- 10 -
SCHEMATIC DIAGRAM
UD-503
UD-503
1
2
3
4
5
6
7
8
A
B
C
D
E
Z
ANALOG PCB (3/5)
13mA
0.9m
A
13mA
0.25mA
From PCB,AIN
FOR U511
AIN_RP
AIN_RN
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
P10V_R
N10V_R
P10V_R
D3P3V
N10V_R
GND
GND
GND
P10V_R
GND
GND
D3P3V
P10V_R
N10V_R
GND
GND
P10V_R
N10V_R
GND
GND
GND
GND
GND
SDATA1
1
LRCK1
1
1
1
K
C
B
1
1
K
C
M
DAC_MC1
1
DAC_MDI1
1
DAC_MS1
1
N_DAC_RST1
1
VOL_CS1
1
SCKV1
1
SDOV1
1
RPA 5
RNA 5
P5V_R 1
AIN_R
1
R792
100(1/4W,3216)
R594
1.5k(F,2125)
R597
1.5k(F,2125)
R783
3.9k(F,2125)
R520
47
C608
0.1u
R606
18k(F)
+
C568
47u/16V
R577
180
R607
10k(F)
R584
47
+
C607
100u/10V(TCFG)
R591
1.5k(F,2125)
+
C605
100u/25V(KMG)
+
C599
47u/16
V
R782
3.9k(F,2125)
+
C577
100u/25V(ME-AX)
U515
NJM7805DL1A
OUT
3
IN
1
GN
D
2
TP537
PAD
1
1
R608
100(1/4W,3216)
R604
0
+
C579
47u/16V
R590
1.5k(F,2125)
+
C600
100u/10V(TCFG)
R598
100(1/4W,3216)
R578
180
R602
10k
C571
10u/6.3V (1608)
TP504
PAD
C586
560p(ECHU)
R585
47
C574
0.1u(1608)
R589
1.0k(F,2125)
P508
B6B-ZR
1
2
3
4
5
6
+
C581
100u/25V(ME-AX)
U514
TL431IPK
2
3
1
C585
560p(ECHU)
C569
0.1U
C572
0.1u(1608)
R579
180
C647
0.1u
R601
N.M.(0)
R785
3.9k(F,2125)
C674
0.1u
C584
2700p/16V(ECHU)
U512
TL431IPK
2
3
1
R588
1.0k(F,2125)
R592
1.5k(F,2125)
R603
N.M
+
-
U511B
MUSES8820E
5
6
7
R600
10K(F)
C576
0.1u(ECHU)
R586
1.5k(F,2125)
C580
0.1u(ECHU)
R599
18k(F)
C598
0.1u(1608)
+
-
V+
V-
U511A
MUSES8820E
3
2
1
8
4
+
C587
100u/25V (KMG)
R587
1.5k(F,2125)
C578
0.1u(1608)
R526
47
C651
0
+
C602
100u/25V(KMG)
+
C593
100u/25V(ME-AX)
R519
47
C591
560p(ECHU)
+
C588
100u/25V(ME-AX)
U513
NJW1195A
INA1
1
INA2
2
INA3
3
INA4
4
INB1
32
INB2
31
INB3
30
INB4
29
OUT1A
8
OUT1B
25
OUT2A
12
OUT2B
21
DCCAP1
A
6
DCCAP1
B
27
DCCAP2
A
10
DCCAP2
B
23
V+
18
V-
17
VDDOUT
13
GND0
5
GND1
7
GND2
9
GND3
11
GND4
24
GND5
26
GND6
28
ADR0
19
ADR1
20
DATA
14
CLOCK
15
LATCH
16
DIFF
22
C582
0.1u(1608)
R596
1.5k(F,2125)
+
C573
47u/16V
+
C589
100u/25V (KMG)
C606
0.1u(1608)
+
C604
47u/16
V
AK4490
U510
NC
1
PDN
2
BICK/DCLK/BCK
3
SDATA/DSDL/DINL
4
LRCK/DSDR/DINR
5
SSLOW/WCK
6
SMUTE/CSN
7
SD/CCLK/SCL
8
SLOW/CDTI/SDA
9
DIF0/DZFL/STO
10
DIF1/DZFR/TSTO
11
DIF2/CAD0
12
PSN
13
I2C
14
DEM0
15
DEM1
16
ACKS/CAD1
17
NC
18
VREFHR
19
VREFHR
20
VREFLR
21
VREFLR
22
VCMR
23
AUTRP
25
AUTRN
26
VDDR
27
VDDR
28
VSSR
29
VSSR
30
VSSL
31
VSSL
32
VDDL
33
VDDL
34
AOUTLN
35
AOUTLP
36
NC
37
VCML
38
VREFLL
39
VREFLL
40
VREFHL
41
VREFHL
42
NC
43
AVDD
44
AVSS
45
MCLK
46
DVSS
47
DVDD
48
NC
24
R576
180
C592
560p(ECHU)
+
C646
22u/16V
C590
2700p/16V(ECHU)
+
C597
100u/25V(KMG)
+
C601
100u/25V(KMG)
R784
3.9k(F,2125)
+
C645
22u/16V
R595
1.0k(F,2125)
R791
100(1/4W,3216)
R593
1.0k(F,2125)
+
C583
47u/16V
R527
47
