TDA8376 datasheet(33/44 Pages) PHILIPS

33 / 44 page

1996 Jan 26

Philips Semiconductors

Objective speciﬁcation

I2C-bus controlled PAL/NTSC TV processors

TDA8376; TDA8376A

13 TEST AND APPLICATION INFORMATION

Fig.11 Application diagram.

handbook, full pagewidth

MGE080

SDA

XTAL2

XTAL1

SCL

RI2

GI2

BI2

RGBIN2

RI1

GI1

BI1

BLKIN

BCLIN

EWD

VDR(p)

SECref

VDR(n)

HOUT

BYO

3.6

MHz

4.4

MHz

RYO

RYI

CVBS/

TXT

BYI

SCO

FBI

to text decoder

RGBIN1

CVBSINT

CVBSEXT

CVBS/Y

CHROMA

PIPO

TDA8395

TDA8376(A)

TDA4665

13.1

East-West output stage

In order to obtain correct tracking of the vertical and

horizontal EHT-correction, the E-W output stage should be

dimensioned as illustrated in Fig.12.

Resistor REW determines the gain of the E-W output stage.

Resistor Rc determines the reference current for both the

vertical sawtooth generator and the geometry processor.

The preferred value of Rc is 39 kΩ which results in a

reference current of 100

µA (Vref = 3.9 V

The value of REW must be:

Example: With Vref = 3.9 V Rc =39kΩ and Vscan = 120 V

then REW = 68 kΩ.

scan

ref

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TDA8376 Datasheet(PDF) 33 Page - NXP Semiconductors

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