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AD779 Datasheet(PDF) 5 Page - Analog Devices |
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AD779 Datasheet(HTML) 5 Page - Analog Devices |
5 / 12 page 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 VCC AGND –0.3 +18 V VBE AGND –18 +0.3 V VCC 2 VEE –0.3 +26.4 V VDD DGND 0 +7 V AGND DGND –1 +1 V AIN, REFIN AGND VEE VCC V Digital Inputs DGND –0.5 +7 V Digital Outputs DGND –0.5 VDD +0.3 V 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 1Stresses above those listed under “Absolute Maximum Ratings” may cause 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. 2The AD779 is not designed to operate from ±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 1For two cycle read (8+16 bits) interface to 8-bit buses, see AD679. 2For details on grade and package offerings screened in accordance with MIL-STD-883, refer to the Analog Devices Military Products Databook or current AD779/883B data sheet. 3D = Ceramic DIP; N = Plastic DIP. |
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