AUDIO PROCESSOR
NJW1167/A
AUDIO PROCESSOR with Subwoofer Output
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s GENERAL DESCRIPTION The NJW1167/A is a sound pro...
Description
NJW1167/A
AUDIO PROCESSOR with Subwoofer Output
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s GENERAL DESCRIPTION The NJW1167/A is a sound processor with subwoofer output includes all of functions processing audio signal for TV, such as tone control, balance, volume, mute, and AGC functions. Also the NJW1167/A includes the LPF for subwoofer output and bass boost function. The 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
NJW1167V
NJW1167AL
s FEATURES q Operating Voltage 7.5 to 13V NJW1167FJ2 q 3ch Output(Lch, Rch, Subwoofer ch) / 2ch Output(Lch, Rch) q LPF Filter (Adjustable cut off frequency by external parts) q AGC Circuit (It reduces volume difference among input sources.) 2 Adjustable AGC boost level by external parts and AGC compression level by I C BUS q eala(NJRC Original Surround System) q Simulated Stereo 2 q I C BUS Interface q Bi-CMOS Technology q Package Outline NJW1167: SSOP32, QFP32-J2 NJW1167A: SDIP32
s BLOCK DIAGRAM
AGC1 SS-FIL
TONE TONE -Ha -La LF1 LF2 LF3
OUTa
SCL SDA ADR
IN a
VOL1
TONE
VOL2
I2 CBUS Interface
AGC
eal a & Simulated Stereo
CVA CVB CVW CTH CTL CSR PORT1 PORT0 AUX1 AUX0
LPF
VOL2
Trimmer
IN b
VOL1
TONE
VOL2 Bias
GND V+
AGC2
SR-FIL
TONE TONE -Hb -Lb
OUTb
OUTw
Vref
-1-
NJW1167/A
sPIN CONFIGURATION SSOP32, SDIP32
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INa SR-FIL SS-FIL TONE-Ha TONE-La ...
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