General Description
The MAX2320/MAX2321/MAX2322/MAX2324/MAX2326/
MAX2327 high-performance silicon germanium (SiGe)
receiver front-end ICs set a new industry standard for
low noise and high linearity at a low supply current. This
family integrates a variety of unique features such as an
LO frequency doubler and divider, dual low-noise
amplifier (LNA) gain settings, and a low-current paging
mode that extends the handset standby time.
The MAX2320 family includes six ICs: four operate at
both cellular and PCS frequencies, one operates at cel-
lular frequencies, and one at PCS frequencies (see
Selector Guide). Each part includes an LNA with a high
input third-order intercept point (IIP3) to minimize inter-
modulation and cross-modulation in the presence of
large interfering signals. In low-gain mode, the LNA is
bypassed to provide higher cascaded IIP3 at a lower
current. For paging, a low-current, high-gain mode is
provided.
The CDMA mixers in cellular and PCS bands have high
linearity, low noise, and differential IF outputs. The FM
mixer is designed for lower current and a single-ended
output.
All devices come in a 20-pin TSSOP-EP package with
exposed paddle (EP) and are specified for the extend-
ed temperature range (-40°C to +85°C).
Applications
CDMA/TDMA/PDC/WCDMA/GSM Cellular Phones
Single/Dual/Triple-Mode Phones
Wireless Local Loop (WLL)
Features
♦Ultra-High Linearity at Ultra-Low Current and
Noise
♦+2.7V to +3.6V Operation
♦Pin-Selectable Low-Gain Mode Reduces Gain by
17dB and Current by 3mA
♦Pin-Selectable Paging Mode Reduces Current
Draw by 6mA when Transmitter Is Not in Use
♦LO Output Buffers
♦LO Frequency Doubler (MAX2321)
♦LO Frequency Divider (MAX2326)
♦0.1µA Shutdown Current
♦20-Pin TSSOP-EP Package
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
________________________________________________________________ Maxim Integrated Products 1
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
MIXINH
MIXINL
RBIAS
CDMA+LNAINH
RLNA
20 TSSOP-EP
6mm x 6.3mm
LNAOUTL
LNAOUTH
TOP VIEW
CDMA-
BUFFEN
VCC
FMOUTGAIN
LIN
BAND
LNAINL
12
11
9
10
LOLOUT
LOHOUTLOHIN
LOLIN
MAX2320
MAX2321
MAX2326
TSSOP
19-1535; Rev 1; 6/00
PART
MAX2320EUP
MAX2321EUP
MAX2322EUP -40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP. RANGE PIN-PACKAGE
20 TSSOP-EP
20 TSSOP-EP
20 TSSOP-EP
EVALUATION KIT MANUAL
FOLLOWS DATA SHEET
Typical Application Circuits appear at end of data sheet. Pin Configurations continued at end of data sheet.
Pin Configurations
Ordering Information
MAX2324EUP
MAX2326EUP
MAX2327EUP -40°C to +85°C
-40°C to +85°C
-40°C to +85°C 20 TSSOP-EP
20 TSSOP-EP
20 TSSOP-EP
PCS band, single mode with optional frequency
doubler
MAX2322
MAX2320 with LO doubler
Dual-band, dual VCO inputs, and dual IF outputsMAX2320
MAX2321
DESCRIPTIONPART
Selector Guide
Dual-band, dual VCO inputs, and separately
controlled VCO buffers
MAX2327
MAX2320 with LO divider
Cellular band, dual IF outputsMAX2324
MAX2326
For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS—MAX2320/MAX2321/MAX2326
(VCC = +2.7V to +3.6V, RRBIAS = RRLNA = 20kΩ, no RF signals applied, BUFFEN = low, LO buffer outputs connected to VCC through
50Ωresistors, all other RF and IF outputs connected to VCC, TA= -40°C to +85°C, unless otherwise noted. Typical values are at VCC =
+2.75V and TA= +25°C, unless otherwise noted.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
VCC to GND...........................................................-0.3V to +4.3V
Digital Input Voltage to GND......................-0.3V to (VCC + 0.3V)
RF Input Signals ...........................................................1.0V peak
Continuous Power Dissipation (TA= +70°C)
20-Pin TSSOP-EP (derate 80mW/°C above +70°C)........6.4W
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Operating Supply Current
(Note 1) ICC
17.5 21.5
17 21.5
Cellular band MAX2326
MAX2320/1
21 26
17 21.5
PCS band MAX2321
MAX2320/6
Low-gain,
high-linearity
modes
15.5 20
15 19.5
Cellular band MAX2326
MAX2320/1
19 25
15 19.5
PCS band MAX2321
MAX2320/6
High-gain,
low-linearity
paging modes
21 25.5
mA
20 25.3
Cellular band MAX2326
MAX2320/1
24 30.8
20 25.3
PCS band MAX2321
MAX2320/6
High-gain,
high-linearity
modes
PARAMETER SYMBOL MIN TYP MAX UNITS
14 18.5
Shutdown Supply Current ISHDN 0.1 20 µA
Digital Input Logic High VIH 2.0 V
Supply Voltage VCC +2.7 +3.6 V
Digital Input Logic Low VIL 0.6 V
Digital Input Current High IIH 5µA
Digital Input Current Low IIL -35 µA
CONDITIONS
FM mode
(Note 1)
5.5 8.5
Cellular band
MAX2326
5 7.5
PCS band
MAX2320/1/6
LO Buffer Supply Current ILOBUF
5 7.5
mA
Additional current for
BUFFEN = high
Cellular band
MAX2320/1
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
_______________________________________________________________________________________ 3
DC ELECTRICAL CHARACTERISTICS—MAX2322/MAX2324
(VCC = +2.7V to +3.6V, RRBIAS = RRLNA = 20kΩ, no RF signals applied, BUFFEN = low, LO buffer outputs connected to VCC through
50Ωresistors, all other RF and IF outputs connected to VCC, TA= -40°C to +85°C, unless otherwise noted. Typical values are at VCC =
+2.75V and TA= +25°C, unless otherwise noted.)
DC ELECTRICAL CHARACTERISTICS—MAX2327
(VCC = +2.7V to +3.6V, RRBIAS = RRLNA = 20kΩ, no RF signals applied, BUFFEN = low, LO buffer outputs connected to VCC through
50Ωresistors, all other RF and IF outputs connected to VCC, TA= -40°C to +85°C, unless otherwise noted. Typical values are at
VCC = +2.75V and TA= +25°C, unless otherwise noted.)
