NJW1143 Datasheet, PDF (1/17 Pages) New Japan Radio – AUDIO PROCESSOR

NJW1143
AUDIO PROCESSOR
s GENERAL DESCRIPTION
The NJW1143 is an audio processor which includes volume,
balance, tone control, surround, simulated stereo and AGC
function.
Also the NJW1143 features high precision characteristics about
channel balance, it is less than ±1.0dB at –70dB attenuation.
All of internal status and variables are controlled by I²C BUS.
Selectable 4-slave address is applicable to multi-speaker system.
It is suitable for any TV set.
s PACKAGE OUTLINE
NJW1143M
s FEATURES
q Operating Voltage
8 to 13V
q I²C BUS Interface
(Fast mode applicable, Selectable 4-Slave address, 3V I/F applicable)
q Low Output Noise
q AGC Circuit (Selectable 4-stage compression level via I²C BUS)
q "eala" (NJRC Surround)
q Simulated Surround
q Bi-CMOS Technology
q Package Outline
DMP24
s BLOCK DIAGRAM
AGC
SRFIL
TONE TONE
-Ha -La
OUTa
INa
VOL1
TONE
VOL2
AGC
e ala
&
Sim ulate
Stere o
INb
VOL1
TONE
VOL2
I²C Bus
Interface
Bias
CVO
CBA
CTH
CTL
CSR
AUX0
AUX1
ADR0
ADR1
SCL
SDA
V+
GND
TONE TONE
-Hb -Lb
OUTb Vref
-1-