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NJW1136

PRELIMINARY

AUDIO PROCESSOR with Subwoofer Output

I

GENERAL DESCRIPTION

The

NJW1136

is a sound processor with subwoofer

output includes all of functions processing audio signal for

TV, such as tone control, balance, volume, mute, and AGC

functions.

Also the

NJW1136

includes the LPF for subwoofer output

and bass boost function.

The original surround system reproduces natural surround

sound and clear vocal orientation.

2

All of internal status and variables are controlled by I C

BUS interface.

I

PACKAGE OUTLINE

NJW1136GL1

NJW1136L

I

FEATURES

8 to 13V

G

Operating Voltage

NJW1136D

G

3ch Output(Lch, Rch, Subwoofer ch) / 2ch Output(Lch, Rch)

G

LPF Filter (Adjustable cut off frequency by external parts)

G

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

2

Adjustable AGC boost level by external parts and AGC compression level by I C BUS

G

eala(NJRC Original Surround System)

G

Simulated Stereo

2

G

I C BUS Interface

G

Bi-CMOS Technology

SOP32, DIP32

G

Package Outline

I

BLOCK DIAGRAM

AGC1

SS-FIL

TONE TONE

-Ha -La LF1 LF2 LF3

OUTa

SCL SDA ADR

IN a

VOL1

TONE

VOL2

I

2

CBUS

Interface

AGC

eal a

&

Simulated

Stereo

CVA

CVB

CVW

CTH

CTL

CSR

PORT1

PORT0

AUX1

AUX0

LPF

VOL2

Trimmer

IN b

VOL1

TONE

VOL2

Bias

GND

V+

AGC2

SR-FIL

TONE TONE

-Hb -Lb

OUTb

OUTw

Vref

(1/24) G

next

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