REV. A

–8–

AD7725

ABSOLUTE MAXIMUM RATINGS

1

°C, unless otherwise noted.)

AGND, AGND1 to DGND . . . . . . . . . . . . . –0.3 V to +0.3 V

DGND, AGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

±0.3 V

Input Current to Any Pin except Supplies

2

. . . . . . . . .

±10 mA

Operating Temperature Range . . . . . . . . . . . . –40

°C to +85°C

Storage Temperature Range . . . . . . . . . . . . . –65

°C to +150°C

Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . 150

°C

°C/W

°C/W

Lead Temperature, Soldering

Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . . . 215

°C

Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220

°C

ESD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 kV

NOTES

nent damage to the device. This is a stress rating only; functional operation of the

device at these or any other conditions above those indicated in the operational

section of this specification is not implied. Exposure to absolute maximum rating

conditions for extended periods may affect device reliability.

ORDERING GUIDE

Temperature

Package

Package

Model

Range

Description

AD7725BS

–40

°C to +85°CMetric Quad S-44-2

Flatpack

AD7725BS-REEL –40

°C to +85°CMetric Quad S-44-2

Flatpack

EVAL-

Evaluation

AD7725CB

2

Board

EVAL-

Controller

CONTROL

Board

BRD2

3

NOTES

Evaluation Board Controller for evaluation/demonstration purposes. It is accom-

panied by software and technical documentation.

control and communicate with all Analog Devices boards ending in the CB

designator. To obtain the complete evaluation kit, the following needs to be

ordered: EVAL-AD7725CB, EVAL-CONTROL BRD2, and a 12 V ac transformer.

The Filter Wizard software can be downloaded from the Analog Devices website.

CAUTION

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily

accumulate on the human body and test equipment and can discharge without detection. Although the

AD7725 features proprietary ESD protection circuitry, permanent damage may occur on devices

subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended

to avoid performance degradation or loss of functionality.

STATUS

INSTRUCTION

DB0 DB15

–

INT

RS

CS

RD/

WR

THREE-STATE

THREE-STATE

THREE-STATE

Figure 8. Parallel Mode (Reading the Status Register and Writing Instructions)