March 2010 Doc ID 2153 Rev 3 1/15
15
LF253, LF353
Wide bandwidth dual JFET operational amplifiers
Features
■Low power consumption
■Wide common-mode (up to VCC+) and
differential voltage range
■Low input bias and offset current
■Output short-circuit protection
■High input impedance JFET input stage
■Internal frequency compensation
■Latch up free operation
■High slew rate 16 V/µs (typical)
Description
These circuits are high speed JFET input dual
operational amplifiers incorporating well matched,
high voltage JFET and bipolar transistors in a
monolithic integrated circuit.
The devices feature high slew rates, low input
bias and offset currents, and low offset voltage
temperature coefficient.
N
DIP8
(Plastic package)
D
SO-8
(Plastic micro package)
Pin connections
(top view)
1
2
3
4
5
6
7
8
-
+-
+
1 - Output1
2 - Inverting input 1
3 - Non-inverting input 1
4 - VCC-
5 - Non-inverting input 2
6 - Inverting input 2
7 - Output 2
8 - VCC+
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Schematics LF253, LF353
2/15 Doc ID 2153 Rev 3
1 Schematics
Figure 1. Schematic diagram (each amplifier)
Output
Non-inverting
input
Inverting input
VCC+
VCC-
100 Ω
1.3 k
30k
35 k 35 k 100 Ω
1.3 k
8.2 k
Offset Null1 Offset Null2
100 Ω
200 Ω
LF253, LF353 Absolute maximum ratings and operating conditions
Doc ID 2153 Rev 3 3/15
2 Absolute maximum ratings and operating conditions
Table 1. Absolute maximum ratings
Symbol Parameter Value Unit
VCC Supply voltage(1) ±18 V
ViInput voltage(2) ±15 V
Vid Differential input voltage(3) ±30 V
Rthja
Thermal resistance junction to ambient(4)
SO-8
DIP8
125
85
°C/W
Rthjc
Thermal resistance junction to case(4)
SO-8
DIP8
40
41
°C/W
Output short-circuit duration(5) Infinite
Tstg Storage temperature range -65 to +150 °C
ESD
HBM: human body model(6) 1kV
MM: machine model(7) 200 V
CDM: charged device model(8) 1.5 kV
1. All voltage values, except differential voltage, are with respect to the zero reference level (ground) of the supply voltages
where the zero reference level is the midpoint between VCC+ and VCC-.
2. The magnitude of the input voltage must never exceed the magnitude of the supply voltage or 15 volts, whichever is less.
3. Differential voltages are the non-inverting input terminal with respect to the inverting input terminal.
4. Short-circuits can cause excessive heating and destructive dissipation. Values are typical.
5. The output may be shorted to ground or to either supply. Temperature and/or supply voltages must be limited to ensure
that the dissipation rating is not exceeded
6. Human body model: a 100 pF capacitor is charged to the specified voltage, then discharged through a 1.5 kΩ resistor
between two pins of the device. This is done for all couples of connected pin combinations while the other pins are floating.
7. Machine model: a 200 pF capacitor is charged to the specified voltage, then discharged directly between two pins of the
device with no external series resistor (internal resistor < 5 Ω). This is done for all couples of connected pin combinations
while the other pins are floating.
8. Charged device model: all pins and the package are charged together to the specified voltage and then discharged directly
to the ground through only one pin. This is done for all pins.