High-gain,
high-linearity
modes
FM mode (MAX2324 only)
(Note 1)
LOX2 = low
14.5 18.5
CONDITIONS
LOX2 = high
PCS band
(MAX2322)
20 25.3
24 30.8
Cellular band (MAX2324) 20 25.3
µA-35IIL
Digital Input Current Low
µA5IIH
Digital Input Current High
V0.6VIL
Digital Input Logic Low
V+2.7 +3.6VCC
Supply Voltage
V2.0VIH
Digital Input Logic High
µA0.1 20ISHDN
Shutdown Supply Current
UNITSMIN TYP MAXSYMBOLPARAMETER
mA
High-gain,
low-linearity
paging modes
LOX2 = low
LOX2 = high
PCS band
(MAX2322)
15 19.5
19 25
Cellular band (MAX2324) 15 19.5
ICC
Low-gain,
high-linearity
modes
LOX2 = low
LOX2 = high
PCS band
(MAX2322)
17 21.5
21 26
Cellular band (MAX2324) 17 21.5
Operating Supply Current
(Note 1)
Additional current for BUFFEN = high mA5 7.5ILOBUF
LO Buffer Supply Current
MAX2324 only
MAX2324 only, VMODEOUT = 2.4V
MAX2324 only
MAX2324 only
µA-100IOL
Digital Output Current Low
µA30IOH
Digital Output Current High
V0.4VOL
Digital Output Logic Low
V1.7VOH
Digital Output Logic High
FM mode
(Note 1)
14.5 18.5
CONDITIONS
µA-35IIL
Digital Input Current Low
µA5IIH
Digital Input Current High
V0.6VIL
Digital Input Logic Low
V+2.7 +3.6VCC
Supply Voltage
V2.0VIH
Digital Input Logic High
µA0.1 20ISHDN
Shutdown Supply Current
UNITSMIN TYP MAXSYMBOLPARAMETER
15 19.5PCS band
High-gain mode mA
15 19.5
ICC
Operating Supply Current
(Note 1) Cellular band
Additional current for BUFFEN = high mA5 7.5ILOBUF
LO Buffer Supply Current
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
4 _______________________________________________________________________________________
AC ELECTRICAL CHARACTERISTICS—MAX2320/MAX2321/MAX2326
(MAX232_ EV kit, VCC = +2.75V, fLNAINH = fMIXINH = 1960MHz, fLNAINL = fMIXINL = 881MHz, fLOLIN = 1091MHz (digital mode), fLOLIN =
991MHz (FM mode), fLOHIN = 1750MHz (MAX2320, MAX2322 with LOX2 = low, MAX2326 with BAND = low, MAX2327), fLLOHIN =
1085MHz (MAX2321 with BAND = low, MAX2322 with LOX2 = high), fLOHIN = 1091MHz (MAX2321 with BAND = high), fLOHIN =
2182MHz (MAX2326 with BAND = high), LO input power = -7dBm (MAX2320/MAX2326), 50Ωsystem, TA= +25°C, unless otherwise
noted.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN -3σTYP +3σMAX UNITS
Low-Band RF
Frequency Range
(Note 3)
800 1000 MHz
High-Band RF
Frequency Range
(Note 3)
1800 2500 MHz
Low-Band LO
Frequency Range
(Note 3)
700 1150 MHz
High-Band LO
Frequency Range
(Note 3)
1600 2300 MHz
IF Frequency Range
(Note 3) 50 400 MHz
LNA PERFORMANCE
HIGH-GAIN, HIGH-LINEARITY MODES (Note 1)
PCS 13 14.5 16
TA = +25°CCellular 14 15 16
PCS 11.5 14.5 17
Gain (Note 4) G
TA = -40°C to
+85°CCellular 13 15 16.5
dB
PCS ±0.5
Gain Variation Over
Temperature
Relative to +25°C
TA = -40°C to
+85°CCellular ±0.5
dB
PCS 1.8 2 2.1
Noise Figure
(Note 5) NF Cellular 1.3 1.4 1.5 dB
PCS 7 +8
Input Third-Order
Intercept (Notes 5, 6) IIP3 TA = TMIN to TMAX Cellular 6 +8 dBm
PCS -11 -10
Input 1dB Compression POUT
1dB TA = TMIN to TMAX Cellular -11 -10 dBm
HIGH-GAIN, LOW-LINEARITY PAGING MODES AND FM MODE (Note 1)
PCS 13.5
Gain (Note 4) G Cellular 14.5 dB
PCS ±0.5
Gain Variation Over
Temperature
Relative to +25°C
TA = -40°C
to +85°CCellular ±0.5
dB
PCS 1.9 2.1 2.2
Noise Figure
(Note 5) Cellular 1.4 1.5 1.6 dB
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
_______________________________________________________________________________________ 5
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX232_ EV kit, VCC = +2.75V, fLNAINH = fMIXINH = 1960MHz, fLNAINL = fMIXINL = 881MHz, fLOLIN = 1091MHz (digital mode), fLOLIN =
991MHz (FM mode), fLOHIN = 1750MHz (MAX2320, MAX2322 with LOX2 = low, MAX2326 with BAND = low, MAX2327), fLLOHIN =
1085MHz (MAX2321 with BAND = low, MAX2322 with LOX2 = high), fLOHIN = 1091MHz (MAX2321 with BAND = high), fLOHIN =
2182MHz (MAX2326 with BAND = high), LO input power = -7dBm (MAX2320/MAX2326), 50Ωsystem, TA= +25°C, unless otherwise
noted.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN -3σTYP +3σMAX UNITS
PCS +6.5
Input Third-Order
Intercept (Notes 5, 6) Cellular +6 dBm
LOW-GAIN, HIGH-LINEARITY MODES (Note 1)
PCS -2
Gain (Note 4) G Cellular -1.5 dB
PCS 0.5
Gain Variation Over
Temperature
Relative to +25°C
TA = -40°C to
+85°CCellular 0.5
dB
PCS 5 5.5 6
Noise Figure (Note 5) NF Cellular 4 4.25 4.5 dB
PCS +10.5 +11.5 +12.5
Input Third-Order
Intercept (Notes 5, 6) IIP3 Cellular +11.5 +12.5 +13.5 dBm
MIXER PERFORMANCE
HIGH-GAIN, HIGH-LINEARITY, AND LOW-GAIN MODES (Note 1)
Without doubler 11 11.8 12.5 13.2 14
TA = +25°C, PCS With doubler 10.5 11.1 12 12.9 13.5
Without doubler 10 10.8 12.5 14.3 15.3
TA = -40°C to
+85°C, PCS With doubler 9.6 10.4 12 13.1 14.3
TA = +25°C, cellular 12 127 13.4 14.0 14.7
Gain (Note 4) G
TA = -40°C to +85°C, cellular 11.3 11.9 13.4 15.5 16.5
dB
PCS ±1
Gain Variation Over
Temperature Relative to
+25°C (Note 5)
TA = -40°C to
+85°CCellular ±1
dB
Without doubler 7.5 7.8 8
PCS With doubler 11 12.3 13.5
Without divider 7.5 8.1 8.5
Noise Figure NF
Cellular With divider 7.8 8.4 8.8
dB
Without doubler 1.8 2.4 +4
PCS,
TA = TMIN to TMAX With doubler 1.4 2.8 +4.7
Input Third-Order
Intercept (Notes 5, 6) IIP3
Cellular,
TA = TMIN to TMAX 1 1.8 3.2
dBm
PCS -11 -10
Input dB Compression Cellular TA = TMIN to TMAX -12 -10.7 dBm
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
6 _______________________________________________________________________________________
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX232_ EV kit, VCC = +2.75V, fLNAINH = fMIXINH = 1960MHz, fLNAINL = fMIXINL = 881MHz, fLOLIN = 1091MHz (digital mode), fLOLIN =
991MHz (FM mode), fLOHIN = 1750MHz (MAX2320, MAX2322 with LOX2 = low, MAX2326 with BAND = low, MAX2327), fLLOHIN =
1085MHz (MAX2321 with BAND = low, MAX2322 with LOX2 = high), fLOHIN = 1091MHz (MAX2321 with BAND = high), fLOHIN =
2182MHz (MAX2326 with BAND = high), LO input power = -7dBm (MAX2320/MAX2326), 50Ωsystem, TA= +25°C, unless otherwise
noted.) (Note 2)
Note 1: See Tables 1–5 for operational mode selection.
Note 2: A total of 36 devices from 3 different wafer lots are used to determine the standard deviation. The lots were selected to rep-
resent worst-case process conditions.
Note 3: Operation is characterized for the frequencies specified in the conditions; for other frequencies in the band, see Tables 8–12
for LNA and mixer S parameters.
Note 4: Guaranteed by design, characterization, and production functional test.
Note 5: Guaranteed by design and characterization.
Note 6: For cellular band, RF inputs are -25dBm each tone at 881MHz and 882MHz, fLO = 1091MHz. For PCS band, RF inputs are
-25dBm each tone at 1960MHz and 1961MHz, fLO = 2170MHz. For IIP3 vs. ICC trade-off, see Typical Operating
Characteristics.
PARAMETER SYMBOL CONDITIONS MIN -3σTYP +3σMAX UNITS
HIGH-GAIN, LOW-LINEARITY, AND LOW-GAIN MODES (Note 1)
Without doubler 10.6 11.3 12 12.1 12.8
PCS With doubler 10.2 10.8 11.5 12.4 13.1
Gain (Note 4) G
Cellular Band 11.2 12.1 13 13.8 14.7
dB
PCS ±1±1
Gain Variation Over
Temperature Relative
to +25°C
TA = -40°C to
+85°CCellular ±1±1
dB
Without doubler 7.2 7.5 7.6
PCS With doubler
(Note 7) 10.5 12 13.4
Without divider 7 7.2 7.6
Noise Figure NF
Cellular With divider 7.5 7.7 8.1
dB
Without doubler +1
PCS With doubler +2.2
Input Third-Order
Intercept IIP3
Cellular +1.0
dBm
FM MODE (Note 1)
TA = +25°C 9.7 10.4 11.2 11.9 12.7
Gain (Note 4) G TA = -40°C to +85°C 7.8 9.0 11.2 14.0 15.4 dB
Noise Figure NF 10.6 11.1 11.5 dB
Input Third-Order
Intercept (Notes 5, 6) IIP3 TA = -40°C to +85°C 2.3 3.2 4.9 dBm
LO BUFFER PERFORMANCE (BUFFEN = HIGH)
Load = 100Ω pullup resistor -12
LO Output Level BUFFEN = GND -44 dBm
LO_OUT Even Harmonic
Distortion -31 dBc
LO Emissions at LNA
Input Port Interstage filter rejection = 20dB -50 dBm
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
_______________________________________________________________________________________ 7
Typical Operating Characteristics
(MAX232_ EV kit, VCC = +2.75V, fLNAINH = fMIXINH = 1960MHz, fLNAINL = fMIXINL = 881MHz, fLOHIN = 1750MHz, fLOLIN = 1091MHz
(digital modes), fLOLIN = 991MHz (FM mode), LO input power = -7dBm, 50Ωsystem, all measurements include matching component
losses but not connector and trace losses, TA = +25°C, unless otherwise noted.)
