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ti
6730 SOUTH TUCSON BLVD., TUCSON, AZ 85706 USA
TITLE
SHEET
OF
FILE
SIZE
DATE
REV
21 OCT 2004
DRAWN BY
ENGINEER
REVISION HISTORY
REV
ENGINEERING CHANGE NUMBER
APPROVED
B
DATA ACQUISITION PRODUCTS
HIGH-PERFORMANCE ANALOG DIVISION
SEMICONDUCTOR GROUP
M. P. ASHTON
M. P. ASHTON
C
1
1
ADS1271EVM
DOCUMENT CONTROL NO.
6466898
AN0+
2
AN1+
4
AN2+
6
AN3+
8
AN4+
10
AN5+
12
AN6+
14
AN7+
16
REF-
18
REF+
20
AGND
17
AGND
19
AN0-
1
AN1-
3
AN2-
5
AN3-
7
AGND
9
AGND
11
AGND
13
VCOM
15
J1
ANALOGHDR
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
J2T
SERIALHDR
C2
100U
AINP
1
AINN
2
AGND
3
AVDD
4
MODE
5
FORMAT
6
SYNC/PDWN
7
DIN
8
DOUT
9
DRDY/FSYNC
10
SCLK
11
CLK
12
DVDD
13
DGND
14
VREFN
15
VREFP
16
U7
ADS1271IPW
AINP
1
AINN
2
AGND
3
AVDD
4
MODE
5
FORMAT
6
SYNC/PDWN
7
DIN
8
DOUT
9
DRDY/FSYNC
10
SCLK
11
CLK
12
DVDD
13
DGND
14
VREFN
15
VREFP
16
U8
ADS1271IPW
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
J2B
SERIALHDR
OBCLKSEL
+3.3VD
DVDD
MODE1
EXTCLK
TP1
CLK
S4
SW-DP3T
S6
SW-DP3T
C24
1N
C21
100P
C20
100P
C26
100N
C27
100N
+
8
2
-
1
3
6
4
5
+
-
VOCM
U5
OPA1632
IN
1
OUT
2
GND
3
U3
REF3125AIDBZ
R15
47
R16 47
R10 1K
C10
10U
C6
1N C0G
C7
1N C0G
C11
10U
+AVDD
-AVDD
R11
1K
R7
1K
R8
1K
R5
100K
+
8
2
-
1
3
6
4
5
+
-
VOCM
U6
OPA1632
R17 47
R18 47
R12
1K
C12
10U
C8
1N C0G
C9
1N C0G
C17
10U
+AVDD
-AVDD
R14
1K
R9
1K
R13
1K
R6
100K
1
2
3
4
5
J5
HEADER-5
1
2
3
4
5
J4
HEADER-5
C18
10U
C13
10U
IN
4
GND
2
OUT
5
U11
TPS71550DCK
C5
1U
C4
1U
+AVDD
S1
SW-DP3T
S2
SW-DP3T
AUXREF1P
AUXREF1N
AUX1P
AUX1N
AUX2P
AUX2N
AUXREF2P
AUXREF2N
S3
SW-DP3T
S5
SW-DP3T
C25
1N
C23
100P
C22
100P
REFP
REFN
AUXREF1P
AUXREF1N
REFP
AUXREF2P
REFN
AUXREF2N
AMPOUT2P
AMPOUT2N
AIN1P
AIN1N
AIN0P
AIN0N
AUX1P
AUX1N
AUX2P
AUX2N
C14
10U
ADCAVDD2
C19
10U
C16
10U
ADCDVDD2
ADCDVDD1
C15
10U
ADCAVDD1
AIN0N
AIN0P
AIN1P
AIN1N
AIN1N
AIN1P
AIN0P
AIN0N
REFN
REFP
+AVDD
-AVDD
+5V
DVDD
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
J6
JPR-2X8
DVDD
+5V
ADCDVDD1
ADCDVDD2
ADCAVDD1
ADCAVDD2
D1V8IN
AGNDIN
DGNDIN
IN
1
OUT
2
GND
3
U2
REF3125AIDBZ
4
8
6
U1
REF1004I-2.5
R2
10K
R1
24.9K 1%
+5V
C1
1U 16V X7R
+5V
OBREF
C3
1U
OBCLK
+3.3VD
EOH
1
GND
2
OUT
3
VCC
4
U13
CTS_CB3LV-3C-27.0000-T
+3.3VD
C28
10N
DVDD
C29
1U
1A
1
1B
2
2C
3
GND
4
2A
5
2B
6
1C
7
VCC
8
U10
SN74LVC2G66DCT
A
1
B
2
Y
3
GND
4
Y
5
A/B
6
G
7
VCC
8
U12
SN74LVC2G157DCT
1A
1
1B
2
2C
3
GND
4
2A
5
2B
6
1C
7
VCC
8
U9
SN74LVC2G66DCT
S7
ALC_SLS121PC
CLKRMODE
FORMAT
R20
470K
R21
47K
R22
47K
J1A (TOP) = SAM_TSM-110-01-L-DV-P
J1B (BOTTOM) = SAM_SSW-110-22-F-D-VS-K
J3A (TOP) = SAM_TSM-105-01-L-DV-P
J3B (BOTTOM) = SAM_SSW-105-22-F-D-VS-K
2
3
6
7
4
U4
OPA350UA
VCCA
1
A1
2
A2
3
GND
4
VCCB
8
B1
7
B2
6
DIR
5
U15
SN74AVC2T45DCT
VCCA
1
A1
2
A2
3
GND
4
VCCB
8
B1
7
B2
6
DIR
5
U16
SN74AVC2T45DCT
+3.3VD
DVDD
2
4
1
5
3
U20
SN74LVC1G125DBV
MODE
FSDIR
FMTSEL
FORMAT
MODE0
DVDD
CLKX
FSR
FSOUT
FSOUT
DOUT
FSR
CLKX
VCCA
1
GND
2
A
3
B
4
DIR
5
VCCB
6
U17
SN74AVC1T45DBV
VCCA
1
GND
2
A
3
B
4
DIR
5
VCCB
6
U18
SN74AVC1T45DBV
DOUT
DIN
CLKR
VCCA
1
A1
2
A2
3
GND
4
VCCB
8
B1
7
B2
6
DIR
5
U19
SN74AVCH2T45DCT
SYNC
DVDD
+3.3VD
FSDIR
FSDIR
DOUT_1
FSR_1
FSOUT_1
1
2
3
4
J7
JPR-2X2
MODE0
MODE
R3
47K
DVDD
CLKXMODE
SCLK
DVDD
CLKRMODE
CLKX_1
CLKXMODE
CLK
FSYNC2
FSYNC1
FSYNC2
SCLK
DIN2
DIN1
DOUT1
SYNC_1
FSDIR
CLK
DIN2
FSYNC1
DOUT1
FSYNC1
DVDD = FSYNC
GND = SPI
R19
470K
R4
47K
CLK
FMTSEL
CLKRMODE
DVDD
DVDD
DVDD
+3.3VD
+3.3VD
+3.3VD
FSOUT_1
SYNC
DIN
FSDIR
MODE0
MODE1
R24
47
R25
47
R23
47
R26
47
+VA
1
-VA
2
+5VA
3
-5VA
4
DGND
5
AGND
6
+1.8VD
7
VD1
8
+3.3VD
9
+5VD
10
J3
POWERHDR
C30 100N
C31 100N