Table 2. Operating conditions
Symbol Parameter LF253 LF353 Unit
VCC Supply voltage 6 to 36 V
Toper Operating free-air temperature range -40 to +105 0 to +70 °C
Electrical characteristics LF253, LF353
4/15 Doc ID 2153 Rev 3
3 Electrical characteristics
Table 3. Electrical characteristics at VCC = ±15 V, Tamb = +25°C (unless otherwise specified)
Symbol Parameter Min. Typ. Max. Unit
Vio
Input offset voltage (Rs = 10kΩ)
Tmin ≤ T
amb ≤ T
max
310
13 mV
DVio Input offset voltage drift 10 µV/°C
Iio
Input offset current (1)
Tmin ≤ T
amb ≤ T
max
5 100
4
pA
nA
Iib
Input bias current (1)
Tmin ≤ T
amb ≤ T
max
20 200
20
pA
nA
Avd
Large signal voltage gain (RL = 2kΩ, Vo = ±10V)
Tmin ≤ Tamb ≤ T
max
50
25
200 V/mV
SVR Supply voltage rejection ratio (RS = 10kΩ)
Tmin ≤ T
amb ≤ T
max
80
80
86 dB
ICC
Supply current, no load
Tmin ≤ T
amb ≤ T
max
1.4 3.2
3.2 mA
Vicm Input common mode voltage range ±11 +15
-12 V
CMR Common mode rejection ratio (RS = 10kΩ)
Tmin ≤ T
amb ≤ T
max
70
70
86 dB
IOS
Output short-circuit current
Tmin ≤ T
amb ≤ Tmax
10
10
40 60
60 mA
±Vopp
Output voltage swing
RL = 2kΩ
RL = 10kΩ
Tmin ≤ T
amb ≤ T
max
RL = 2kΩ
RL = 10kΩ
10
12
10
12
12
13.5 V
SR Slew rate, Vi = 10V, RL = 2kΩ, CL = 100pF, unity gain 12 16 V/µs
trRise time, Vi = 20mV, RL = 2kΩ, CL = 100pF, unity gain 0.1 µs
Kov Overshoot, Vi = 20mV, RL = 2kΩ, CL = 100pF, unity gain 10 %
GBP Gain bandwidth product, f = 100kHz, Vin = 10mV, RL = 2kΩ, CL = 100pF 2.5 4 MHz
RiInput resistance 1012 Ω
THD Total harmonic distortion, f= 1kHz, Av= 20dB, RL= 2kΩ, CL=100pF,
Vo= 2Vpp
0.01 %
en
Equivalent input noise voltage
RS = 100Ω, f = 1KHz 15
∅m Phase margin 45 Degrees
Vo1/Vo2 Channel separation (Av = 100) 120 dB
1. The input bias currents are junction leakage currents which approximately double for every 10°C increase in the junction
temperature.
nV
Hz
------------
LF253, LF353 Electrical characteristics
Doc ID 2153 Rev 3 5/15
Figure 2. Maximum peak-to-peak output
voltage vs. frequency, RL = 2 kΩ
Figure 3. Maximum peak-to-peak output
voltage vs. frequency, RL = 10 kΩ
VCC = +/- 15 V
VCC = +/- 10 V
VCC = +/- 5 V
RL = 2 kΩ
Tamb = +25°C
V
CC
= +/- 15 V
V
CC
= +/- 10 V
V
CC
= +/- 5 V
R
L
= 10 kΩ
T
amb
= +25°C
Figure 4. Maximum peak-to-peak output
voltage versus frequency
Figure 5. Maximum peak-to-peak output
voltage versus free air temperature
V
CC
= +/- 15 V
R
L
= 2 kΩ
T
amb
= +25°C
T
amb
= -55°C
T
amb
= +125°C
V
CC
= +/- 15 V
R
L
= 10 kΩ
R
L
= 2 kΩ
Figure 6. Maximum peak-to-peak output
voltage versus load resistance
Figure 7. Maximum peak-to-peak output
voltage versus supply voltage
LOAD RESISTANCE (kΩ)
V
CC
= +/- 15 V
T
amb
= +25°C
R
L
= 10 kΩ
T
amb
= +25°C
Electrical characteristics LF253, LF353
6/15 Doc ID 2153 Rev 3
Figure 8. Input bias current versus free air
temperature
Figure 9. Large signal differential voltage
amplification versus free air temp.
