NJW1145 Datasheet, PDF (1/24 Pages) New Japan Radio – AUDIO PROCESSOR

NJW1145
AUDIO PROCESSOR
s GENERAL DESCRIPTION
s PACKAGE OUTLINE
The NJW1145 is a audio processor with sound
enhancement (BBE). It includes all of the functions
processing audio signal for TV, such as tone control,
balance, volume, mute, and AGC functions.
Also the NJW1145 performs surround and sound
enhancement. The sound enhancement regenerates high
definitive and nearly real sound.
All of the internal status and variables are controlled by
I²C BUS interface.
NJW1145GK1
s FEATURES
q Operating Voltage
8 to 13V
q I²C BUS Interface
q BBE Sound Enhancement (Low Boost and High Boost: 15dB max.)
q Internal 6 Input Audio Selectors and Monitor Output
q The AGC circuit reduces volume difference among input sources.
q Variable AGC Compression Level via I²C (4-levels)
q NJRC Surround "eala" and Simulated Surround
q Variable Surround Effect Level via I²C
q Low Noise VCA
q Bi-CMOS Technology
q Package Outline
SOP40-K1
s BLOCK DIAGRAM
IN1a
IN2a
IN3a
IN4a
IN5a
IN6a
IN1b
IN2b
IN3b
IN4b
IN5b
IN6b
MONa AGC
SEL
VOL1
AGC
SEL
VOL1
M ONb
NJRC
Surrond
“e ala”
&
Sim ulated
Stere o
TONE TONE
-Ha -La
OUTa
BBE
TONE
VOL2
BBE
TONE
VOL2
I²C BUS
Interface
SDA
SCL
CVA
CVB
CTH
CTL
CSR
CSB
Bias
GND
V cc
TONE TONE
-Hb -Lb
OUTb
Vref
-1-