
January 2000 TOKO, Inc.
Page 1
TK15400
FEATURES
I
Fixed Gain (6 dB)
I
Internal 75
Drivers
I
Very Small Output Capacitor Using SAG
Function Pin
I
Active High ON/OFF Control
I
Very Low Standby Current (typ. I
STBY
≤
25
μ
A)
I
Internal Summing Circuit of Y/C Signal
I
Single +5 V Power Supply Operation
BLOCK DIAGRAM
TK15400
APPLICATIONS
I
Video Equipment
I
Digital Cameras
I
CCD Cameras
I
TV Monitors
I
Video Tape Recorders
I
LCD Projectors
75
VIDEO LINE DRIVER
DESCRIPTION
Operating from a single +5 V supply, the TK15400 is a
triple video line driver IC that takes standard Y/C analog
inputs and provides simultaneous Y/C and composite
analog outputs for driving 75
lines. Internal summing of
the Y and C inputs is performed to produce the composite
video output. The luminance (Y) input is clamped at
1.25 V and amplified 6 dB to produce 2 V
P-P
(typical) into
a series 75
resistor and 75
cable load. The internal
1.5 k SAG function resistor provides gain compensation
for low frequency signals. The chromanance (C) input is
biased at 2.0 V and amplified 6 dB to produce 1.3 V
P-P
(typical) into a series 75
resistor and 75
cable load.
During standby (Pin 5 grounded), the TK15400 consumes
only 113
μ
W of power. Nominal power dissipation (no
input) is typically 168 mW.
The TK15400M is available in the SSOP-12 Surface
Mount Package.
ORDERING INFORMATION
TAPE/REEL CODE
TL: Tape Left
Tape/Reel Code
TK15400M
Y-OUTPUT
VCC
Y-INPUT
GND
STANDBY
Y-SAG
CVBS-OUTPUT
CVBS-SAG
C-OUTPUT
GND
GND
C-INPUT
1.5 k
5 k
5 k
1.5 k
5 k
5 k
100 k
VCC