0
5
15
10
20
25
PCS-BAND SUPPLY CURRENT
vs. TEMPERATURE
MAX2320 toc01
TEMPERATURE (°C)
SUPPLY CURRENT (mA)
-50 500 100
HGHL
LGHL
HGLL
0
5
15
10
20
25
CELLULAR-BAND SUPPLY CURRENT
vs. TEMPERATURE
MAX2320 toc02
TEMPERATURE (°C)
SUPPLY CURRENT (mA)
-50 500 100
HGHL
LGHL
HGLL
CELLULAR-BAND LNA S11
MAX2320 toc03
LGHL
HGLL, FM
HGHL
CELLULAR-BAND LNA S22
MAX2320 toc04
LGHL
HGLL, FM
HGHL
PCS-BAND LNA S11
MAX2320 toc05
LGHL
HGLL
HGHL
PCS-BAND LNA S22
MAX2320 toc06
LGHL
HGLL
HGHL
PCS-BAND MIXER S11
MAX2320 toc07
ALL MODES
CELLULAR-BAND MIXER S11
MAX2320 toc08
ALL MODES
0
40
20
100
80
60
140
120
160
0.50
0.40
0.30
0.70
0.60
0.80
0 150 20050 100 250 300 350 400 450
DIGITAL MIXER DIFFERENTIAL IF
PORT IMPEDANCE
MAX2320 toc09
FREQUENCY (MHz)
PARALLEL RESISTANCE (kΩ)
PARALLEL CAPACITANCE (pF)
CAPACITANCE
RESISTANCE
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
8 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(MAX232_ EV kit, VCC = +2.75V, fLNAINH = fMIXINH = 1960MHz, fLNAINL = fMIXINL = 881MHz, fLOHIN = 1750MHz, fLOLIN = 1091MHz
(digital modes), fLOLIN = 991MHz (FM mode), LO input power = -7dBm, 50Ωsystem, all measurements include matching component
losses but not connector and trace losses, TA = +25°C, unless otherwise noted.)
10
12
11
14
13
16
15
17
48106 121416
CELLULAR-BAND HGHL LNA GAIN
vs. CURRENT
LNA CURRENT (mA)
GAIN (dB)
MAX2320toc11
TA = -40°C
TA = +25°C
TA = +85°C
-2
2
0
8
6
4
14
12
10
16
870 890850 910
CELLULAR-BAND LNA GAIN
vs. FREQUENCY
MAX2320toc14
FREQUENCY (MHz)
GAIN (dB)
LGHL
HGHL
HGHL, FM
10
12
11
14
13
16
15
17
4914
PCS-BAND HGHL LNA GAIN
vs. CURRENT
MAX2320toc12
LNA CURRENT (mA)
GAIN (dB)
TA = -40°C
TA = +25°C
TA = +85°C
0
40
30
20
10
70
60
50
90
80
100
0.7
0.6
0.5
0.9
0.8
1.0
0 150 20050 100 250 300 350 400 450
FM MIXER IF
PORT IMPEDANCE
MAX2320 toc10
FREQUENCY (MHz)
PARALLEL RESISTANCE (kΩ)
PARALLEL CAPACITANCE (pF)
CAPACITANCE
RESISTANCE
-3
1
-1
9
7
5
3
13
11
15
1900 1950 2000
PCS-BAND LNA GAIN vs. FREQUENCY
FREQUENCY (MHz)
GAIN (dB)
MAX2320toc15
HGLL, FM
LGHL
HGHL
10
18
700 800 1000
CELLULAR-BAND HGHL LNA
MAXIMUM AVAILABLE GAIN
MAX2320 TOC16
FREQUENCY (MHz)
MAXIMUM AVAILABLE GAIN (dB)
11
12
13
14
15
16
17
900750 850 950
12
18
1700 1900 2500
PCS-BAND HGHL LNA
MAXIMUM AVAILABLE GAIN
MAX2320 TOC17
FREQUENCY (MHz)
MAXIMUM AVAILABLE GAIN (dB)
13
14
15
16
17
2100 23001800 24002000 2200
0
3
2
1
4
5
6
7
8
9
10
05 1510 20
CELLULAR-BAND HGHL LNA IIP3
vs. CURRENT
LNA CURRENT (mA)
IIP3 (dBm)
MAX2320toc18
TA = +85°C
TA = +25°C
TA = -40°C
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
_______________________________________________________________________________________ 9
Typical Operating Characteristics (continued)
(MAX232_ EV kit, VCC = +2.75V, fLNAINH = fMIXINH = 1960MHz, fLNAINL = fMIXINL = 881MHz, fLOHIN = 1750MHz, fLOLIN = 1091MHz
(digital modes), fLOLIN = 991MHz (FM mode), LO input power = -7dBm, 50Ωsystem, all measurements include matching component
losses but not connector and trace losses, TA = +25°C, unless otherwise noted.)
-4
0
-2
6
4
2
12
10
8
14
48106 12141618
CELLULAR-BAND HGHL LNA IIP3
vs. CURRENT
MAX2320toc19
LNA CURRENT (mA)
IIP3 (dBm)
VCC = 3.6V
VCC = 3V
VCC = 2.7V
-6
-2
-4
2
0
8
6
4
10
486 1012141618
PCS-BAND HGHL LNA IIP3
vs. CURRENT
MAX2320toc20
LNA CURRENT (mA)
IIP3 (dBm)
TA = -40°C
TA = +85°C
TA = +25°C
-4
0
-2
4
2
10
8
6
12
486 1012141618
PCS-BAND HGHL LNA IIP3
vs. CURRENT
MAX2320toc21
LNA CURRENT (mA)
IIP3 (dBm)
VCC = 3.6V
VCC = 3V
VCC = 2.7V
10.0
11.0
10.5
13.0
12.5
12.0
11.5
14.0
14.5
13.5
15.0
61116
CELLULAR-BAND HGHL MIXER
CONVERSION GAIN vs. CURRENT
MIXER CURRENT (mA)
CONVERSION GAIN (dB)
MAX2320toc27
TA = -40°C, HIGH SIDE LO
TA = -40°C, LOW SIDE LO
TA = +25°C, HIGH SIDE LO
TA = +25°C, LOW SIDE LO
TA = +85°C, HIGH SIDE LO
TA = +85°C, LOW SIDE LO
0
4
2
8
6
12
10
14
-40 -30 -20 -10
PCS-BAND HGHL LNA IIP3
vs. CURRENT
MAX2320 toc22
LNA CURRENT (mA)
IIP3 (dBm)
LGHL
HGHL
HGLL
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
850 860 880870 890 910900
CELLULAR-BAND HGHL LNA
NOISE FIGURE vs. FREQUENCY
MAX2320toc23
FREQUENCY (MHz)
NOISE FIGURE (dB)
11.2mA
9mA
7mA
5.6mA
1.10
1.20
1.15
1.30
1.25
1.40
1.35
1.45
850 870 880860 890 900 910
CELLULAR-BAND HGLL LNA
NOISE FIGURE vs. FREQUENCY
FREQUENCY (MHz)
NOISE FIGURE (dB)
MAX2320toc24
1.4
1.6
1.5
1.8
1.7
1.9
2.0
1920 19601940 1980 2000 2020
PCS-BAND HGHL NOISE FIGURE
vs. FREQUENCY
MAX2320 toc25
FREQUENCY (MHz)
NOISE FIGURE (dB)
5.6mA
11.2mA
7mA
1.45
1.60
1.55
1.50
1.65
1.70
1.75
1.80
1.85
1.90
1.95
1920 1940 1960 1980 20202000
PCS-BAND HGLL LNA NOISE FIGURE
vs. FREQUENCY
MAX2320toc26
FREQUENCY (MHz)
NOISE FIGURE (dB)
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
10 ______________________________________________________________________________________
Typical Operating Characteristics (continued)
(MAX232_ EV kit, VCC = +2.75V, fLNAINH = fMIXINH = 1960MHz, fLNAINL = fMIXINL = 881MHz, fLOHIN = 1750MHz, fLOLIN = 1091MHz
(digital modes), fLOLIN = 991MHz (FM mode), LO input power = -7dBm, 50Ωsystem, all measurements include matching component
losses but not connector and trace losses, TA = +25°C, unless otherwise noted.)