V
CC
= +/- 15 V
V
CC
= +/- 15 V
V
O
= +/- 10 V
R
L
= 2 kΩ
Figure 10. Large signal differential voltage
amplification and phase shift
versus frequency
Figure 11. Total power dissipation versus free
air temperature
V
CC
= +/- 15 V
R
L
= 2 kΩ
T
amb
= +125°C
C
L
= 100 pF
Differential
voltage
amplification
(left scale)
Phase shift
(right scale)
V
CC
= +/- 15 V
No signal
no load
Figure 12. Supply current per amplifier versus
free air temperature
Figure 13. Supply current per amplifier versus
supply voltage
V
CC
= +/- 15 V
No signal
no load
T
amb
= +25°C
No signal
no load
LF253, LF353 Electrical characteristics
Doc ID 2153 Rev 3 7/15
Figure 14. Common mode rejection ratio
versus free air temperature
Figure 15. Voltage follower large signal pulse
response
VCC = +/- 15 V
RL = 10 kΩ
VCC = +/- 15 V
RL = 2 kΩ
Tamb = +25°C
OUTPUT
CL = 100 pF
μs
INPUT
Figure 16. Output voltage versus elapsed time Figure 17. Equivalent input noise voltage
versus frequency
Figure 18. Total harmonic distortion versus
frequency
μs
V
CC
= +/- 15 V
R
L
= 2 kΩ
T
amb
= +25°C
OVERSHOOT
t
r
VCC = +/- 15 V
RS = 100 Ω
Tamb = +25°C
AV = 10
V
CC
= +/- 15 V
Vo(rm s) = 6 V
T
amb
= +25°C
A
V
= 1
Parameter measurement information LF253, LF353
8/15 Doc ID 2153 Rev 3
4 Parameter measurement information
Figure 19. Voltage follower Figure 20. Gain of 10 inverting amplifier
R
L
= 2 kΩ
C
L
= 100 pF
e
O
1/2
LF253
e
I
10 kΩ
C
L
= 100 pF
1/2
LF253
R
L
e
O
e
I
1 kΩ
LF253, LF353 Typical application
Doc ID 2153 Rev 3 9/15
5 Typical application
Figure 21. Quadruple oscillator
Package information LF253, LF353
10/15 Doc ID 2153 Rev 3
6 Package information
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK® packages, depending on their level of environmental compliance. ECOPACK®
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK® is an ST trademark.
LF253, LF353 Package information
Doc ID 2153 Rev 3 11/15
6.1 DIP8 package information
Figure 22. DIP8 package mechanical drawing
Table 4. DIP8 package mechanical data
Ref.
Dimensions
Millimeters Inches
Min. Typ. Max. Min. Typ. Max.
A5.330.210
A1 0.38 0.015
A2 2.92 3.30 4.95 0.115 0.130 0.195
b 0.36 0.46 0.56 0.014 0.018 0.022
b2 1.14 1.52 1.78 0.045 0.060 0.070
c 0.20 0.25 0.36 0.008 0.010 0.014
D 9.02 9.27 10.16 0.355 0.365 0.400
E 7.62 7.87 8.26 0.300 0.310 0.325
E1 6.10 6.35 7.11 0.240 0.250 0.280
e 2.54 0.100
eA 7.62 0.300
eB 10.92 0.430
L 2.92 3.30 3.81 0.115 0.130 0.150
Package information LF253, LF353
12/15 Doc ID 2153 Rev 3
6.2 SO-8 package information
Figure 23. SO-8 package mechanical drawing
Table 5. SO-8 package mechanical data
Ref.
Dimensions
Millimeters Inches
Min. Typ. Max. Min. Typ. Max.
A1.750.069
A1 0.10 0.25 0.004 0.010
A2 1.25 0.049
b 0.28 0.48 0.011 0.019
c 0.17 0.23 0.007 0.010
D 4.80 4.90 5.00 0.189 0.193 0.197
E 5.80 6.00 6.20 0.228 0.236 0.244
E1 3.80 3.90 4.00 0.150 0.154 0.157
e 1.27 0.050
h 0.25 0.50 0.010 0.020
L 0.40 1.27 0.016 0.050
L1 1.04 0.040
k1° 8°1° 8°
ccc 0.10 0.004
LF253, LF353 Ordering information
Doc ID 2153 Rev 3 13/15
7 Ordering information
Table 6. Order codes
Order code Temperature
range Package Packing Marking
LF253N
-40°C, +105°C
DIP8 Tube LF253N
LF253D
LF253DT SO-8 Tu b e or
Tape & reel 253
LF353N
0°C, +70°C
DIP8 Tube LF353N
LF353D
LF353DT SO-8 Tu b e or
Tape & reel 353
Revision history LF253, LF353
14/15 Doc ID 2153 Rev 3
8 Revision history
Table 7. Document revision history
Date Revision Changes
01-Mar-2001 1 Initial release.
08-Sep-2008 2
Updated document format.
Removed information concerning military temperature range
(LF153).
Added L1 parameter dimensions in Table 5: SO-8 package
mechanical data.
25-Mar-2010 3 Corrected error in Table 6: Order codes: LF253N, LF253D, LF353N
and LF353D proposed in tube packing.
LF253, LF353
Doc ID 2153 Rev 3 15/15
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