Part Number: LA7674

Function: Color TV singl-chip signal processor for NTSC systems (PLL detection)

Package: DIP 52 Pin Type

Manufacturer: SANYO (Panasonic)

Pinouts:

 

Description

The LA7674 improves upon the black-level, horizontaljitter, switch-on drift performance of the single-chip LA7672 used to date. Also a single-chip IC, the device is for color TVs based on the NTSC (National Television System Committee) system with an on-chip circuit for all VIF, SIF, video, chroma and deflection signal processing.

A Color TV Single-Chip Signal Processor is an integrated circuit that processes video and audio signals for color televisions. It is a specialized microprocessor that receives input signals from various sources such as cable, satellite, or broadcast television, and processes them to produce a high-quality image and sound.

Functions and Features

[VIF]
1. PLL detection (high video and audio quality)
2. High-gain VIF amplifier
3. High speed AGC
4. On-chip APC time constant switch

[SIF]
1. Simultaneous sound IN/OUT
2. Video/audio simultaneous muting, or audio-only muting possible

[Deflection]
1. Adjustment-free horizontal, vertical synchronization
2. Dual AFC system with excellent anti-noise characteristics
3. External adjustment of vertical synchronization sensitivity
4. Vertical size is constant with no-signal

Block Diagram:

Other data sheets are available within the file: LA7672

LA7674 Datasheet PDF Download