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NJW1173

AUDIO PROCESSOR

s

GENERAL DESCRIPTION

The

NJW1173

is an audio processor which includes volume,

balance, tone control, surround, simulated stereo and AGC

function.

Also the

NJW1173

features high precision characteristics about

channel balance, it is less than 鹵1.0dB at 鈥?0dB attenuation.

2

All of internal status and variables are controlled by I C BUS.

It is suitable for any TV set.

s

PACKAGE OUTLINE

NJW1173V

s

FEATURES

q

Operating Voltage

8 to 13V

2

q

I C BUS Interface

(Fast mode applicable, 3V I/F applicable)

q

Low Output Noise

2

q

AGC Circuit (Selectable 4-stage compression level via I C BUS)

q

"eala" (NJRC Surround)

q

Simulated Surround

q

Bi-CMOS Technology

q

Package Outline

SSOP20

s

BLOCK DIAGRAM

AGC

SRFIL

TONE TONE

-Ha

-La

OUTa

CVO

CBA

CTH

CTL

I

2

C Bus

Interface

INa

VOL1

TONE

VOL2

CSR

AGC

eala

&

Sim ulate

Stereo

SCL

INb

VOL1

TONE

VOL2

Bias

SDA

V+

GND

TONE TONE

-Hb

-Lb

OUTb

Vref

-1-

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