NJW1138
P R E L I M I N A LY
AUDIO PROCESSOR
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s GENERAL DESCRIPTION The NJW1138 is an audio process...
NJW1138
P R E L I M I N A LY
AUDIO PROCESSOR
www.datasheet4u.com
s GENERAL DESCRIPTION The NJW1138 is an audio processor. It includes all of functions processing audio signal for TV, such as tone control, balance, volume, mute, NJRC original surround, and AGC functions. The NJRC 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.
s PACKAGE OUTLINE
NJW1138L
NJW1138M
s FEATURES q Operating
Voltage 8 to 13V 2 q I C BUS Interface q AGC Circuit (It reduces volume difference among input sources.) q eala(NJRC Original Surround) q Simulated Surround q Bi-
CMOS Technology q Package Outline SDIP30, SDMP30 s BLOCK DIAGRAM
VOL1
TONE
VOL2
AGC
eala & Sim ulated Surround
I2C Bus Interface
VOL1
TONE
VOL2 Bias
- 1 –F
NJW1138
s PIN FUNCTION
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
INa NC NC OUT1a IN2a TONE-Ha TONE-La OUT2a AGC SS-FIL CVB CVA SDA SCL GND
INb NC NC OUT1b IN2b TONE-Hb TONE-Lb OUT2b SR-FIL VREF CTH CTL AUX0 AUX1 Vcc
30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
No.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Symbol
IN1a NC NC OUT1a IN2a TONE-Ha TONE-La OUT2a AGC SS-FIL CVB CVA SDA SCL GND Ach Input Non Connect Non Connect
Function
No
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Symbol
Vcc AUX1 AUX0 CTL CTH VREF SR-FIL OUT2b TONE-Lb TONE-Hb IN2b OUT1b NC NC IN1b Power Supply Pin Auxiliary Output1 Auxiliary Output0
Function
Ach Output for ...