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NJW1141

AUDIO PROCESSOR

s

GENERAL DESCRIPTION

s

PACKAGE OUTLINE

The

NJW1141

is a sound processor includes all of the

functions required to process the audio signal for TV, such

as tone control, balance, volume, mute, and AGC functions.

All of the internal status and variables are controlled by

2

I C BUS interface.

s

FEATURES

q

Operating Voltage

8 to 10V

2

q

I C BUS Interface

q

Internal 4 Input Audio Selectors and Monitor Output

q

Low Noise VCA

2

q

Variable AGC Compression Level via I C (4-levels)

q

Bi-CMOS Technology

q

Package Outline

SDIP30, SDMP30

NJW1141L

NJW1141M

s

BLOCK DIAGRAM

MONa

AGC

TONE TONE

-La

-Ha

OUTa

-2dB

+4.5dB

SDA

SCL

CVA

CVB

CTH

CTL

IN1a

IN2a

IN3a

IN4a

SEL

VOL1

TONE

VOL2

I C BUS

Interface

2

AGC

IN1b

IN2b

IN3b

IN4b

SEL

-2dB

VOL1

TONE

VOL2

Bias

GND

Vcc

+4.5dB

MONb

TONE TONE

-Lb

-Hb

OUTb

Vref

-1-

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