WX-850BT/900BT/900BTM
42
IC402 BD3468FV-E2
A1 1
INPUT SELECTOR
(1 SINGLE-END AND 5 STEREO ISO)
SUB GAIN
ADJUST
I2C BUS
LOGIC
2ND ORDER LOW-PASS FILTER
INPUT GAIN
OUTC
40
A2 2
BP1 3
BP2 4
CP1 5
CN 6
CP2 7
ISO
GND
AMP
ISO
GND
AMP
ISO
GND
AMP
ISO
GND
AMP
DP1 8
DN 9
DP2 10
ISO
GND
AMP
ISO
GND
AMP
EP1 11
EN 12
EP2 13
ISO
GND
AMP
ISO
GND
AMP
FP1 14
FN1 15
ISO
GND
AMP
FN2 16
FP2 17
MIN 18
BN 19
HIVOLB 20
ISO
GND
AMP
OUTS
39
OUTR1
38
OUTR2
37
OUTF1
36
OUTF2
35
INF2
34
IG1
28
IG2
27
VCCL
26
INF1
33
INR2
32
INR1
31
INS
30
INC
29
FADER
ATT
FADER
ATT
FADER
ATT
LEVEL
SHIFT
LEVEL
SHIFT
FADER
ATT
FADER
ATT
FADER
ATT
FADER
BOOST
FADER
BOOST
FADER
BOOST
FADER
BOOST
FADER
BOOST
FADER
BOOST
+
+
VREF
REG (4.15V)
25
GND
24
SDA
23
SCL
22
VCCH
21
LEVEL
SHIFT
LEVEL
SHIFT
LEVEL
SHIFT
LEVEL
SHIFT
MAIN GAIN
ADJUST
FRONT
SELECTION
REAR
SELECTION
SUB
SELECTION
IC501 BU4228F-STR
–
+
VDD 2
GND 1
VOUT
4
CT
3
VREF
IC803 BD49100RFS-E2
EN 2
ECO 4
ADJ5 1
40 N.C.
37 GND4
43 VIN0
42 BCAP
44 GATE5
39 HSW2
LD4EN 3
ERR1 5
VOUT4 20
TIMER 19
VOCAL 18
CLCAL 17
VIN4 16
FB1 22
INV1 21
LDO5
(CONTROLLER)
TIMER
LATCH
INTERNAL
REGULATOR
HSIDE
SW2
38 HSW1
36 SW2
35 FB2
33 VOUT0
30 VOUT1
34 INV2
32 VIN1
31 ADJ1
HSIDE
SW1
LDO1
26 VIN2
28 VOUT2
27 GND3
29 ADJ2
25 SNSH
24 SNSL
23 GATE1
LDO2
LDO4
(CALIBRATE)
VIN3 15
ADJ3 14
RT 11
VOUT3 13
GND2 12
SYNC 9
GND1 10
ERR2 6
LDO3
TSD
SCL 8
SDA 7
I2C
I/F
OSC
DCDC2
DCDC1
(CONTROLLER)
OVP
41 VINSW
L_DET
UVLO
BU_SW
BU_CONT
STB_LDO
Summary of Contents for WX-850BT
Page 61: ...MEMO WX 850BT 900BT 900BTM 61 ...