Overview

The LC89975M is a lower-cost PAL-Format CCD delay line based on the LC89970M, with the sizes of chip and package miniaturized and the external parts count reduced.

Features

• 5 V single-voltage power supply

• On-chip 3× PLL circuit for 3·fsc operation from an fsc (4.43 MHz) input

• Supports PAL/GBI and 4.43 NTSC systems, selected by a control pin input

• Includes an on-chip comb filter for chrominance signal crosstalk exclusion. This adjustment-free circuit provides high-precision comb characteristics.

• Peripheral circuits included on chip to allow operation with minimal external circuits.

• Positive-phase signal input, positive phase signal output (luminance signal)

Functions

• CCD shift register (for chrominance and luminance signals)

• CCD drive circuit

• Circuit for switching the number of CCD stages

• CCD signal addition circuit

• Auto-bias circuit

• Sync tip clamping circuit (luminance signal)

• Center bias circuit (chrominance signal)

• Sample-and-hold circuit

• PLL 3× circuit

• 3·fsc clock output circuit

• RD voltage generation step-up circuit