NJM2207
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VIDEO SUPER IMPOSER
■ GENERAL DESCRIPTION
The NJM2207 is video signal superimposer, with synchronous
separation circuit, vertical sinchronous reproduce circuit and two
video high performance switches for switching from video signal to
character signal and background signal.
The NJM2207 is suitable for simply indicating the date time, TV
channel and others.
■ FEATURES
● Operating Voltage (+4.75V to +13V)
● With Synchronous Separation Circuit
● With Vertical Synchronous Reproduce Circuit
● Package Outline DIP14, DMP14, ZIP16
● Bipolar Technology
■ RECOMMENDED OPERATING CONDITION
● Operating Voltage 4.75 to 13V
■ ABSOLUTE MAXIMUM RATINGS (Ta=25°C)
PARAMETER SYMBOL RATINGS UNIT
Supply Voltage V+ 17 V
Power Dissipation PD (ZIP16) 500 mW
(DIP14) 700 mW
(DMP14) 300 mW
Operating Temperature Range Topr -40 to +85 °C
Storage Temperature Range Tstg -40 to +125 °C
■ ELECTRICAL CHARACTERISTICS (Ta=25°C, V+=5V)
PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT
Operating Current ICC - 6.5 9 mA
Video Signal Processing Section (Video Input 2VPP, Source Resistance=75Ω)
OFF-SET Voltage (Back-ground Input) VBOS Cross Voltage In Ext.10kΩ Resistor - - 0.1 V
OFF-SET Voltage (Char. Input) VCOS Cross Voltage In Ext.10kΩ Resistor - - 0.1 V
OFF-Voltage (Background Cont. Input) VBL - - 0.4 V
OFF-Voltage (Char. Cont. Input) VCL - - 0.4 V
ON-Voltage (Background Cont. Input) VBH 2.0 - - V
ON-Voltage (Char. Cont. Input) VCH 2.0 - - V
Transfer Gain GV R
L=5kΩ -1 - +1 dB
Frequency Response Gf f=10MHz,RL=5kΩ - -0.2 - dB
Crosstalk In Each Signal CΤ Video Input (f=3.58MHz) - 50 -
Background Input (f=3.48MHz)
Char. Input (f=3.68MHz)
Each Signal. is Sine-Wave RL=5kΩ
Video Differential Phase DP RL=5kΩ - - 3 Deg
Video Differential Gain DG RL=5kΩ - - 3 %
■ PACKAGE OUTLINE
NJM2207S
(ZIP16)
NJM2207D
(DIP14)
NJM2207M
(DMP14)
NJM2207
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■ ELECTRICAL CHARACTERISTICS
SYNC. SEPATION SECTION (Ta=25°C, V+=5V)
PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT
Sync. Sepa. Input Threshold Voltage VISP Source Resistance Rg=75Ω 100 140 180 mV
H-Sync. High Level VHH1 R
L=100kΩ Pin 3 (13) 4.0 - - V
H-Sync. High Level VHH2 R
L=2.2kΩ Pin 3 (13) 3.6 4.1 - V
H-Sync. Low Level VHL R
L=2.2kΩ Pin 3 (13) - - 0.1 V
H-Sync. High Level VH¯H R
L=100kΩ Pin 4 (14) 4.9 - - V
H-Sync. Low Level VH¯L R
L=100kΩ Pin 4 (14) - - 0.3 V
V-Sync. High Level VVH1 R
L=100kΩ Pin 7 (2) 4.0 - - V
V-Sync. High Level VVH2 R
L=10kΩ Pin 7 (2) 3.6 4.1 - V
V-Sync. Low Level VVL R
L=10kΩ Pin 7 (2) - - 0.1 V
V-Sync. High Level VV¯H R
L=100kΩ Pin 9 (4) 4.9 - - V
V-Sync. Low Level VV¯L R
L=100kΩ Pin 9 (4) - - 0.3 V
Schmitt Trigger
Threshold High Level VVTH Pin 5 Input Voltage (1) 1.9 2.1 2.3 V
Threshold Low Level VVTL Pin 5 Input Voltage (1) 1.1 1.3 1.5 V
(Note) : ( ) to DIP-14/DMP-14
■ TEST CIRCUIT
NJM2207
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■ TYPICAL APPLICATION
Note 1: Pin Connection to ZIP-16 (Pin 2, Pin 15: NC). ( ) to DIP-14/DMP-14
Note 2: Syn. Sepa. Input Threshold voltage increases 40mV (typ.) when putting 1MΩ in to Pin 1 (Pin 12).
NJM2207
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■ PRINCIPEL OF CHARACTER SUPERIMPOSER
Basic principle is shown at Fig.1.
Usual TV has video (composite) signal output and input terminals to connect VCR or others. There is all information
about picture on video composite signal (Ref. to Fig. 2). Its time signal of horizontal and vertical synchronous signal
indicates the brighten place of TV tube. For brightening TV tube regardless video signal, the video input signal has to be
switched to DC level (luminance level) on that scanning time. On this method, character is shown with background of
usual picture.
Fig.1 Principle of Character Superimposer
Fig.2 Composite Video Signal
NJM2207
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■ CIRCUIT CONFIGURATION
Date superimposer circuit configuration on TV is shown at Fig. 3. The NJM2207 includes video switches whith convert,
usual video signal (horizontal and vertical synchronous signal, video) to signal, of superimposed character given by
character generator.
Fig.3 Typiclal circuit of date superimposer
NJM2207
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■APPLICATION
This IC requires 1MΩ resistance between INPUT and GND pin for clamp type input since the minute current causes an
unstable pin voltage.
[CAUTION]
The specifications on this databook are only
given for information , without any guarantee
as regards either mistakes or omissions. The
application circuits in this databook are
described only to show representative usages
of the product and not intended for the
guarantee or permission of any right including
the industrial rights.
