Datasheet

ADS1204
www.ti.com ........................................................................................................................................... SBAS301C – OCTOBER 2003 – REVISED FEBRUARY 2009
TERMINAL FUNCTIONS (continued)
TERMINAL
NAME NO. I/O
(1)
DESCRIPTION
OUT D 21 O Bit stream from channel D modulator
OUT C 22 O Bit stream from channel C modulator
OUT B 23 O Bit stream from channel B modulator
OUT A 24 O Bit stream from channel A modulator
NC 25 — No connection; this pin is left unconnected
AGND 26 — Analog ground
AV
DD
27 P Analog power supply; nominal 5V
REFOUT 28 AO Reference voltage output: output pin of the internal reference source; nominal 2.5V
AV
DD
29 P Analog power supply; nominal 5V
AGND 30 — Analog ground
REFIN B 31 AI Reference voltage input of channel B: pin for external reference voltage
REFIN A 32 AI Reference voltage input of channel A: pin for external reference voltage
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