37
150B LCD
2 V/div AC
1 uS/div
13 7502-55
2 V/div AC
0.5 uS/div
12 7502-54
11 7502-12
2 V/div AC
10 uS/div
11 7502-20
2 V/div AC
10 uS/div
11 7502-28
2 V/div AC
10 uS/div
2 V/div AC
5 uS/div
14 7502-56
2 V/div AC
5 uS/div
15 7502-57
2 V/div AC
5 uS/div
16 7502-58
ADC & Clock Schematic Diagram & Waveforms
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+5VD
DRAIN[0..7]
DRAIN2
R6
1501
HEAD-2.54-4X1
NI
1
2
3
4
G2
3512
4K7/
0805
NI1
2
CLP-CPU
5
2523
10N
/0
805
2511
12P/0805
1
2
3523
22R/ARV241
1
8
2
7
3
6
4
5
HS-ADC
2518
100N/0805
2519
10N
/0
805
2537
1U/0805
3514
0R
/0
805
NI
1
2
DRAIN0
DBAIN6
2526
10N
/0
805
2533
100N/0805
PLLCLK
DGAIN7
2538
1N/0805
3508
10K/0805
1
2
DBAIN7
5503
BEAD/1206
1
2
351
1
4K7/
0805
NI
1
2
2535
150P
1
2
IICSDA
G4
+5VP
DBAIN3
B7
5505
BEAD/1206
1
2
THERMO
DGAIN3
B6
G0
3503
10R/0805
1
2
DGAIN2
SCL
2536
39N
1
2
3519
47R/0805
1
2
GND
VS-CPU
G1
2522
10N
/0805
5504
BEAD/DIP
1
2
GMZ2-HS
DGAIN4
3501
2K2/0805
1
2
GND
B4
+5VP
5
+5VC
R2
3509
10K/
0805
1
2
HS-CPU
+5VD
GMZ2-HS
2524
22N
/0
805
IICSCL
GIN
GND
DBAIN2
2514
100N/0805
2508
100N/0805
3507
10R/0805
1
2
NEAR 8752
2525
4N
7/
0805
G5
B5
7503
TC7SH08FU
1
2
3
4
5
INB
INA
GND OUT
VCC
2540
100N/0805
+5VP
+
2510
10U
/1
6V/
RV2
+5VA
2546
100N/0805
DGAIN0
B0
2543
100N
/0805
3513
220R/0805
1
2
2504
100N
/0805
2505
10N
/0
805
HS-ADC
2527
10N
/0
805
IICSCL
3527
0R/0805
1
2
+5VP
DGAIN5
3504
75R/0805
1
2
+5VD
3526
100R
/0
805
1
2
2529
4N
7/
0805
3520
22R/ARV241
1
8
2
7
3
6
4
5
3521
22R/ARV241
1
8
2
7
3
6
4
5
SDA
3515
3R3/0805
1
2
2501
1N
/0
805
7502
TDA8752/8
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
NC
DEC2
VREF
DEC1
NC
RAGC
ROBT
RGAINC
RCLP
RDEC
VCCAR
RIN
AGNDR
GAGC
GOBT
GGAINC
GCLP
GDEC
VCCAG
GIN
AGNDG
BAGC
BOBT
BGAINC
BCLP
BDEC
VCCAB
BIN
AGNDB
NC
NC I2
C/
3W
ADD1 ADD2 TCK TDO DI
S
SEN SD
A
VDDD VSSD SC
L
NC NC RO
R
GOR BOR O
G
NDB
B0 NC
NC
B1
B2
B3
B4
B5
B6
B7
VCCOB
OGNDG
G0
G1
G2
G3
G4
G5
G6
G7
VCCOG
OGNDR
R0
R1
R2
R3
R4
R5
R6
R7
VCCOR
CKREFO
CKAO
O
G
NDP
LL
CKBOU
T
CKAOU
T
VCCO
_P
LL
DG
ND
OE
PW
OF
F
CL
P
HSYN
C
IN
V
CKEXT
CO
AST
CK
RE
F
VCCD
AG
NDP
LL
CP
CZ
VCCA
_P
LL
NC
K
A
R
7501
TL431/TO92
3
2
1
6501
SB140
NI
1
2
5506
BEAD/1206
1
2
DRAIN3
+5VD
+5VC
3524
22R/ARV241
1
8
2
7
3
6
4
5
3517
100R/0805
1
2
2521
4N
7/
0805
DBAIN[0..7]
DBAIN0
R0
2509
100N/0805
2539
1U/0805
+5VD
RIN
R3
3516
0R/0805
1
2
GND
HS-CPU
R5
2507
12P/0805
1
2
THERMO
G3
2520
22N
/0
805
2512
100N/0805
GND
R7
2528
22N
/0805
+5VD
DBAIN5
DGAIN1
2530
10N
/0805
3502
75R/0805
1
2
DBAIN4
3518
47R/0805
1
2
3510
100R
/0
805
1
2
5
IICSDA
B1
2515
12P/0805
1
2
3505
10R/0805
1
2
3506
75R/0805
1
2
2541 100N/0805
+5VP
BIN
RIN
BIN
3525
22R/ARV241
1
8
2
7
3
6
4
5
DGAIN6
R4
DRAIN1
G6
2542 100N/0805
R1
2506
1N5/0805
GIN
VS-CPU
3522
22R/ARV241
1
8
2
7
3
6
4
5
B2
2516
100N/0805
1
2
DGAIN[0..7]
PLLCLK
+
2502
47U
/16V/
RV2-6X5
2545
1N/0805
B3
+
2503
47U
/16V/
RV2-6X5
CLP-CPU
DBAIN1
G7
11
11
12
15
13
14
16
11
DRAIN7
DRAIN6
DRAIN5
DRAIN4