AD7952

Rev. 0 | Page 11 of 32

Pin No.

Mnemonic

Type1

Description

39

IN−

AI

Analog Input. Referenced to IN+.

and centered about 0 V.

In all ranges, IN− must be driven 180° out of phase with IN+.

40

VCC

P

High Voltage Positive Supply. Normally 7 V to 15 V.

41

VEE

P

High Voltage Negative Supply. Normally 0 V to −15 V (0 V in unipolar ranges).

43

IN+

AI

Analog Input. Referenced to IN−.

and centered about 0 V.

In all ranges, IN+ must be driven 180° out of phase with IN−.

45

TEMP

AO

Temperature Sensor Analog Output. When the internal reference is enabled (PDREF = PDBUF = low),

this pin outputs a voltage proportional to the temperature of the AD7952. See the Temperature Sensor

section.

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 Single-to-Differential Driver 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.