January 2000 TOKO, Inc.

Page 1

TK15400

FEATURES

s Fixed Gain (6 dB)

s Internal 75

s Very Small Output Capacitor Using SAG

Function Pin

s Active High ON/OFF Control

s Very Low Standby Current (typ. I

s Internal Summing Circuit of Y/C Signal

s Single +5 V Power Supply Operation

BLOCK DIAGRAM

TK15400

APPLICATIONS

s Video Equipment

s Digital Cameras

s CCD Cameras

s TV Monitors

s Video Tape Recorders

s LCD Projectors

75

Ω 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

Ω 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

a series 75

Ω resistor and 75 Ω 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

Ω resistor and 75 Ω cable load.

During standby (Pin 5 grounded), the TK15400 consumes

only 113

µW 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