11.0
12.0
11.5
13.0
12.5
13.5
14.0
61116
CELLULAR-BAND HGHL MIXER
CONVERSION GAIN vs. CURRENT
MAX2320 toc28
MIXER CURRENT (mA)
CONVERSION GAIN (dB)
VCC = +3.6V, HIGH SIDE LO
VCC = +3.0V, HIGH SIDE LO
VCC = +2.7V,
HIGH SIDE LO
VCC = +2.7V, LOW SIDE LO
VCC = +3.6V, LOW SIDE LO
VCC = +3.0V,
LOW SIDE LO
6
8
7
11
10
9
13
14
12
15
61116
PCS-BAND HGHL MIXER
CONVERSION GAIN vs. CURRENT
MIXER CURRENT (mA)
CONVERSION GAIN (dB)
MAX2320toc29
TA = -45°C, HIGH SIDE LO
TA = +25°C, HIGH SIDE LO
TA = +85°C, LOW SIDE LO
TA = +25°C, LOW SIDE LO
TA = +85°C, HIGH SIDE LO
TA = -45°C, LOW SIDE LO
11.0
12.0
11.5
13.0
12.5
13.5
14.0
61116
PCS-BAND HGHL MIXER
CONVERSION GAIN vs. CURRENT
MAX2320 toc30
MIXER CURRENT (mA)
CONVERSION GAIN (dB)
VCC = +3.6V TO +2.7V
HIGH AND LOW
SIDE LO
6
7
8
9
10
11
12
13
14
-20 -15 -10 -5 50
CELLULAR-BAND MIXER CONVERSION
GAIN vs. LO INPUT LEVEL
MAX2320toc31
LO INPUT LEVEL (dBm)
CONVERSION GAIN (dB)
HGLL, LOW SIDE LO
HGLL, HIGH SIDE LO
FM, HIGH SIDE LO
FM, LOW SIDE LO
HGHL, LOW SIDE LO
HGHL, HIGH SIDE LO
9.0
9.5
10.0
10.5
11.0
11.5
12.0
12.5
13.0
-19 -14 -9 -4 1
PCS-BAND HGHL MIXER CONVERSION
GAIN vs. LO INPUT LEVEL
MAX2320toc32
LO INPUT LEVEL (dBm)
CONVERSION GAIN (dB)
HGLL, LOW SIDE LO
HGLL, HIGH SIDE LO
HGHL, LOW SIDE LO
HGHL, HIGH SIDE LO
6
0
4
2
8
6
12
10
14
700 800 900 1000
CELLULAR-BAND
HGHL MIXER CONVERSION
GAIN vs. INPUT FREQUENCY
MAX2320 toc33
RF INPUT FREQUENCY (MHz)
CONVERSION GAIN (dB)
0
4
2
8
6
12
10
14
1700 2100 23001900 2500
PCS-BAND HGHL MIXER CONVERSION
GAIN vs. RF INPUT FREQUENCY
MAX2320 toc34
RF INPUT FREQUENCY (MHz)
CONVERSION GAIN (dB)
-4
0
-2
4
2
6
8
61116
CELLULAR-BAND HGHL
MIXER IIP3 vs. CURRENT
MAX2320 toc35
MIXER CURRENT (mA)
IIP3 (dBm)
TA = -40°C, HIGH SIDE LO
TA = -40°C, LOW SIDE LO
TA = +25°C,
LOW SIDE LO
TA = +25°C,
HIGH SIDE LO
TA = +85°C,
HIGH SIDE LO
TA = +85°C, LOW SIDE LO
-2
-1
0
1
2
3
4
5
6
61116
CELLULAR-BAND HGHL
MIXER IIP3 vs. CURRENT
MAX2320 toc36
MIXER CURRENT (mA)
IIP (dBm)
HIGH SIDE/LOW SIDE LO
V
CC
= 2.7V TO 3.6V
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
______________________________________________________________________________________ 11
Typical Operating Characteristics (continued)
(MAX232_ EV kit, VCC = +2.75V, fLNAINH = fMIXINH = 1960MHz, fLNAINL = fMIXINL = 881MHz, fLOHIN = 1750MHz, fLOLIN = 1091MHz
(digital modes), fLOLIN = 991MHz (FM mode), LO input power = -7dBm, 50Ωsystem, all measurements include matching component
losses but not connector and trace losses, TA = +25°C, unless otherwise noted.)
-5
-2
-3
-4
-1
0
1
2
3
4
5
-35 -30 -25 -20 -10-15
CELLULAR-BAND MIXER IIP3
vs. RF INPUT LEVEL
MAX2320toc37
RF INPUT LEVEL PER TONE (dBm)
IIP3 (dBm)
LOW SIDE LO, HGHL
HIGH SIDE LO, HGLL
HIGH SIDE LO, HGHL
HIGH SIDE LO, LGHLLOW SIDE LO, LGHL
LOW SIDE LO, HGLL
0
2
1
4
3
5
6
-18 -6 -2-14 -10 2 6 10
CELLULAR-BAND MIXER IIP3
vs. LO INPUT LEVEL
MAX2320 toc38
LO INPUT LEVEL (dBm)
IIP3 (dBm)
HIGH SIDE LO, FM
LOW SIDE LO, FM
HIGH SIDE LO, HGHL AND LGHL
LOW SIDE LO,
HGHL AND LGHL
HIGH SIDE LO, HGLL LOW SIDE LO, HGLL
-4
0
-2
4
2
8
6
10
61116
PCS-BAND HGHL MIXER IIP3
vs. CURRENT
MAX2320 toc39
MIXER CURRENT (mA)
IIP3 (dBm)
TA = +25°C,
HIGH SIDE LO
TA = +85°C, HIGH SIDE LO
TA = -40°C, HIGH SIDE LO
TA = -40°C, LOW SIDE LO
TA = +25°C, LOW SIDE LO
TA = +85°C, LOW SIDE LO
0
4
2
10
8
6
14
12
16
-17 -7-12 -2 3
CELLULAR-BAND FM MIXER
NOISE FIGURE vs. LO INPUT LEVEL
LO INPUT LEVEL (dBm)
NOISE FIGURE (dB)
MAX2320toc45
LO SIDE LO
HIGH SIDE LO
-4
0
-2
4
2
6
8
61116
PCS-BAND HGHL MIXER IIP3
vs. CURRENT
MAX2320 toc40
MIXER CURRENT (mA)
IIP3 (dBm)
HIGH SIDE LO, 3V
LOW SIDE LO, 3V
HIGH SIDE LO, 3.6V
LOW SIDE LO, 3.6V
HIGH SIDE LO, 2.7V
LOW SIDE LO, 2.7V
-4
-2
-3
-1
0
1
2
3
4
5
6
7
8
-35 -30 -25 -20 -15 -10
PCS-BAND MIXER IIP3
vs. RF INPUT LEVEL
MAX2320 toc41
RF INPUT LEVEL PER TONE (dBm)
IIP3 (dB)
HIGH SIDE LO, HGHL, HIGH SIDE LO, LGHL
LOW SIDE LO, LGHL
LOW SIDE LO, HGHL
HIGH SIDE LO, HGLL
LOW SIDE LO, HGLL
0
2
1
4
3
7
6
5
8
-18 -10-14 -6 -2 2 6 10
PCS-BAND MIXER IIP3
vs. LO INPUT LEVEL
MAX2320toc42
LO INPUT LEVEL (dBm)
IIP3 (dBm)
LOW SIDE LO, HGHL
LOW SIDE LO, LGHL
LOW SIDE LO, HGLL
HIGH SIDE LO, LGHL
HIGH SIDE LO, HGHL
HIGH SIDE LO, HGLL
0
4
2
8
6
12
10
14
-17 -7 -2-12 3
CELLULAR-BAND HGHL MIXER NOISE
FIGURE vs. LO INPUT LEVEL
MAX2320 toc43
LO INPUT LEVEL (dBm)
NOISE FIGURE (dB)
HIGH SIDE LO
LOW SIDE LO
0
4
2
8
6
12
10
14
-17 -7 -2-12 3
CELLULAR-BAND HGLL MIXER NOISE
FIGURE vs. LO INPUT LEVEL
MAX2320 toc44
LO INPUT LEVEL (dBm)
NOISE FIGURE (dB)
HIGH SIDE LO
LOW SIDE LO
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
12 ______________________________________________________________________________________
0
4
2
8
6
12
10
14
-17 -7 -2-12 3
PCS-BAND HGHL MIXER NOISE
FIGURE vs. LO INPUT LEVEL
MAX2320 toc46
LO INPUT LEVEL (dBm)
NOISE FIGURE (dB)
HIGH SIDE LO
LOW SIDE LO
0
4
2
8
6
12
10
14
-17 -7 -2-12 3
PCS-BAND HGLL MIXER NOISE
FIGURE vs. LO INPUT LEVEL
MAX2320 toc47
LO INPUT LEVEL (dBm)
NOISE FIGURE (dB)
HIGH SIDE LO
LOW SIDE LO
-25
-20
-10
-15
-5
0
CELLULAR-BAND LO BUFFER
OUTPUT LEVEL vs. INPUT LEVEL
MAX2320 toc48
LO INPUT LEVEL (dBm)
OUTPUT LEVEL (dBm)
-20 0-10 10
TA = -45°C TO +85°C HIGH SIDE
AND LOW SIDE LO
Typical Operating Characteristics (continued)
(MAX232_ EV kit, VCC = +2.75V, fLNAINH = fMIXINH = 1960MHz, fLNAINL = fMIXINL = 881MHz, fLOHIN = 1750MHz, fLOLIN = 1091MHz
(digital modes), fLOLIN = 991MHz (FM mode), LO input power = -7dBm, 50Ωsystem, all measurements include matching component
losses but not connector and trace losses, TA = +25°C, unless otherwise noted.)
