AD7612

Rev. 0 | Page 11 of 32

Pin No.

Mnemonic

Description

43

IN+

AI

Analog Input. Referenced to IN−.

45

TEMP

AO

Temperature Sensor Analog Output.

46

REFBUFIN

AI

Reference Buffer Input. When using an external reference with the internal reference buffer (PDBUF =

low, PDREF = high), applying 2.5 V on this pin produces 5 V on the REF pin. See the Voltage Reference

Input section.

47

PDREF

DI

Internal Reference Power-Down Input.

When low, the internal reference is enabled.

When high, the internal reference is powered down, and an external reference must be used.

48

PDBUF

DI

Internal Reference Buffer Power-Down Input.

When low, the buffer is enabled (must be low when using internal reference).

When high, the buffer is powered-down.

Hardware Configuration section and Software Configuration section.