PRELIMINARY
NJW1146
Audio Processor with BBE
s
GENERAL DESCRIPTION
NJW1146
is an audio processor with BBE, which also includes Master
volume, Balance, Tone Control, eala(original surround), Mute, and Output
2
filter amplifier. All of internal status and variables are controlled by I C
BUS.
s
FEATURES
q
Operating Voltage
2
q
I C Bus interface
q
BBE
q
eala & simulated stereo
q
Master Volume
q
Balance
qTone
Control
q
Bi-CMOS
q
Package Outline
8 to 10 V
0 to +15dB(0.5dB/step)
0 to -80dB, MUTE(0.33dB/step)
0 to -30dB, MUTE(1dB/step)
-15 to +15dB(0.5dB/step)
SDMP30
s
PACKAGE OUTLINE
NJW1146M
s
BLOCK DIAGRAM
TONE-Ha
TONE-La
BBE-Ha
BBE-La
eala Fil
OUTa
LFINa
LFOUTa
AGC
SCL
SDA
Ina
AGC
Vol1
BBE
Tone
Vol2
Buffer
CBH
CBL
CVA
CVB
CTH
CTL
CSR
Inb
Vol1
BBE
Tone
Vol2
Buffer
I
2
C Bus Interface
eala
Bias
V+
GND
TONE-Hb
TONE-Lb
BBE-Hb
BBE-Lb
LFOUTb
OUTb
LFINb
Vref
鈥?鈥?/div>
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