-70
-50
-60
-30
-40
-10
-20
0
-20 -10 0 10
CELLULAR-BAND 2ND AND 3RD
HARMONICS vs. LO INPUT POWER
MAX2320 toc49
LO INPUT LEVEL (dB)
HARMONIC POWER (dBm)
2ND HARMONIC
3RD HARMONIC
f
LO
= 1091MHz
-25
-20
-10
-15
-5
0
PCS-BAND LO BUFFER
OUTPUT LEVEL vs. INPUT LEVEL
MAX2320 toc50
LO INPUT LEVEL (dBm)
OUTPUT LEVEL (dBm)
-20 0-10 10
TA = -45°C TO +85°C
HIGH SIDE AND LOW
SIDE LO
-70
-50
-60
-30
-40
-10
-20
0
-20 -10 0 10
PCS-BAND 2ND AND 3RD HARMONICS
LO BUFFER OUTPUT vs. INPUT LEVEL
MAX2320 toc51
LO INPUT LEVEL (dB)
HARMONIC POWER (dBm)
2ND HARMONIC
3RD HARMONIC
f
LO
= 1750MHz
-75
-69
-71
-73
-67
-65
-63
-61
-59
-57
-55
80 90 100 110 120
PCS-BAND MIXER
2 x 2 SPURIOUS REJECTION
MAX2320toc52
IF OUTPUT FREQUENCY (MHz)
2 x 2 SPURIOUS OUTPUT (dBc)
HGLL, WITHOUT LO DOUBLER
HGHL, WITHOUT LO DOUBLER
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
______________________________________________________________________________________ 13
Pin Description
PIN
1 1—
— 22
3 —3
LNA Bias-Setting Resistor Connection. For nominal bias,
connect a 20kΩresistor to ground. The resistor value
controls the LNA’s linearity in high-gain, high-linearity
modes.
RLNA3
Low-Band LNA Output. Connect a pull-up inductor to
VCC and an external series capacitor as part of the
matching network.
LNAOUTL2
High-Band LNA Output. Connect a pull-up inductor to
VCC and an external series capacitor as part of the
matching network.
LNAOUTH1
4 4—
— —4 Logic Output. Indicates mode of operation. VMODEOUT =
high in FM mode.
MODEOUT—
— 55
6 76 Shutdown Logic Input. See Detailed Description for con-
trol modes.
SHDN
—
Low-Band RF Input. Requires a blocking capacitor and a
matching network. The capacitor may be used as part of
the matching network.
LNAINL5
High-Band RF Input. Requires a blocking capacitor and
a matching network. The capacitor may be used as part
of the matching network.
LNAINH4
— 6—
7 —7 Linearity-Select Logic Input. See Detailed Description for
control modes.
LIN7
8 —8
— 99 Low-Frequency LO Input. Used in FM mode on all parts
and in cellular digital mode for MAX2320/MAX2324.
LOLIN9
Gain-Select Logic Input. See Detailed Description for
control modes.
GAIN8
Band-Select Logic Input. See Detailed Description for
control modes.
BAND
6
10 10—
High-Frequency LO Input. For MAX2321, used in cellular
digital mode and in PCS mode with the doubler active.
For MAX2320/MAX2327, used in PCS mode without the
doubler. For MAX2322, used with or without the doubler.
For MAX2326, used in PCS mode and cellular digital
mode with the divide-by-two.
LOHIN10
MAX2320
MAX2321
MAX2326
MAX2322 NAME
MAX2324 MAX2327 FUNCTION
— 8— Cellular-Band Mode Select Logic Input. See Detailed
Description for control modes.
MODE—
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
14 ______________________________________________________________________________________
PIN
Pin Description (continued)
MAX2320
MAX2321
MAX2326
MAX2322 NAME FUNCTION
MAX2324 MAX2327
11 11—
High-Frequency LO Buffer Output. Open-collec-
tor output requires pull-up inductor or pull-up
resistor of 100Ωor less. Reactive match to the
load delivers maximum power.
LOHOUT11
—1212
—1313
FM Mixer Output. Requires a pull-up inductor to
VCC and a series capacitor as part of the match-
ing network.
FMOUT13
Low-Frequency LO Buffer Output. Open-collec-
tor output requires pull-up inductor or pull-up
resistor of 100Ωor less. Reactive match to the
load delivers maximum power.
LOLOUT12
13 ——
14 1414 Power Supply. Bypass with a 1000pF capacitor
as close to the pin as possible.
VCC
14
15 1515
16, 17 —16, 17
CDMA Mixer Differential Outputs. Require pull-
up inductors and series capacitors as part of the
matching network.
CDMA-,
CDMA+
16, 17
LO Output Buffer Enable. The LO buffers are
controlled separately from the rest of the IC. Drive
BUFFEN high to power up the LO output buffer
associated with the selected LO input port.
BUFFEN15
LO Doubler Logic Input. Drive LOX2 high to
enable the LO doubler.
LOX2—
18 1818
—1919
Low-Band Mixer Input. Requires a blocking
capacitor and a matching network. The capaci-
tor may be used as part of the matching net-
work.
MIXINL19
20 20—
2, 5, 9, 12,
19 31, 10, 11, 20 No Connection. Do not make any connection to
these pins.
N.C.—
High-Band Mixer Input. Requires a blocking
capacitor and a matching network. The capaci-
tor may be used as part of the matching net-
work.
MIXINH20
Bias-Setting Resistor Connection. For nominal
bias, connect 20kΩresistor to ground. The resis-
tor value controls the digital LNA’s linearity in
low-gain, digital, or FM mode, and controls the
mixers in all modes.
RBIAS18
Slug SlugSlug
Ground Reference for RF, DC, and Logic Inputs.
Solder the slug evenly to the board ground
plane.
GNDSlug
—16, 17—
Mixer Differential Outputs. Require pull-up
inductors and series capacitors as part of the
matching network.
