DESCRIPTION

Operating from a single +5 V supply, the TK15411 is a single-channel video line driver IC that takes a standard video analog input and provides a buffered analog output for driving a 150 Ω load. The standard video input signal (1 VP-P typical) is internally clamped to 1.25 V and amplified 6 dB to produce 2 VP-P (typical) into a series 75 Ω resistor and 75 Ω cable load. The internal 1.5 kΩ SAG function resistor provides gain compensation for low frequency signals. The built-in superimpose circuit provides two levels (45 and 140 IRE) of character generation to the video signal. During standby (Pin 5 grounded), the TK15411 consumes only 125 µW of power. Nominal power dissipation (no input) is typically 73 mW.

FEATURES

■ Superimpose Circuit for Two-Level (45 and 140 IRE) Character Generation

■ Fixed Gain (6 dB)

■ Internal 75 Ω Driver with Clamp Circuit

■ Very Small Output Capacitor Using SAG Function Pin

■ Active High ON/OFF Control

■ Very Low Standby Current (typ. ISTBY ≤ 25 µA)

■ Single +5 V Power Supply Operation

APPLICATIONS

■ Video Equipment

■ Digital Cameras

■ CCD Cameras

■ TV Monitors

■ Video Tape Recorders

■ LCD Projectors