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
2
NJW1145GK1
I C BUS interface.
s
FEATURES
q
Operating Voltage
8 to 13V
2
q
I C 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.
2
q
Variable AGC Compression Level via I C (4-levels)
q
NJRC Surround "eala" and Simulated Surround
2
q
Variable Surround Effect Level via I C
q
Low Noise VCA
q
Bi-CMOS Technology
q
Package Outline
SOP40-K1
s
BLOCK DIAGRAM
MONa
AGC
TONE TONE
-Ha
-La
OUTa
-2dB
+4.5dB
IN1a
IN2a
IN3a
IN4a
IN5a
IN6a
SDA
SCL
CVA
CVB
CTH
CTL
CSR
CSB
SEL
VOL1
NJRC
Surrond
鈥渆ala鈥?/div>
&
Sim ulated
Stereo
VOL1
-2dB
BBE
TONE
VOL2
I C BUS
Interface
2
AGC
IN1b
IN2b
IN3b
IN4b
IN5b
IN6b
SEL
BBE
TONE
VOL2
Bias
GND
Vcc
+4.5dB
MONb
TONE TONE
-Hb
-Lb
OUTb
Vref
-1-
next