IFOUT+,
IFOUT-
—
PIN
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
______________________________________________________________________________________ 15
Detailed Description
Low-Noise Amplifier
Within its operating bands, each device in the
MAX2320 family (except the MAX2327) has three
modes of LNA operation: high gain, high linearity
(HGHL); high gain, low linearity (HGLL); and low gain,
high linearity (LGHL). The logic inputs control the LNA
mode as described in the AC Electrical Characteristics.
Use HGHL mode when extra-high LNA linearity is
required for cross-modulation suppression. Use HGLL
mode when the transmitter is off and cross-modulation
is not a concern. When the LNA changes modes, the
input VSWR change is minimal. Use LGHL mode for
receiving large signals and when high sensitivity is not
required. The MAX2327 LNA has only an HGLL mode.
Adjust the HGHL mode LNA linearity by changing
RRLNA, and adjust linearity of the other modes by
changing RRBIAS.
Downconverter
The downconverters in these devices are double-bal-
anced mixers. The PCS-band mixer and digital cellular-
band mixer share the same IF output ports. The cellular
band FM mixer has its own IF output to feed a different
filter. Adjust the downconverter linearity and current by
changing RRBIAS (see Typical Operating Character-
istics). When the linearity requirement is high, the mode
control inputs increase the current in the downconvert-
er. When the linearity requirement is not high, the cur-
rent is lower.
LO Output Buffers
The BUFFEN logic input turns the open-collector LO
output buffers on and off. This feature saves current if
the buffers are not required.
Operational Modes
Each device has logic input pins that control the differ-
ent operational modes listed in Tables 1–5.
MAX2320/MAX2321/MAX2326 Operation
The MAX2320/MAX2321/MAX2326 are dual-band, triple-
mode receivers that amplify and downconvert cellular-
and PCS-band signals. They consist of cellular and PCS
LNAs; cellular digital, cellular FM, and PCS digital mix-
ers; and cellular and PCS LO buffers. The MAX2321 has
an LO frequency doubler on-chip, so a single cellular-
band VCO can be used for both the cellular- and PCS-
band mixers. Selecting the PCS path activates the LO
frequency doubler. The MAX2326 has an LO divide-by-
two circuit, so a single PCS-band VCO can be used for
both the cellular and PCS mixers. Selecting the cellular
path activates the LO divide-by-two circuit. Three logic
input pins—BAND, GAIN, and LIN—control eight opera-
tional modes of the LNAs and mixers. The modes are
summarized in Table 1.
Table 1. MAX2320/MAX2321/MAX2326 Operational Modes
Note: L = Logic Low; H = Logic High
BAND
Shutdown. The entire part is shut down except for the LO buffer, which is con-
trolled by BUFFEN. L
DESCRIPTION GAIN
L
LIN
L
Low-Gain, High-Linearity (LGHL) PCS Mode. The PCS LNA and mixer are in
LGHL mode. L L H
High-Gain, Low-Linearity (HGLL) PCS Mode. The LNA and mixer are in HGLL
mode. L H L
High-Gain, High-Linearity (HGHL) PCS Mode. The LNA and mixer are in
HGHL mode. L H H
High-Gain, Low-Linearity (HGLL) Cellular FM Mode. The cellular LNA is in
HGLL mode. The FM mixer and associated LO buffer are selected. H L L
Low-Gain, High-Linearity (LGHL) Cellular Digital Mode. The cellular LNA and
mixer are in LGHL mode. H L H
High-Gain, Low-Linearity (HGLL) Cellular Digital Mode. The cellular LNA and
mixer are in HGLL mode. H H L
High-Gain, High-Linearity (HGHL ) Cellular Digital Mode. The cellular LNA
and mixer are in HGHL mode. H H H
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
16 ______________________________________________________________________________________
MAX2322 Operation
The MAX2322 is a lower-cost PCS-only version that can
be installed as a drop-in replacement for the dual-band
versions. It consists of a PCS LNA, PCS mixer, pin-
selectable LO frequency doubler, and LO buffer. Logic
input SHDN = VCC / GND turns on/off the entire IC
except the LO buffer. The LOX2 logic input controls the
LO frequency doubler. LOX2 = GND disables the dou-
bler when using a PCS band VCO, and LOX2 = VCC
activates the doubler when using a cellular-band VCO.
GAIN and LIN logic inputs control the MAX2322’s three
operational modes, as summarized in Table 2.
MAX2324 Operation
The MAX2324 is a lower-cost cellular-only version that
can be installed as a drop-in replacement for the dual-
band versions. It consists of a cellular LNA, cellular dig-
ital mixer, cellular FM mixer, and LO buffer. A SHDN
logic input turns on/off the entire IC except the LO
buffer. GAIN and LIN logic inputs control the
MAX2324’s three operational modes, as summarized in
Table 3.
MAX2327 Operation
The MAX2327 is similar to the MAX2320 except it only
features an HGLL mode, and either LO output buffer is
selectable during shutdown. It consists of PCS and cel-
lular LNAs; PCS, cellular digital, and cellular FM mixers;
and PCS and cellular LO buffers. A SHDN logic input
turns on/off the entire IC except the LO buffer. BAND
and MODE logic inputs control the MAX2327’s three
operational modes, as summarized in Table 4.
Applications Information
Cascaded LNA/Mixer Performance
The LNA and mixer design aims at optimizing cascad-
ed performance in all gain and linearity modes. In high-
gain, high-linearity mode, both the LNA and mixer have
a low noise figure, high gain, and high linearity. The
LNA has high gain to minimize the noise contribution of
the mixer, thus increasing the receiver’s sensitivity and
extra-high linearity for superior cross-modulation sup-
pression. The HGLL mode is used when the transmitter
is off and cross-modulation is not a concern. In low-
gain, high-linearity mode, the received signal is strong
enough that linearity is the primary concern. The LNA
gain is reduced for higher system linearity. Tables 5
and 6 summarize the cascaded performance.
S Parameters
The S parameters are listed in Tables 7–11. An electron-
ic copy is also available at www.maxim-ic.com
/MAX2320/S_table/.
Table 2. MAX2322 Operational Modes
Table 4. MAX2327 Operational Modes
OPERATIONAL MODE
Not used.
Digital PCS Mode. The LNA and mixer
are in HGLL mode.
FM Mode. The cellular FM mixer is
selected.
Digital Cellular Mode. The cellular digi-
tal mixer is selected.
BAND
L
L
H
H
MODE
L
H
L
H
OPERATIONAL MODE
FM Mode. The LNA is in HGLL mode.
The FM mixer and the associated LO
buffer are selected.
Low-Gain, High-Linearity (LGHL)
Cellular Mode. The LNA and digital
mixer are in LGHL mode.
High-Gain, Low-Linearity (HGLL )
Cellular Mode. The LNA and digital
mixer are in HGLL mode.
High-Gain, High-Linearity (HGHL )
Cellular Mode. The LNA and digital
mixer are in HGHL mode.
GAIN
L
L
H
H
LIN
L
H
L
H
OPERATIONAL MODE
Not used.
Low-Gain, High-Linearity (LGHL) PCS
Mode. The LNA and mixer are in LGHL
mode.
High-Gain, Low-Linearity (HGLL) PCS
Mode. The LNA and mixer are in HGLL
mode.
High-Gain, High-Linearity (HGHL) PCS
Mode. The LNA and mixer are in HGHL
mode.
GAIN
L
L
H
H
LIN
L
H
L
H
Note: L = Logic Low; H = Logic High
Note: L = Logic Low; H = Logic High
Note: L = Logic Low; H = Logic High
Table 3. MAX2324 Operational Modes
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
______________________________________________________________________________________ 17
Layout Considerations
Keep RF signal lines as short as possible to minimize
losses and radiation. Use high-Q components for the LNA
input matching circuit to achieve the lowest possible
noise figure. At the digital mixer outputs, keep the differ-
ential signal lines together and of equal length to ensure
signal balance. For best gain and noise performance, sol-
der the slug evenly to the board ground plane.
