NJW1298
Ver 2.0 for web
8-CHANNEL ELECTRONIC VOLUME WITH INPUT SELECTOR
GENERAL DESCRIPTION
PACKAGE OUTLINE
The NJW1298 is a 8-channel electronic volume with
Input Selector. It includes 13-in 4-out stereo audio
selector , REC Output and Multi-channel inputs.
The NJW1298 performs low noise and low distortion
characteristics with resistance ladder circuit.
All of functions are controlled via three-wired serial bus.
Selectable 2-Chip address is available for using two chips
on same serial bus line.
The NJW1298 is suitable for multi-channel audio system,
such as AV amplifier, DVD receiver, and others.
FEATURES
Operating Voltage ±4.5 to ±7.5V
3-Wired Serial Control Chip Address Select Function
13-input 4-output stereo selector
Multi-Channel input (8ch x 2)
Input Selector Gain Control Gain : 0 to -21dB / 3dB step
Volume +31.5 to –95dB / 0.5dB step, Mute
SWch, Cch, LS/RSch output addition to L/R ch output
LB/RBch output addition to LS/RS ch output
Zero Cross Detection
Bi-CMOS Technology
Package Outline QFP100-U1
BLOCK DIAGRAM
NJW1298FU1
REC A
REC C
+
Stereo Lin
(×13)
Multi-Li
Multi-Ri
Lout for
ADC
Multi-Cin
Multi-LSin
Multi-RBin
Multi-SWin
Multi-RSin
Multi-LBin
Control Logic
+
REC A
REC C
Stereo Rin
(×13)
Lout
Rout
Cout
LSout
RSout
LBout
RBout
SWout
LatchADR Mute
Main Volume:
+31.5 to -95dB/0.5dB step
Input Selector Gain:
0 to -21dB / 3dB step
DataClock
Zero Cross Detection (8ch)
REC B
REC B
Input SelectorInput Selector
Rout for
ADC
Ma in
REC_C
REC_B
REC_A
Ma in
REC_C
REC_B
REC_A
Main
REC_C
REC_B
REC_A
Main
REC_B
REC_A
REC_C
AVR3600 harman/kardon
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