Harman Kardon AVR 1600, Руководство по обслуживанию

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NJW1197C
8-CHANNEL ELECTRONIC VOLUME WITH INPUT SELECTOR
„
GENERAL DESCRIPTION
„
PACKAGE OUTLINE
NJW1197C
is an 8-channel electronic volume IC. It
includes Input selector, tone control, volume, mute, input
selector gain control, volume output gain control and 5
REC outputs. Each mode and conditions are set by the
3-wired serial control data.
NJW1197C
improves low Residual Output Noise
Voltage compared with
NJW1197
.
„
FEATURES
●
Operating Voltage ±4.5 to ±7.5V
●
3-Wired Serial Control Chip Address Select Function
●
Input Selector (x 11)
●
REC Output (x 5) Independent Mute function
●
Input Selector Gain Control Gain : 0/-3/-6/-9/-12dB
●
Volume Output Gain Control Gain : 0/+1/+2/+3/+4/+5/+6/+7dB (L,R,C,LS,RS,LB,RBch)
Gain : 0/+1/+2/+3/+4/+5/+6/+10dB (SWch)
Independent Control: L,Rch / Cch / LS,RSch / LB,RBch / SWch
●
Volume 0 to -100dB/0.5dBstep, MUTE
●
Residual Output Noise Voltage -114dBV typ. @Volume=-95dB (Output Noise 3)
●
Tone Control 0 to ±10dB/1dBstep
●
Subwoofer output addition to L, R channel output
●
Subwoofer output ON/OFF control
●
Bi-CMOS Technology
●
Package Outline QFP100-C2
„
BLOCK DIAGRAM
NJW1197CFC2
Multi-Channel In
put A
RE
CA
1
L
RE
CA
2
L
RE
CA
1
R
RE
CA
3
L
RE
CA
2
R
RE
CB
1
L
RE
CB
1
R
R1IN
FL+ FL-
CB
IN
LSBIN R
SBIN
LBBIN
R
BBIN
SW
BIN
GND
V+
V-
LATCH
DATA
CLOCK
Supply
Voltage
µ
COM
Interface
FR+ FR-
Volume
Output
Gain
LOUT
ROUT
COUT
LSOUT
RSOUT
SWOUT
RE
CA
4
L
RE
CA
3
R
RE
CA
4
R
L1IN
L2IN
L3IN
L4IN
L5IN
L6IN
L7IN
R2IN
R3IN
R4IN
R5IN
R6IN
R7IN
L8IN
R8IN
CAIN
LSAIN
RSAIN
LBAIN
RBAIN
SWAIN
Input Selector
Gain
DCLA1
S
SW
TONE
TONE
FIL_TR FIL_BR1 FIL_BR2 FIL_TL FIL_B
L1
FIL_B
L2
DCLA2
DCRA1DCRA2
Multi-Channel Input B
2 Channel In
put
Input Selector
Multi-channel
Volume
LBOUT
RBOUT
LAIN
RAIN
LBIN
RB
IN
L9IN
R9IN
L10IN
R10IN
L11IN
R11IN
REC Output
Selector
SSW
BSW
TSW
MUTE
L
S
CIN
L
B
CIN
RB
CI NRS
CIN
Multi-Channel Input C
Input Selector
Gain
ADR
AVR1600
harman/kardon
83