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NJW1132A

PRELIMINARY

AUDIO PROCESSOR with SOUND ENHANCEMENT

s

GENERAL DESCRIPTION

The

NJW1132A

is a sound processor with sound

enhancement (BBE). It includes all of functions processing

audio signal for TV, such as tone control, balance, volume,

mute, and AGC functions.

Also the

NJW1132A

performs surround and sound

enhancement. The sound enhancement regenerates high

definitive and nearly real sound.

All of internal status and variables are controlled by I

2

C

BUS interface.

s

PACKAGE OUTLINE

NJW1132AL

NJW1132AM

s

FEATURES

8 to 13V

q

Operating Voltage

2

q

I C BUS Interface

q

BBE Sound Enhancement (Low Boost and High Boost: 15dB max.)

q

AGC Circuit (It reduces volume difference among input sources.)

q

Matrix Surround

q

Bi-CMOS Technology

SDIP30, SDMP30

q

Package Outline

s

BLOCK DIAGRAM

AGC1

TONE TONE

BBE BBE BBETONE

2a OUTa INa 鈥揌a 鈥揕a PS

1a

OUTa

CTH

CTL

IN a

Volume

1

BBE

Tone

Volume

2

CVA

CVB

Control

Logic

AGC

Surround

AUX0

AUX1

SDA

SCL

IN b

Volume

1

BBE

Tone

Volume

2

Bias

GND

VCC

AGC2

BBE BBE BBETONETONE TONE

1b 2b OUTb INb 鈥揌b 鈥揕b

OUTb

Vref

-1-

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