NJW1176
AUDIO PROCESSOR with Subwoofer Output
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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.
2
All of internal status and variables are controlled by I C
BUS interface.
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PACKAGE OUTLINE
NJW1176L
NJW1176M
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FEATURES
7.5 to 13V
q
Operating Voltage
q
3ch Output (Lch, Rch, Subwoofer ch) / 2ch Output(Lch, Rch)
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LPF Filter (Adjustable cut off frequency by external parts)
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AGC Circuit (It reduces volume difference among input sources.)
2
Adjustable AGC compression level by I C BUS
q
eala(NJRC Original Surround System)
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Simulated Stereo
2
q
I C BUS Interface
q
Bi-CMOS Technology
SDIP30, SDMP30, SSOP32
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Package Outline
NJW1176V
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BLOCK DIAGRAM
AGC
SUR TONETONE TONE
SUR - FIL OUTa INa -Ha -La LF1 LF2 LF3
OUTa
SCL SDA
IN a
VOL1
TONE
VOL2
AGC
eala
&
Simulated
Stereo
I
2
CBUS
Interface
CVA
CVB
CVW
CTH
CTL
LPF
VOL2
Trimmer
IN b
VOL1
TONE
VOL2
Bias
AUX1
AUX0
GND
V+
SUR TONE TONE TONE
OUTb -INb -Hb -Lb
-
OUTb
OUTw
Vref
-1-