SBAS824 October 2018 ADS1235
PRODUCTION DATA.
Refer to the PDF data sheet for device specific package drawings
The analog input pins have multiplexed alternate functions. The alternate functions are the second reference input and GPIO to provide the ac-bridge excitation drive signals. The functions are enabled by programming the associated function registers. The analog inputs retain measurement capability if the alternate functions are programmed. Table 2 summarizes the alternate functions multiplexed to the analog input pins.
ANALOG INPUTS | REFERENCE INPUTS | GPIO/AC-BRIDGE EXCITATION (2-wire mode) | GPIO/AC-BRIDGE EXCITATION (4-wire mode) |
---|---|---|---|
AIN0 | REFP1 | GPIO0/ACX1 | GPIO0/ACX1 |
AIN1 | REFN1 | GPIO1/ACX2 | GPIO1/ACX2 |
AIN2 | GPIO2/ACX1 | ||
AIN3 | GPIO3/ACX2 | ||
AIN4 | |||
AIN5 |