DESCRIPTION

Operating from a single +5 V supply, the TK15409 is a video line driver IC that takes standard Y and C analog inputs and provides a composite analog output for driving 150 Ω loads (75 Ω resistor and 75 Ω cable load). 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; the chromanance (C) input is biased at 2.0 V and amplified 6 dB. The internal 1.5 kΩ SAG function resistor provides gain compensation for low frequency signals. During standby (Pin 5 grounded), the TK15409 consumes only 127 µW of power. Nominal power dissipation (no input) is typically 90 mW.

The TK15409M is available in the very small SOT23L-8 surface mount package.

FEATURES

■ Internal Y-C Summing Circuit

■ Voltage Gain is 6 dB Fixed

■ Internal 75 Ω Driver

■ Active High ON/OFF Control

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

■ Very Small Output Capacitor Using SAG Function Pin

■ Very Small Package (SOT23L-8)

■ Single +5 V Power Supply Operation

APPLICATIONS

■ Video Equipment

■ Digital Cameras

■ CCD Cameras

■ TV Monitors

■ Video Tape Recorders

■ LCD Projectors