AD779

–5–

REV. B

ESD SENSITIVITY

The AD779 features input protection circuitry consisting of large “distributed” diodes and

polysilicon series resistors to dissipate both high energy discharges (Human Body Model) and fast,

low energy pulses (Charged Device Model). Per Method 3015.2 of MIL-STD-883C, the AD779

has been classified as a Category 1 device.

Proper ESD precautions are strongly recommended to avoid functional damage or performance

degradation. Charges as high as 4000 volts readily accumulate on the human body and test

equipment and discharge without detection. Unused devices must be stored in conductive foam or

shunts, and the foam should be discharged to the destination socket before devices are removed. For

further information on ESD precautions, refer to Analog Devices’ ESD Prevention Manual.

ABSOLUTE MAXIMUM RATINGS

1

With

Respect

Specification

To

Min

Max

Units

AGND

–0.3

+18

V

AGND

–18

+0.3

V

2

–0.3

+26.4

V

DGND

0

+7

V

AGND

DGND

–1

+1

V

AGND

V

Digital Inputs

DGND

–0.5

+7

V

Digital Outputs

DGND

–0.5

Max Junction

Temperature

175

°C

Operating Temperature

J and K Grades

0

+70

°C

A and B Grades

–40

+85

°C

S and T Grades

–55

+125

°C

Storage Temperature

–65

+150

°C

Lead Temperature

(10 sec max)

+300

°C

NOTES

permanent damage to the device. This is a stress rating only and functional

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

operational sections of this specification is not implied. Exposure to absolute

maximum rating conditions for extended periods may affect device reliability.

±15 V supplies.

WARNING!

ESD SENSITIVE DEVICE

ORDERING GUIDE

1

Model

2

Temperature Range

Tested and Specified

Package Description

Package Option

3

AD779JN

0

°C to +70°C

AC

28-Pin Plastic DIP

N-28

AD779KN

0

°C to +70°C

AC + DC

28-Pin Plastic DIP

N-28

AD779JD

0

°C to +70°C

AC

28-Pin Ceramic DIP

D-28

AD779KD

0

°C to +70°C

AC + DC

28-Pin Ceramic DIP

D-28

AD779AD

–40

°C to +85°C

AC

28-Pin Ceramic DIP

D-28

AD779BD

–40

°C to +85°C

AC + DC

28-Pin Ceramic DIP

D-28

AD779SD

–55

°C to +125°C

AC

28-Pin Ceramic DIP

D-28

AD779TD

–55

°C to +125°C

AC + DC

28-Pin Ceramic DIP

D-28

NOTES

AD779/883B data sheet.