Overview

The LC89973M is a CCD delay line for PAL television systems. It incorporates a comb filter for chrominance signal and a 1H delay line for luminance signal.

Features

? 5 V single-voltage power supply

? Built-in PLL 3 × frequency multiplier circuit allows 3 fsc operation from an fsc (4.43 MHz) input.

? Control pin switchable to handle PAL/GBI and 4.43 MHz NTSC systems.

? Built-in chrominance signal crosstalk exclusion comb filter features high precision comb characteristics in an adjustment-free circuit.

? Built-in peripheral circuits allow applications to be constructed with a minimum number of external components.

? Positive-phase signal input/positive-phase signal output (luminance signal)

Functions

? Two CCD shift registers (for chrominance and luminance signals)

? CCD drive circuits

? CCD stage count switching circuit

? CCD signal adder

? Auto-bias circuit

? Sync tip clamping circuit (luminance signal)

? Center-bias circuit (chrominance signal)

? Sample-and-hold circuit

? PLL 3 × frequency multiplier

? fsc clock output circuit

? RD voltage generator