AD7739 datasheet(9/32 Pages) AD

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Data Sheet

AD7739

Rev. A | Page 9 of 32

Pin No.

Mnemonic

Description

AGND

Ground Reference Point for Analog Circuitry.

RDY

Logic Output. Used as a status output in both conversion mode and calibration mode. In

conversion mode, a falling edge on this output indicates that either any channel or all

channels have unread data available, according to the RDYFN bit in the I/O port register.

In calibration mode, a falling edge on this output indicates that calibration is complete

(see the Digital Interface Description section for details).

DOUT

Serial Data Output. Serial data is read from the output shift register on the part. This

output shift register can contain information from any AD7739 register, depending on

the address bits of the communications register.

DIN

Serial Data Input (Schmitt Triggered). Serial data is written to the input shift register on

the part. Data from this input shift register is transferred to any AD7739 register,

depending on the address bits of the communications register.

DVDD

Digital Supply Voltage, 3 V or 5 V Nominal.

DGND

Ground Reference Point for Digital Circuitry.

AD7739 Datasheet(PDF) 9 Page - Analog Devices