TEA0678T View Datasheet(PDF) - Philips Electronics

Part Name

Description

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TEA0678T

Dual Dolby* B-type noise reduction circuit, automatic music search, with differential outputs and mute

Philips Electronics 

Philips Semiconductors

Dual Dolby* B-type noise reduction circuit, automatic

music search, with differential outputs and mute

Preliminary specification

TEA0678

PINNING

SYMBOL PIN

DESCRIPTION

OUTA−

1 negative output channel A

OUTA+

2 positive output channel A

NR/AMS 3 noise reduction/music search switch

INCA

4 input mute/output stage channel A

OUTCA 5 output Dolby B processor channel A

INTA

6 integrating filter channel A

CONTRA 7 control voltage channel A

HPA

8 high-pass filter channel A

SCA

9 side chain channel A

TD

10 delay time constant

EQA

11 equalizing output channel A

EQFA

12 equalizing feedback channel A

VCC

INA1

13 supply voltage

14 input channel A1 (forward or reverse)

Vref

INA2

15 reference voltage

16 input channel A2 (reverse or forward)

INB2

17 input channel B2 (reverse or forward)

HS

18 head switch input

INB1

19 input channel B1 (forward or reverse)

GND

20 ground

EQFB

21 equalizing feedback channel B

EQB

22 equalizing output channel B

AMSEQ 23 AMS output and EQ switch input

SCB

24 side chain channel B

HPB

25 high-pass filter channel B

CONTRB 26 control voltage channel B

INTB

27 integrating filter channel B

OUTCB 28 output Dolby B processor channel B

INCB

29 input mute/output stage channel B

MUTE

30 mute switch

OUTB+ 31 positive output channel B

OUTB− 32 negative output channel B

handbook, halfpage

OUTA− 1

OUTA+ 2

NR/AMS 3

INCA 4

32 OUTB−

31 OUTB+

30 MUTE

29 INCB

OUTCA 5

28 OUTCB

INTA 6

27 INTB

CONTRA 7

26 CONTRB

HPA 8

SCA 9

25 HPB

TEA0678

24 SCB

TD 10

23 AMSEQ

EQA 11

EQFA 12

VCC 13

INA1 14

Vref 15

INA2 16

22 EQB

21 EQFB

20 GND

19 INB1

18 HS

17 INB2

MED770

Fig.2 Pin configuration.

1996 Jun 06

4

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