TDA9845 查看數據表（PDF） - Philips Electronics

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TDA9845

TV and VTR stereo/dual sound processor with digital identification

Philips Electronics 

Philips Semiconductors

TV and VTR stereo/dual sound processor

with digital identification

PINNING

SYMBOL

C1

C2

CAGC

CLP

CDCL

Vi pil

Cref

Vi 1

Vi 2

Vi 3

Vo 2

Vo 1

CD1

LEDDU

LEDST

GND

CD2

VP

XTAL

C3

PIN

DESCRIPTION

1

control input Port C1

2

control input Port C2

3

AGC capacitor of pilot frequency amplifier

4

identification low-pass capacitor

5

DC loop capacitor

6

pilot frequency input voltage

7

capacitor of reference voltage (1⁄2VP)

8

AF input signal voltage 1 (from sound carrier 1 or

AM sound (standard L)

9

AF input signal voltage 2 (from sound carrier 2)

10 AF input signal voltage 3 (Mono sound)

11 AF output signal voltage 2 (Main)

12 AF output signal voltage 1 (Main)

13 50 µs de-emphasis capacitor of AF Channel 1

14 LED (dual)

15 LED (stereo)

16 ground (0 V)

17 50 µs de-emphasis capacitor of AF Channel 2

18 supply voltage (+5 to +8 V)

19 10 MHz crystal input

20 control input Port C3

Preliminary specification

TDA9845

lfpage

C1 1

20 C3

C2 2

19 XTAL

CAGC 3

18 VP

CLP 4

17 CD2

CDCL 5

Vi pil 6

16 GND

TDA9845

15 LEDST

Cref 7

14 LEDDU

Vi 1 8

13 CD1

Vi 2 9

12 Vo 1

Vi 3 10

11 Vo 2

MED646

Fig.3 Pin configuration.

1995 Mar 20

5

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