TDA8376A 查看數據表（PDF） - Philips Electronics

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TDA8376A

I²C-bus controlled PAL/NTSC TV processors

Philips Electronics 

Philips Semiconductors

I2C-bus controlled PAL/NTSC TV processors

Objective specification

TDA8376; TDA8376A

1 FEATURES

• Source selection with 2 CVBS inputs and a Y/C (or extra

CVBS) input

• Output signals of the video switch circuit for the teletext

decoder and a Picture-In-Picture (PIP) processor

• Video identification circuit which is independent of the

synchronization for stable On Screen Display (OSD)

under ‘no-signal’ conditions

• Integrated chrominance trap with pre-shoot

compensation and bandpass filters (automatically

calibrated)

• Integrated luminance delay line

• Asymmetrical peaking in the luminance channel with a

(defeatable) noise coring function

• Black stretcher circuit in the luminance channel

• PAL/NTSC colour decoder with automatic search

system

• Easy interfacing with the TDA8395 (SECAM decoder)

for multistandard applications

• RGB control circuit with black-current stabilization and

white point adjustment; to obtain a good grey scale

tracking the black-current ratio of the 3 guns depends on

the white point adjustment

• Two linear RGB inputs and fast blanking

• Horizontal synchronization with two control loops and

alignment-free horizontal oscillator

• Vertical count-down circuit

• Geometry correction by modulation of the vertical and

E-W drive

• Vertical and horizontal zoom possibility for 16 : 9

applications (TDA8376A only)

• I2C-bus control of various functions

• Low dissipation (700 mW)

• Small amount of peripheral components compared with

competition ICs

• Y, U and V inputs and outputs.

2 GENERAL DESCRIPTION

The TDA8376 and TDA8376A are alignment-free I2C-bus

controlled video processors which contain a PAL/NTSC

colour decoder, luminance processor, sync processor,

RGB-control and deflection processor. The circuits have

been designed for use with the baseband chrominance

delay line TDA4665 and for DC-coupled vertical and

East-West (E-W) output stages. Both ICs are pin

compatible. The TDA8376A has a flexible horizontal and

vertical zoom possibility for 16 : 9 applications.

The supply voltage for the ICs is 8 V. The ICs are available

in an SDIP package with 52 pins and in a QFP package

with 64 pins (see Chapter 4).

The pin numbers indicated in this document are

referenced to the SDIP52; SOT247-1 package; unless

otherwise indicated.

1996 Jan 26

3

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