Texas Instruments ADS1282EVM User Manual page 29

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