Table 5. Typical Cascaded Performance of Cellular-Band Receiver with 3dB Interstage
Filter Loss
Table 6. Typical Cascaded Performance of PCS-Band Receiver with 3dB Interstage
Filter Loss
PARAMETER
Conversion Power Gain
Noise Figure
Third-Order Input Intercept
HIGH GAIN,
HIGH LINEARITY
25.4dB
2.1dB
-8.9dBm
HIGH GAIN,
LOW LINEARITY
24.5dB
2.3dB
-10.6dBm
LOW GAIN,
HIGH LINEARITY
8.9dB
11.8dB
-6.8dBm
FM
22.7dB
3.3dB
-6.8dBm
-9.3dBm-7.6dBm 7.1dBmThird-Order Input Intercept
3.0dB2.6dB 12.4dBNoise Figure
PARAMETER
22.5dB
HIGH GAIN,
LOW LINEARITY
24dB 7.5dBConversion Power Gain
HIGH GAIN,
HIGH LINEARITY LOW GAIN
Table 7. Cellular LNA S Parameters in High-Gain, High-Linearity Mode
0.109 59.1 0.669 -40.80.4961000 -90.6 3.3 74.9
0.104 58.3 0.674 -39.30.503950 -88.5 3.5 76.6
0.099 58.8 0.677 -38.30.51900 -86.1 3.7 79.4
0.096 60.1 0.683 -37.60.52850 -83.7 3.88 81.9
0.0908 60 0.689
0.089 60.6
-36.6
0.696 -35.9
0.714
S22
(mag)
-34.70.085
S12
(mag)
60.9
S22
(phase)
S12
(phase)
0.534800 -81.2 4.13
0.548750 -78.4
84.4
4.39 87.9
4.63
S21
(mag)
92.10.579
S11
(mag)
700 -74.8
S21
(phase)
FREQUENCY
(MHz)
S11
(phase)
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
18 ______________________________________________________________________________________
Table 9. Cellular Mixer S11 in High-Gain,
High-Linearity Mode
Table 8. PCS LNA S Parameters in High-Gain, High-Linearity Mode
0.158 100 0.769 -710.6142500 -113 3.78 74
0.126 99 0.754 -690.5712450 -113 3.79 73
0.106 93 0.739 -670.552400 -113 3.9 75
0.1 86 0.727 -660.542350 -112 3.88 78
0.099 82 0.705 -640.5252300 -110 3.83 81
0.094 79 0.683 -630.5032250 -107 3.67 82
0.093 73 0.677 -640.4672200 -104 3.56 81
0.101 71 0.695
0.103 74
-63
0.7 -61
0.69 -590.098 76
0.4052150 -106 3.68
0.3912100 -112
79
3.82 81
3.82 830.4072050 -115
0.094 76 0.681 -580.4232000 -116 3.85 83
0.09 75 0.673 -570.431950 -115 3.82 84
0.093 72 0.68 -550.4341900 -114 3.9 82
0.09 77 0.657 -530.4391850 -113 4.23 84
0.086 76 0.643
0.082 77
-52
0.64 -52
0.64
S22
(mag)
-510.077
S12
(mag)
77
S22
(phase)
S12
(phase)
0.441800 -113 4.18
0.4461750 -113
88
4.07 88
4.22
S21
(mag)
860.46
S11
(mag)
1700 -112
S21
(phase)
FREQUENCY
(MHz)
S11
(phase)
0.8421000 -48.5
0.842950 -46.3
0.843900 -44.1
0.844850 -42.2
0.846800 -40.2
0.849750 -38
0.853
S11
(mag)
700 -35.8
FREQUENCY
(MHz)
S11
(phase)
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
______________________________________________________________________________________ 19
Table 10. PCS Mixer S11 in High-Gain
High-Linearity Mode
Table 11. Mixer IF Port S22
DIGITAL MIXER
-1.1050 0.999
-2.26100 0.999
-2.46110 0.999
-2.89130 0.998
-3.35150 0.998
-4.45200 0.998
-4.67210 0.998
-5.48250 0.997
-6.48300 0.997
-7.47350 0.996
-8.36400 0.996
S22
(phase)
FREQUENCY
(MHz) S22
(mag)
FM MIXER
-7.82
-1.6950 0.999
250 0.995
-9.06300 0.994
-10.28
-2.3870 0.998
350
-2.9285 0.998
0.993
-11.40400 0.992
S22
(phase)
FREQUENCY
(MHz) S22
(mag)
-3.38100 0.997
-3.71110 0.997
-4.97150 0.996
-6.49200 0.995
FREQUENCY
(MHz)
1700
1750
1800
1850
1900
1950
2000
2050
2100
2150
2200
2250
2300
2350
2400
2450
2500
S11
(mag)
0.865
0.864
0.865
0.867
0.863
0.862
0.861
0.879
0.86
0.858
0.854
0.85
0.845
0.838
0.83
0.825
0.805
S11
(phase)
-62
-63
-64
-64
-65
-65
-66
-67
-68
-68
-69
-71
-72
-74
-76
-78
-82
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
20 ______________________________________________________________________________________
Typical Application Circuits
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
12
11
R2
R6
7.5k
R4
2k
R1
20k
BUFFERED
LO OUTPUTS
VCC
C5
100pF
C6
22pF
C7
100pF
C12
3.3pF
C14
1.5pF
C15
6800pF
C18
1pF
C2
100pF
C3
100pF
C4
22pF
C1
100pF
1.65nH
1pF
PCS DUPLEXER
DIPLEXER
LOGIC INPUTS
FROM
CELLULAR PA
CELLULAR LO
PCS LO
FROM
PCS PA
CELLULAR
DUPLEXER
3.3pF
6800pF
VCC
C19
2.7pF
MAX2320
(DUAL BAND, DUAL VCO INPUTS, AND DUAL IF OUTPUTS)
C17
6800pF
C11
3.3pF
C8
4.7pF
C10
1000pF
C13
0.01µF
C9
1000pF
L3
560nH
L4
110nH L5
110nH
R3
LOGIC
INPUT
FM
TO VGA
85MHz
210MHz
869MHz–894MHz
1930MHz–1990MHz
TO VGA
51Ω
R5
20k
VCC
NOTE: THE MAX2320 IS RECOMMENDED FOR
HANDSETS THAT OPERATE IN THREE MODES:
PCS-BAND CDMA, CELLULAR-BAND CDMA,
AND CELLULAR-BAND FM.
KEY FEATURES: TWO LO INPUT PORTS FOR
SEPARATE VCOs, TWO LO BUFFER OUTPUT PORTS.
VCC
51Ω
9
10
MAX2320
LNAINH
RLNA
LNAOUTL
LNAOUTH
GAIN
LIN
BAND
LNAINL
LOHIN
LOLIN
MIXINH
L6
5.6nH
L1
1.8nH
L2
6.8nH
3.85nH
MIXINL
RBIAS
CDMA+
CDMA-
BUFFEN
VCC
FMOUT
LOLOUT
LOHOUT
6800pF
4.7nH
R11
30Ω
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
______________________________________________________________________________________ 21
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
12
11
R6
7.5k
R4
2k
R1
20k
BUFFERED
LO OUTPUTS
VCC
C5
100pF
C6
22pF
C7
100pF
C12
3.9pF
C14
1.5pF
C15
6800pF
C18
1pF
C2
100pF
C3
100pF
C4
100pF
1.65nH
1pF
PCS DUPLEXER
DIPLEXER
LOGIC INPUTS
FROM
CELLULAR PA
CELLULAR LO
FROM
PCS PA
CELLULAR
DUPLEXER
3.3pF
6800pF
C19
2.7pF C17
6800pF
C11
3.9pF
C8
2.2pF
C10
1000pF
C13
0.01µF
C9
1000pF
L3
270nH
L4
120nH L5
120nH
LOGIC
INPUT
FM
TO VGA
184MHz
184MHz
869MHz–894MHz
1930MHz–1990MHz
TO VGA
VCC
VCC
R2
51Ω
R2
51Ω
9
10
MAX2321
LNAINH
RLNA
LNAOUTL
LNAOUTH
GAIN
LIN
BAND
LNAINL
LOHIN
LOLIN
MIXINH
L6
5.6nH
L1
1.8nH
L2
6.8nH
3.85nH
MIXINL
RBIAS
CDMA+
CDMA-
BUFFEN
VCC
FMOUT
LOLOUT
LOHOUT
x2
MAX2321
(DUAL BAND, DUAL VCO INPUTS, LO DOUBLER, DUAL IF OUTPUTS, AND LO BUFFER)
NOTE: THE MAX2321 IS RECOMMENDED FOR
TRIPLE-MODE PHONES.
KEY FEATURE: LO DOUBLER FOR SINGLE VCO
OPERATION.
