TDA4470 Ver la hoja de datos (PDF) - Temic Semiconductors

Número de pieza

componentes Descripción

Fabricante

TDA4470

Multistandard Video-IF and Quasi Parallel Sound Processing

Temic Semiconductors 

TDA4470-M

Block Diagram

Offset

comp.

(optional)

Loop

filter

VCO

ÏÏL’ switch

VIF

76ÏÏÏ

CAGC

8

ÏÏÏ15

CBL

Tuner

Take over

11

ÏÏÏÏ10

point

SIF 2

27

ÏÏÏ28

SIF input

ÏÏswitch

3ÏÏ

SIF 1

21ÏÏÏ

Ï5

CAGC

Ï Ï ÏÏ ÏÏ 26

18

20

21

FPLL

VCO

0°

+

90° phase shift

VIF amp

AGC

(VIF)

Tuner

AGC

SIF amp

Video det.

Supply

FM det.

AGC

(SIF)

AM det.

Figure 1. Block diagram

Ï14

Control

AFC

19

AFC

Ï ÏÏswitch

Ï ÏÏ 22

ÏÏ AFC

ÏÏ12

Video

13

ÏÏ ÏÏÏÏ Standard

Standard

switch

23

Ï ÏÏVS

Ï ÏÏ 17

ÏÏ CRef

24

ÏÏ Intercarrier

(FM / NICAM)

ÏÏ25

AF

(AM)

Ï 4,9,16

95 10851

2 (16)

TELEFUNKEN Semiconductors

Preliminary Information

Rev. A2, 15-Oct-96

Share Link: