AD9772A

Rev. C | Page 11 of 40

Pin No.

Mnemonic

Description

39

REFIO

Reference Input/Output. This pin serves as the reference input when the internal reference is disabled (that

is, when REFLO is tied to AVDD), or it serves as the 1.2 V reference output when the internal reference is

activated (that is, when REFLO is tied to ACOM). If the internal reference is activated, a 0.1 μ F capacitor to

ACOM is required.

40

FSADJ

Full-Scale Current Output Adjust.

42

B

Complementary DAC Current Output. Full-scale current is selected when all data bits are 0s.

43

DAC Current Output. Full-scale current is selected when all data bits are 1s.

45, 46

AVDD

Analog Supply Voltage (3.1 V to 3.5 V).