R5
20k
4.7nH
6800pF
4.7nH
C1
100pF
VCC
R11
30Ω
Typical Application Circuits (continued)
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
22 ______________________________________________________________________________________
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
12
11
R2
51Ω
R3
2k
R1
20k
BUFFERED
LO OUTPUT
VCC
VCC
C5
100pF
C6
22pF
C11
3.3pF
C13
1.5pF
C14
6800pF
C16
1pF
C4
100pF
1.65nH
1pF
PCS DUPLEXER
LOGIC INPUTS
PCS OR
CELLULAR
LO
FROM PCS PA
C10
3.3pF
C8
1000pF
C12
0.01µF
L4
110nH
L5
110nH
LOGIC
INPUT
LOGIC
INPUT
TO VGA
210MHz
1930MHz–1990MHz
R4
20k
VCC
9
10
MAX2322
LNAINH
RLNA
N.C.
LNAOUTH
GAIN
LIN
SHDN
N.C.
LOHIN
N.C.
MIXINH
L6
5.6nH
L1
1.8nH
N.C.
RBIAS
CDMA+
CDMA-
BUFFEN
VCC
LOX2
N.C.
LOHOUT
x2
MAX2322
(PCS BAND, SINGLE MODE WITH OPTIONAL FREQUENCY DOUBLER)
NOTE: THE MAX2322 IS RECOMMENDED FOR PCS
SINGLE-BAND PHONES.
6800pF
C1
100pF
VCC
R11
30Ω
Typical Application Circuits (continued)
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
______________________________________________________________________________________ 23
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
12
11
R6
7.5k
R4
2k
R1
20k
BUFFERED
LO OUTPUT
VCC
VCC
C4
100pF
C6
100pF
C11
8.2pF
C3
100pF
LOGIC INPUTS
LOGIC OUTPUT
FROM
CELLULAR PA
CELLULAR
LO
CELLULAR
DUPLEXER
3.3pF
6800pF
C15
2.7pF
C14
6800pF
C10
8.2pF
C8
4.7pF
C8
1000pF
C12
0.01µF
C9
1000pF
L3
560nH
L4
270nH L5
270nH
LOGIC
INPUT
FM
TO VGA
85MHz
85MHz
869MHz–894MHz
TO VGA
R3
51Ω
R5
20k
VCC
9
10
MAX2324
MODEOUT
RLNA
LNAOUTL
N.C.
GAIN
LIN
SHDN
LNAINL
N.C.
LOLIN
N.C.
L1
6.8nH
3.85nH
MIXINL
RBIAS
CDMA+
CDMA-
BUFFEN
VCC
FMOUT
LOLOUT
N.C.
MAX2324
(CELLULAR BAND, DUAL IF OUTPUTS)
NOTE: THE MAX2324 IS RECOMMENDED
FOR DUAL-MODE (CDMA/FM) PHONES IN
THE CELLULAR BAND.
4.7nH
C1
100pF
VCC
R11
30Ω
Typical Application Circuits (continued)
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
24 ______________________________________________________________________________________
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
11
R6
7.5k
R4
2k
R1
20k
BUFFERED
LO OUTPUTS
VCC
C5
100pF
C6
22pF
C7
100pF
C12
3.9pF
C14
1.5pF
C15
6800pF
C18
1pF
C2
100pF
C3
100pF
C4
22pF
1.65nH
1pF
PCS DUPLEXER
DIPLEXER
LOGIC INPUTS
FROM
CELLULAR PA
AMPS
LO
PCS
LO
FROM
PCS PA
CELLULAR
DUPLEXER
3.3pF
6800pF
C19
2.7pF
C17
6800pF
C11
3.9pF
C8
2.2pF
C10
1000pF
C13
0.01µF
C9
1000pF
L3
270nH
L4
120nH L5
120nH
LOGIC
INPUT
FM
TO VGA
184MHz
184MHz
869MHz–894MHz
1930MHz–1990MHz
TO VGA
R5
20k
VCC
VCC
R2
51Ω
R3
51Ω
9
10
MAX2326
LNAINH
RLNA
LNAOUTL
LNAOUTH
GAIN
LIN
BAND
LNAINL
LOHIN
LOLIN
MIXINH
L6
5.6nH
L1
1.8nH
L2
6.8nH
3.85nH
MIXINL
RBIAS
CDMA+
CDMA-
BUFFEN
VCC
FMOUT
LOLOUT
LOHOUT
/2
MAX2326
(DUAL BAND, DUAL VCO INPUTS, AND DUAL IF OUTPUTS WITH LO DIVIDER)
NOTE: THE MAX2326 IS RECOMMENDED FOR
DUAL-BAND, TRIPLE-MODE PHONES.
KEY FEATURES: TWO LO INPUT/OUTPUT PORTS
FOR SEPARATE VCOs, A FREQUENCY DIVIDER
TO ALLOW THE USE OF A PCS VCO FOR BOTH
BANDS.
/2
6800pF
4.7nH
C1
100pF
VCC
R11
30Ω
Typical Application Circuits (continued)
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
______________________________________________________________________________________ 25
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
12
11
R2
51Ω
R3
51Ω
R6
7.5k
R4
2k
BUFFERED
LO OUTPUTS
VCC
C5
100pF
C6
22pF
C7
100pF
C12
1.5pF
C14
6800pF
C16
1pF
C2
100pF
C3
100pF
C4
100pF
6800pF
1pF
PCS SWITCH
DIPLEXER
LOGIC INPUTS
FROM
CELLULAR PA
AMPS LO
PCS1900 LO
FROM
PCS PA
CELLULAR
DUPLEXER
3.3pF
6800pF
C17
2.7pF
C15
6800pF
C11
1.5pF
C8
4.7pF
C10
1000pF
C13
0.01µF
C9
1000pF
L3
560nH
L4
56nH L5
56nH
LOGIC
INPUT
FM
TO VGA
PCS1900
400MHz
83MHz
TO VGA
R5
20k
VCC
VCC
9
10
MAX2327
LNAINH
N.C.
LNAOUTL
LNAOUTH
MODE
SHDN
BAND
LNAINL
LOHIN
LOLIN
MIXINH
L6
5.6nH
L1
1.8nH
L2
6.8nH
3.85nH
MIXINL
RBIAS
IFOUT+
IFOUT-
BUFFEN
VCC
FMOUT
LOLOUT
LOHOUT
MAX2327
(DUAL BAND, DUAL VCO INPUTS, AND SEPARATELY CONTROLLED VCO BUFFERS)
NOTE: THE MAX2327 IS RECOMMENDED FOR
DUAL-BAND, TRIPLE-MODE PHONES WITH TDMA
IN THE DIGITAL MODES, e.g., PCS1900 + AMPS.
KEY FEATURES: TWO LO INPUT/OUTPUT PORTS FOR
SEPARATE VCOs, SEPARATELY CONTROLLED VCO BUFFERS.
1930MHz–1990MHz
869MHz–894MHz
1.5pF
1.65nH
4.7nH
C1
100pF
VCC
R11
30Ω
Typical Application Circuits (continued)
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
26 ______________________________________________________________________________________
Pin Configurations (continued)
Chip Information
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
MIXINH
N.C.
RBIAS
CDMA+LNAINH
RLNA
N.C.
LNAOUTH
TOP VIEW
CDMA-
BUFFEN
VCC
LOX2GAIN
LIN
SHDN
N.C.
12
11
9
10
N.C.
LOHOUTLOHIN
N.C.
TSSOP
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
N.C.
MIXINL
RBIAS
CDMA+MODEOUT
RLNA
LNAOUTL
N.C.
CDMA-
BUFFEN
VCC
FMOUTGAIN
LIN
SHDN
LNAINL
12
11
9
10
LOLOUT
N.C.N.C.
LOLIN
TSSOP
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
MIXINH
MIXINL
RBIAS
IFOUT+LNAINH
N.C.
LNAOUTL
LNAOUTH
IFOUT-
BUFFEN
VCC
FMOUTMODE
SHDN
BAND
LNAINL
12
11
9
10
LOLOUT
LOHOUTLOHIN
LOLIN
TSSOP
MAX2322 MAX2324
MAX2327
TRANSISTOR COUNT: 1315
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
______________________________________________________________________________________ 27
Package Information
TSSOP.EPS
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
28 ______________________________________________________________________________________
NOTES