
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
A A
B B
C C
D D
GAIN
ADJUST
GAIN
SELECT
DAC REFERENCE
QUAD DAC
VSS GENERATOR
A/D
INSTRUMENT
AMPLIFIER
DAC SWITCHES
SHORTED TOGETHER
A/D INPUT MUX
OFFSET
ADJUST
DAC0 BUFFER
NEAR ADC
GUARD
Wednesday, July 10, 1996
FILE: 425-3.SCH C
ANALOG SECTION, 425 BOARD
SENSORAY COMPANY, INCORPORATED
B
3 7
Title
Size Document Number Rev
Date: Sheet of
DC-DC_CONVERTERS
425-4.SCH
+5V +15V
-15V
AGNDDGND
SH
SHSH SH0
SH1
CH0 SH2
CH1 SH3
CH2 SH4
SH5
SH6
SH7
SLSL SL0
SL1
CH0 SL2
ADOUT CH1 SL3
CH2 SL4
ADCS* SL5
SL6
SL7
ADCLK
ADCLK
ADCLK
UNI*
SH0
-5V
-5V
-5V
SH1
SH2
SH3
SH4
SH5
SH6
UBUF0
UBUF0
UBUF0
SH7
PH1
PH2 SL0
PH3 SL1
SL2
EDAC*EDAC* SL3
SL4
SL5
SL6
SL7
PH0
AFB0
PH1
D0 AOH0AOH0 PH2
D1
AOH1
AOH1AOH1 PH1 PH3
D2
AOH2
AOH2AOH2 PH2
D3
AOH3
AOH3AOH3 PH3
D4
D5
D6
D7
A1
A2
WR*
LDAC*
VREF10
CSLSB*
CSMSB*
-5V
VREF10
CH[0..2]
D[0..7]
A[1..2]
+15V
+15V
+5VVCC
-15V
-15V
+15V
+5V
-15V
+15V
+5V
-15V
+15V
+5V
+15V
+15V
+5V
+15V
-15V
+15V
+15V
-15V
+5V
+15V
-15V
+5V
+15V
-15V
-15V
R8
*
C47 C26
0.1uF
C32 C63
C5
0.1uF
C68
0.1uF
U3
MAX191
10
11
13
14
15
16
17
18
20
19
21
9
22
8
1
3
4
5
6
24
12 7
2
23
D0/D8
D1/D9
D2/D10
D3/D11
D4
D5/SSTRB
D6/CKOUT
D7/DOUT
CS
RD
HBEN
BUSY
PAR
BIP
PD
AIN+
AIN-
VREF
REFADJ
VDD
DGND AGND
VSS
CLK/SCLK
U24
MAX526
16
15
14
13
12
11
10
9
18
17
20
8
21
22
7 5
4
23
3
24
1
2
6
19
D0/D8
D1/D9
D2/D10
D3/D11
D4
D5
D6
D7
A0
A1
WR
LDAC
CSLSB
CSMSB
DGND AGND
VSS
VDD
VOUTA
VOUTD
VOUTC
VOUTB
VREFAB
VREFCD
R14
220
C70
0.1uF
C14
0.01uF
U11
AD620
18
2
3
45
6
7
RGRG
-IN
+IN
-VSREF
OUT
+VS
U26
DG445
1
8
9
16
3
6
11
14
2
7
10
15
5
12
4
13
E0
E1
E2
E3
S0
S1
S2
S3
S0
S1
S2
S3
GND
VL
V-
V+
U28
DG444
1
8
9
16
3
6
11
14
2
7
10
15
5
12
4
13
E0
E1
E2
E3
S0
S1
S2
S3
S0
S1
S2
S3
GND
VL
V-
V+
C80
0.1uF
R13
75K
C43
470pF
R3
10
+
-
U21
LT1007
3
2
6
7
1
4
8
U34
AD587
2
3
1
4
6
7
5
8
VIN
NC
NC
AGND
VOUT
NC
TRIM
FILT
C59
0.1uF
C4
10uF,6V
C6
0.1uF
C13
4.7uF,10V
U15
508
4
5
6
7
12
11
10
9
8
1
16
15
2
14
13
3
X0
X1
X2
X3
X4
X5
X6
X7
Y
A
B
C
E
AGND
VDD
VSS
U19
508
4
5
6
7
12
11
10
9
8
1
16
15
2
14
13
3
X0
X1
X2
X3
X4
X5
X6
X7
Y
A
B
C
E
AGND
VDD
VSS
R5
330K
C42
0.1uF
C19
0.1uF
C22
0.1uF
C38
0.1uF
C39
0.1uF
Q1
2N4403
R9
10K-RPACK
1 16
2 15
3 14
4 13
5 12
6 11
7 10
8 9
R10
10K-RPACK
1 16
2 15
3 14
4 13
5 12
6 11
7 10
8 9
U36
79L05
5
6
7
1
2
3
GND
IN
IN
OUT
IN
IN
P2
HEADER40M
2
6
10
14
18
22
26
30
4
8
12
16
20
24
28
32
1
5
9
13
17
21
25
29
3
7
11
15
19
23
27
31
36
37
38
33
34
39
40
SH0
SH1
SH2
SH3
SH4
SH5
SH6
SH7
SL0
SL1
SL2
SL3
SL4
SL5
SL6
SL7
PH0
PH1
PH2
PH3
PH4
PH5
PH6
PH7
PL0
PL1
PL2
PL3
PL4
PL5
PL6
PL7
+12V
TREF
GND
GND
GND
SHLD
SHLD
R6
681,1%
R1
200-POT
R2
100K-POT
R7
1.10K,1%
C100
3300pF
+5V
DGND
ADCS*
D[0..7]
CH[0..2]
ADCLK
WR*
A[1..2]
EDAC*
UNI*
LDAC*
CSLSB*
CSMSB*
ADOUT
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