Datasheet

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ADS1216
SBAS171D – NOVEMBER 2000 – REVISED SEPTEMBER 2006
DEVICE INFORMATION (continued)
TERMINAL FUNCTIONS
PIN NUMBER NAME DESCRIPTION
1, 13 AV
DD
Analog power supply
2, 12, 45 AGND Analog ground
3–10 A
IN
0–7 Analog input 0–7
11 A
INCOM
Analog input common
14 V
RCAP
V
REF
bypass capcitor
15 IDAC1 Current DAC1 output
16 IDAC2 Current DAC2 output
17 RDAC Current DAC resistor
18–22, 30 DGND Digital ground
23 BUFEN Buffer enable
24 RESET Active LOW; resets the entire chip.
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
29 DSYNC Active LOW; synchronization control
31 DV
DD
Digital power supply
32 DRDY Active LOW; data ready
33 CS Active LOW; chip select
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
46 V
REFOUT
Voltage reference output
47 V
REF+
Positive differential reference input
48 V
REF–
Negative differential reference input
10
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