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NJW1135

AUDIO PROCESSOR

s

GENERAL DESCRIPTION

s

PACKAGE OUTLINE

The

NJW1135

is a audio processor with sound

enhancement (BBE). It includes all of the functions

processing audio signal for TV, such as tone control,

balance, volume, mute, and AGC functions.

Also the

NJW1135

performs surround and sound

enhancement. The sound enhancement regenerates high

definitive and nearly real sound.

All of the internal status and variables are controlled by

2

NJW1135GK1

I C BUS interface.

s

FEATURES

q

Operating Voltage

8 to 13V

2

q

I C BUS Interface

q

BBE Sound Enhancement

Low Boost and High Boost: 15dB max.

q

Internal 6 Input Audio Selectors and Monitor Output

q

The AGC circuit reduces volume difference among input sources.

2

q

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

q

eala(NJRC Original Surround)

NJRC Original 3D Surround and Simulated Surround

2

q

Variable Surround Effect Level via I C

3D Surround mode, 2-Levels

q

Low Noise VCA

q

Bi-CMOS Technology

q

Package Outline

SOP40

s

BLOCK DIAGRAM

MONa

TONEHa

OUTa

TONELa

BB E1a

BB E2a

LINEa

AGC

SR

FIL2

CVA

IN1a

IN2a

IN3a

+4.5dB

-2dB

CVB

CTH

CTL

CSR

IN5a

SURRO

UND

IN6a

CONTROL

LOGIC

AGC

IN1b

IN2b

IN3b

INPUT

IN4b SELECTOR

IN5b

-2dB

IN6b

+4.5dB

BI AS

VCC

VOLUME1

BB E

TONE

VOLUME2

NJRC Original

3D Surround

&

NJRC Original

Simulated Stereo

CSB

.

IN4a

INPUT

SELECTOR

VOLUME1

BB E

TONE

VOLUME2

SDA

SCL

GND

MONb

TONEHb

TONELb

BB E1b

BB E2b

SS

FIL1

LINEb

OUTb

VREF

-1-

next

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