AN6291S Ver la hoja de datos (PDF) - Panasonic Corporation

Número de pieza

componentes Descripción

Fabricante

AN6291S

ICs for Cassette, Cassette Deck / Dual dbx II Noise Reduction System ICs

Panasonic Corporation 

ICs for Cassette, Cassette Deck

AN6291, AN6291S

s Application Circuits

1 Switching circuit of recording/playback

Input

–B

E

D

0.1µF

33kΩ

SW1a

3.3kΩ

0.1µF 4.7kΩ 33kΩ 6.8kΩ

2SC1327

22

0.1µF

–+

D

E

10µF 560Ω

+–

SW1b

+ 0.47µF

6800pF

–

15kΩ

1kΩ

6800pF

–

+ 10µF

51kΩ

+

22µF

–+

15kΩ –

D

OFF

ON

SW2a

0.01µF

SW1e

E

*2

21 20 19 18 17 16 15 14 13 12

+VCC

Output

–B

Current

Source

SUB

RMS– B

RMS – A

CCA– B

OP

Amp.– B

CCA– A

OP

Amp.– A

1

2

3

4

5

6

7

8

9 10 11

*1

+

2k

–+

15kΩ

1µF

–

(B)

+

– 10µF

22µF 51kΩ

6800pF

150kΩ

2SC1327

1µF 4.7kΩ 33kΩ 6.8kΩ

10kΩ

3.3kΩ

1kΩ

0.033µF

–

0.47µF

+

6800pF

15kΩ

SW1e

330Ω + – 560Ω

2700

pF

51kΩ

10µF

0.01µF

ON

OFF

SW2b

33kΩ

0.1µF

D

SW1d

E

Input

–A

D

E

–+

0.1µF

Output

–A

Logical condition of recording/playback

Pin11

VCC

Open

VCC

Pin12

Open

VCC

VCC

Mode

DECODE

ENCODE

OFF

* 1 Signals of 1kHz, 20mV are applied to the input of both channels at the same time, sinking current into the Pin13 should be

adjusted to 15µA±5%. Standard value at VCC=3V is about 1kΩ.

* 2 External circuit should not be connected with Pin21. Connected in the IC.

* 3 Users should follow the latest technical information from dbx company. Constant number might be changed.

Note 1) All the resistors and the capacitor with the mark should be used in the error less than ±5%.

Note 2) S1a~ S1e : Switch record, playback (Above figure shows “PLAYBACK” mode).

Note 3) S2a~ S2b : dbx ON-OFF switch (Above figure shows “ON” mode).

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