PRELIMINARY
NJW1197A
8-CHANNEL ELECTRONIC VOLUME WITH INPUT SELECTOR
s GENERAL DESCRIPTION NJW1197A is a n 8- channel el ectronic v olume IC. It includes I nput s elector, to ne c ontrol, v olume, mute, input selector ga in c ontrol, v olume output ga in c ontrol an d 5 REC outputs. Each m ode and c onditions ar e s et by the 3-wired serial control data. NJW1197A improves lo w R esidual O utput No ise Voltage compared with NJW1197. s FEATURES q Operating Voltage q 3-Wired Serial Control q Inpu.
8-CHANNEL ELECTRONIC VOLUME
PRELIMINARY
NJW1197A
8-CHANNEL ELECTRONIC VOLUME WITH INPUT SELECTOR
s GENERAL DESCRIPTION NJW1197A is a n 8- channel el ectronic v olume IC. It includes I nput s elector, to ne c ontrol, v olume, mute, input selector ga in c ontrol, v olume output ga in c ontrol an d 5 REC outputs. Each m ode and c onditions ar e s et by the 3-wired serial control data. NJW1197A improves lo w R esidual O utput No ise Voltage compared with NJW1197. s FEATURES q Operating Voltage q 3-Wired Serial Control q Input Selector (x 11) q REC Output (x 5) q Input Selector Gain Control q Volume Output Gain Control s PACKAGE OUTLINE
NJW1197AFC2
±4.5 to ±7.5V Chip Address Select Function
Independent Mute function Gain : 0/-3/-6/-9/-12dB Gain : 0/+12/+13/+14/+15/+16/+17/+18dB (L,R,C,LS,RS,LB,RBch) G ain : 0/+22/+23/+24/+25/+26/+27/+28dB (SWch) Independent Control: L,Rch / Cch / LS,RSch / LB,RBch / SWch q Volume 0 to -100dB/0.5dBstep, MUTE q Residual Output Noise Voltage -114dBV typ. @Volume=-95dB (Output Noise 3) q Tone Control 0 to ±10dB/1dBstep q Subwoofer output addition to L, R channel output q Subwoofer output ON/OFF control q Bi-CMOS Technology q Package Outline QFP100-C2
RECA1R RECA2R RECA3R RECA2L RECA3L RECA4L RECA4R LAIN RAIN CAIN LSAIN RSAIN LBAIN RBAIN SWAIN RECA1L RECB1L RECB1R
s BLOCK DIAGRAM
Multi-Channel Input A
Supply Voltage µCOM Interface
V+ GND VLATCH DATA CLOCK MUTE ADR
L1IN R1IN L2IN
Volume
DCLA1 DCLA2
Multi-channel TONE TSW SW
LOUT
R2IN L3IN R3IN L4IN R4IN L5IN R5IN L6IN.