Datasheet

ADS1217
6
SBAS260C
www.ti.com
PIN CONFIGURATION
PIN
NUMBER NAME DESCRIPTION
1AV
DD
Analog Power Supply
2 AGND Analog Ground
3A
IN
0 Analog Input 0
4A
IN
1 Analog Input 1
5A
IN
2 Analog Input 2
6A
IN
3 Analog Input 3
7A
IN
4 Analog Input 4
8A
IN
5 Analog Input 5
9A
IN
6 Analog Input 6
10 A
IN
7 Analog Input 7
11 A
INCOM
Analog Input Common
12 AGND Analog Ground
13 AV
DD
Analog Power Supply
14 V
RCAP
V
REFOUT
Bypass Capacitor
15 IDAC1 Current DAC1 Output
16 IDAC2 Current DAC2 Output
17 R
DAC
Current DAC Resistor
18-22 DGND Digital Ground
23 BUFEN Buffer Enable Input
24 RESET Active LOW, resets the entire chip.
PIN DESCRIPTIONS
PIN
NUMBER NAME DESCRIPTION
24
23
22
21
20
19
18
17
16
15
14
13
RESET
BUFEN
DGND
DGND
DGND
DGND
DGND
R
DAC
IDAC2
IDAC1
V
RCAP
AV
DD
D
OUT
D
IN
SCLK CS DRDY DV
DD
DGND DSYNC POL PDWN X
OUT
X
IN
AV
DD
AGND
A
IN
0
A
IN
1
A
IN
2
A
IN
3
A
IN
4
A
IN
5
A
IN
6
A
IN
7
A
INCOM
AGND
37
38
39
40
41
42
43
44
45
46
47
48
D0
D1
D2
D3
D4
D5
D6
D7
AGND
V
REFOUT
V
REF+
V
REF–
36 35 34 33 32 31 30 29 28 27 26
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25
12
ADS1217
Top View TQFP
25 X
IN
Clock Input
26 X
OUT
Clock Output, used with crystal or resonator.
27 PDWN Active LOW. Power Down. The power-down
function shuts down the analog and digital
circuits.
28 POL Serial Clock Polarity Input
29 DSYNC Active LOW, Synchronization Control Input
30 DGND Digital Ground
31 DV
DD
Digital Power Supply
32 DRDY Active LOW, Data Ready Output
33 CS Active LOW, Chip Select Input
34 SCLK Serial Clock, Schmitt Trigger
35 D
IN
Serial Data Input, Schmitt Trigger
36 D
OUT
Serial Data Output
37-44 D0-D7 Digital I/O 0-7
45 AGND Analog Ground
46 V
REFOUT
Voltage Reference Output
47 V
REF+
Positive Differential Reference Input
48 V
REF–
Negative Differential Reference Input