TDA4657T datasheet(4/17 Pages) PHILIPS

Il numero della parte	TDA4657T

Spiegazioni elettronici	Generic multi-standard decoder

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Produttore elettronici	PHILIPS [NXP Semiconductors]

Homepage	http://www.nxp.com

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4 / 17 page

June 1993

4

Philips Semiconductors

Preliminary speciﬁcation

Generic multi-standard decoder

TDA4657

PINNING

SYMBOL

DESCRIPTION

−(R−Y)O

1

colour difference signal output

−(R−Y)* for baseband delay line

DEEM

2

external capacitor for SECAM de-emphasis

−(B−Y)

O

3

colour difference signal output

−(B−Y)* for baseband delay line

CFOB

4

external capacitor SECAM demodulator control (B

−Y) Channel

GND

5

ground

IREF

6

external resistor for SECAM oscillator

VP

7

supply 8 V

CFOR

8

external capacitor SECAM demodulator control (R

−Y) Channel

CHRI

9

chrominance signal input

CACC

10

external capacitor for ACC control

HUE

11

input for HUE control and service switch

NIDT

12

external capacitor for identiﬁcation circuit (NTSC)

PIDT

13

external capacitor for identiﬁcation circuit (PAL and SECAM)

OSC

14

PAL crystal

PLL

15

external loop ﬁlter

2FSC

16

2

× f

sc output

No

17

standard setting input/output for NTSC 4.43

SECo

18

standard setting input/output for SECAM

PALo

19

standard setting input/output for PAL

SC

20

sandcastle input

Fig.2 Pin configuration.

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