FEATURES

Available in all ICs:

· Vision IF amplifier with high sensitivity and good figures

for differential phase and gain

· PLL demodulator for the IF signal

· Alignment-free sound demodulator

· Flexible source selection with a CVBS input for the

internal signal and Y/C or CVBS input for the external

signal

· Audio switch

· The output signal of the CVBS (Y/C) switch is externally

available

· Integrated chrominance trap and band-pass filters

(auto-calibrated)

· Luminance delay line integrated

· A symmetrical peaking circuit in the luminance channel

· Black stretching of non-standard CVBS or luminance

signals

· RGB control circuit with black current stabilization and

white point adjustment

· Linear RGB inputs and fast blanking

· Horizontal synchronization with two control loops and

alignment-free horizontal oscillator

· Slow start and slow stop of the horizontal drive pulses

· Vertical count-down circuit

· Vertical driver optimized for DC-coupled vertical output

stages

· I2C-bus control of various functions

· Low dissipation

· Small amount of peripheral components compared with

competition ICs.

GENERAL DESCRIPTION

The various versions of the TDA837x series are I2C-bus

controlled single-chip TV processors which are intended to

be applied in PAL/NTSC (TDA8374 and TDA8375) and

NTSC (TDA8373 and TDA8377) television receivers.

All ICs are available in an SDIP56 package and some

versions are also available in a QFP64 package. The ICs

are pin compatible so that with one application board

NTSC and PAL/NTSC (or multistandard together with the

SECAM decoder TDA8395) receivers can be built.

Functionally this IC series is split in to 2 categories:

· Versions intended to be used in economy TV receivers

with all basic functions

· Versions with additional functions such as E-W

geometry control, horizontal and vertical zoom function

and YUV interface which are intended for TV receivers

with 110° picture tubes.

The various type numbers are given in Table 1.

The detailed differences between the various ICs are

given in Table 2.