CXA2561Q View Datasheet(PDF) - Sony Semiconductor

Part Name

Description

Manufacturer

CXA2561Q

Dolby B-C Type Noise Reduction System with Playback Equalizer Amplifier

Sony Semiconductor 

Pin

No.

Symbol

Typical pin voltage

I/O

DC

AC

I/O

resis-

tance

CXA2561Q

(Ta = 25°C, VCC = 8.0V, DVCC = 5.0V)

Equivalent circuit

Description

Vcc

11 G2FB

12 G1FB

4.0V

—

—

—

147

11

12

500

Music signal interval

detection level

500

setting.

GND

Vcc

13 MSTC

—

— ——

147 853

13

10k

Time constant for

detecting the music

signal interval.

0.2V

when a

signal is

14 MSOUT

detected;

DVcc

—

O

—

14

when no

signal is

detected.

15 NRMODE

17 MUTESW

0.0V

when —

open.

18 TAPESW

I

15

100kΩ 17

147

18 100k

21

21 MSSW

–5–

GND

Vcc

Music sensor

output.

GND

Dolby NR mode

control.

Low (open):

Dolby B NR

High: Dolby C NR

Vcc Mute function

control.

Low (open):

Mute OFF

High: Mute ON

Playback equalizer

amplifier control.

Low (open): 70µs

High: 120µs

GND

Music sensor

control.

Low (open): MS ON

High: MS OFF

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