NJW1176 데이터 시트보기 (PDF) - Japan Radio Corporation

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NJW1176

AUDIO PROCESSOR with Subwoofer Output

Japan Radio Corporation  

NJW1176

AUDIO PROCESSOR with Subwoofer Output

s GENERAL DESCRIPTION

The NJW1176 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 NJW1176 includes the LPF for subwoofer output

and bass boost function.

The original surround system reproduces natural surround

sound and clear vocal orientation.

All of internal status and variables are controlled by I2C

BUS interface.

s PACKAGE OUTLINE

NJW1176L

NJW1176M

s FEATURES

q Operating Voltage

7.5 to 13V

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

q LPF Filter (Adjustable cut off frequency by external parts)

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

Adjustable AGC compression level by I2C BUS

q eala(NJRC Original Surround System)

q Simulated Stereo

q I2C BUS Interface

q Bi-CMOS Technology

q Package Outline

SDIP30, SDMP30, SSOP32

NJW1176V

s BLOCK DIAGRAM

AGC

SUR TONETONE TONE

SUR -FIL OUTa INa -Ha -La LF1 LF2 LF3 OUTa

SCL SDA

IN a

IN b

VOL1

AGC

VOL1

eala

&

Simulated

Stereo

TONE

VOL2

LPF

VOL2

Trimmer

TONE

VOL2

I2CBUS

Interface

CVA

CVB

CVW

CTH

CTL

Bias

AUX1

AUX0

GND

V+

SUR TONE TONE TONE

O-UTb -INb -Hb -Lb

OUTb

OUTw

Vref

-1-

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