1
2
3
4
5
6
A
B
C
D
6
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3
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1
D
C
B
A
ti
6730 SOUTH TUCSON BLVD., TUCSON, AZ 85706 USA
TITLE
SHEET
OF
FILE
SIZE
DATE
REV
DRAWN BY
ENGINEER
REVISION HISTORY
REV
ENGINEERING CHANGE NUMBER
APPROVED
B
DATA ACQUISITION PRODUCTS
HIGH-PERFORMANCE ANALOG DIVISION
SEMICONDUCTOR GROUP
DOCUMENT CONTROL NO.
CL
K
1
SCLK
2
DRDY
3
DOUT
4
MOD/DIN
5
DGND
6
PHS/M
C
L
K
7
DR1
/M
1
8
DR0
/M
0
9
HPF/SYNC
10
MFLAG
11
DGND
12
AINN1
18
AINP1
17
AVDD
19
AVSS
20
VREFN
21
VREFP
22
PWDN
23
RESET
24
PINM
O
D
25
DVDD
26
DGND
27
BYPAS
28
AINP2
15
AINN2
16
CAP-
14
CAP+
13
ADS1281 - TSSOP-24
ADS1282 - TSSOP-28
U6
ADS1281/82
R2
2K
+10V
+10V
R3
47
C6
150nF
C7
0.1uF
C4
0.1uF
C1
1uF
R1
10K
1
2
3
J1
JPR-1X3
C3
22uF
GND
TP1
GND
CNTL
1
CLKX
3
CLKR
5
FSX
7
FSR
9
DX
11
DR
13
INT
15
TOUT
17
GPIO5
19
GPIO0
2
DGND
4
GPIO1
6
GPIO2
8
DGND
10
GPIO3
12
GPIO4
14
SCL
16
DGND
18
SDA
20
J5
SERIALHDR
OBCLK
EOH
1
GND
2
OUT
3
VCC
4
U12
CRY_C3391-4.096
DVDD
C32
10nF C0G
A
1
B
2
Y
3
GND
4
Y
5
A/B
6
G
7
VCC
8
U11
SN74LVC2G157DCT
R26
470K
R24
47K
R25
470K
TO
U
T
GP
IO
5
J5A (TOP) = SAM_TSM-110-01-L-DV-P
J5B (BOTTOM) = SAM_SSW-110-22-F-D-VS-K
DVDD
P0
0
1
P0
1
2
P0
2
3
P0
3
4
P0
4
5
P0
5
6
P06
7
P07
8
GND
9
P10
10
P11
11
P12
12
P1
3
13
P1
4
14
P1
5
15
P1
6
16
P1
7
17
A0
18
SCL
19
SDA
20
VCC
21
INT
22
A1
23
A2
24
U7
PCA9535RGE
C5
0.1uF
DVDD
D5
FRC_BAT54
D6
FRC_BAT54
D7
ONS_MMBZ5231BLT1
Ref+
Ref-
VIN
2
VOUT
6
TRIM
5
GND
4
TEMP
3
U1
REF5050ID
AVDD
A0(+)
2
A1(+)
4
A2(+)
6
A3(+)
8
A4
10
A5
12
A6
14
A7
16
REF-
18
REF+
20
A0(-)
1
A1(-)
3
A2(-)
5
A3(-)
7
AGND
9
AGND
11
AGND
13
VCOM
15
AGND
17
AGND
19
J6
DAUGHTER-ANALOG
J6A (TOP) = SAM_TSM-110-01-L-DV-P
J6B (BOTTOM) = SAM_SSW-110-22-F-D-VS-
IN
1
GND
2
EN
3
OUT
5
BYP
4
U10
TPS79225DBV
Q1
FRC_FDN302P
2
4
5
3
U9
SN74LVC1G07DBV
R14
100K
+5V
+5V
Q3
FRC_FDN337N
+5V
2
4
5
3
U8
SN74AHCT1G04DBV
+5V
+3.3V
-VA
2
-5VA
4
AGND
6
VD1
8
+5VD
10
+VA
1
+5VA
3
DGND
5
+1.8VD
7
+3.3VD
9
J8
DAUGHTER-POWER
ADC AVDD
ADC AVSS
DIGITAL=3.3V
DGND
AGND
DVDD
JUMPER FUNCTIONS
D8
ONS_MMBZ5231BLT1
J8A (TOP) = SAM_TSM-105-01-L-DV-P
J8B (BOTTOM) = SAM_SSW-105-22-F-D-VS
IN
2
GND
1
EN
3
OUT
5
BYP
4
U13
TPS72325DBV
Q2
FRC_FDN302P
R15
100K
C8
1uF
AVDD
AVDD
DVDD
C33
1uF
-5VA
5.1V
-2.5V
+2.5V
C24
10uF
C25
1uF
C23
10uF
C9
1uF
R5
0
R4
0
R8
47
R9
47
1
2
3
J2
JPR-1X3
1
2
3
J3
JPR-1X3
S1
SW-DPDT
C27
10nF C0G
+
8
2
-
1
3
6
4
5
+
-
VOCM
U4
OPA1632
R6
47
R7
47
R18 1K
C15
10uF
C11
1nF C0G
C12
1nF C0G
C16
10uF
+10V
-10V
R19
1K
R16
1K
R17
1K
R12
100K
C17
10uF
C10
1uF
+
8
2
-
1
3
6
4
5
+
-
VOCM
U5
OPA1632
R10
47
R11
47
R22 1K
C18
10uF
C13
1nF C0G
C14
1nF C0G
C19
10uF
+10V
-10V
R23
1K
R20
1K
R21
1K
R13
100K
C20
10uF
VIN
2
VOUT
6
TRIM
5
GND
4
TEMP
3
U2
REF5025
C21
1nF C0G
C22
1nF C0G
+10V
-10V
+10V
2
3
6
7
4
1
8
U3
OPA227
Ref-
Ref+
D1A
BAT54S
D1B
BAT54S
D2A
BAT54S
D2B
BAT54S
D3B
BAT54S
D4B
BAT54S
D3A
BAT54S
D4A
BAT54S
AVDD
SYNC
M1
M0
MCLK
PMODE
RESET
PDWN
MFLAG
SYNC
MFLAG
PMODE
RESET
M1
M0
MCLK
PDWN
1
2
3
J4
JPR-1X3
DVDD
ADS1282
ADS1281
SYNC
MFLAG
PMODE
RESET
DVDD
C2
22uF
C28
0.1uF
C30
10uF
C31
10uF
C29
0.1uF
RUSSELL ANDERSON
RUSSELL ANDERSON
6495107
1
1
21-AUG-2008
ADS1281/82EVM
A
C26
1uF
1
2
3
4
5
6
7
8
9
10
J7
JPR-2X5
C34
1uF
DVDD
RA1A
100K
RA2A
100K
C35
0.1uF
-10V
R27
100K
DVDD
A0
1
A1
2
GND
4
SDA
5
SCL
6
WP
7
VCC
8
A2
3
U14
MCP_24AA256-I/ST
C36
0.1uF
DVDD
DVDD
2
4
6
1
3
5
J9
HEADER-3X2
RA3
100K
1
2
3
J10
JPR-1X3
R28
100K
DVDD
These pins are shorted on the PCB.