Datasheet AD7701 (Analog Devices) - 5

AD7701 ABSOLUTE MAXIMUM RATINGS1
Operating Temperature Range (T Commercial Plastic (A, B Versions) . –40°C to +85°C A = 25°C, unless otherwise noted.) DV Industrial CERDIP (A, B Versions) . –40°C to +85°C DD to AGND . –0.3 V to +6 V DV Extended CERDIP (S, T Versions) . –55°C to +125°C DD to AVDD . –0.3 V to +0.3 V DV Storage Temperature Range. –65°C to +150°C SS to AGND . +0.3 V to –6 V AV Lead Temperature (Soldering, 10 secs) . 300°C DD to AGND . –0.3 V to +6 V AV Power Dissipation (Any Package) to 75°C . 450 mW SS to AGND . +0.3 V to –6 V AGND to DGND . –0.3 V to +0.3 V Derates above 75°C by . 10 mW/°C Digital Input Voltage to DGND . –0.3 V to DV NOTES DD + 0.3 V 1 Analog Input Stresses above those listed under Absolute Maximum Ratings may cause perma- nent damage to the device. This is a stress rating only; functional operation of the Voltage to

AGND . AVSS – 0.3 V to AVDD + 0.3 V device at these or any other conditions above those listed in the operational Input Current to Any Pin Except Supplies2 . ± 10 mA sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. 2Transient currents of up to 100 mA will not cause SCR latch-up.
ORDERING GUIDE Temperature Linearity Package Model Range Error (% FSR) Options*
AD7701AN –40°C to +85°C 0.003 N-20 AD7701BN –40°C to +85°C 0.0015 N-20 AD7701AR –40°C to +85°C 0.003 R-20 AD7701BR –40°C to +85°C 0.0015 R-20 AD7701ARS –40°C to +85°C 0.003 RS-28 AD7701AQ –40°C to +85°C 0.003 Q-20 AD7701BQ –40°C to +85°C 0.0015 Q-20 AD7701SQ –55°C to +125°C 0.003 Q-20 AD7701TQ –55°C to +125°C 0.0015 Q-20 *N = PDIP; Q = CERDIP; R = SOIC; RS = SSOP.
PIN CONFIGURATIONS PDIP, CERDIP, SOIC SSOP MODE 1 20 SDATA MODE 1 28 SDATA CLKOUT 2 19 SCLK CLKOUT 2 27 SCLK CLKIN 3 18 DRDY CLKIN 3 26 DRDY SC1 4 17 SC2 4 25 SC2 AD7701 SC1 DGND 5 16 CS 5 24 CS TOP VIEW DGND DV 6 (Not to Scale) 15 DV SS DD NC 6 23 NC AD7701 AVSS 14 AV 7 DD NC 7 22 NC TOP VIEW AGND 8 13 CAL DVSS 8 (Not to Scale) 21 NC A 12 BP
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9 UP IN NC 9 20 DVDD VREF 10 11 SLEEP AVSS 10 19 AVDD NC 11 18 NC AGND 12 17 CAL AIN 13 16 BP
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UP VREF 14 15 SLEEP NC = NO CONNECT 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 AD7701 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. –4– REV. E Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM PRODUCT HIGHLIGHTS SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ORDERING GUIDE PIN CONFIGURATIONS PIN FUNCTION DESCRIPTIONS TIMING CHARACTERISTICS DEFINITION OF TERMS Linearity Error Differential Linearity Error Positive Full-Scale Error Unipolar Offset Error Bipolar Zero Error Bipolar Negative Full-Scale Error Positive Full-Scale Overrange Negative Full-Scale Overrange Offset Calibration Range Full-Scale Calibration Range Input Span GENERAL DESCRIPTION THEORY OF OPERATION DIGITAL FILTERING FILTER CHARACTERISTICS USING THE AD7701 SYSTEM DESIGN CONSIDERATIONS CLOCKING ANALOG INPUT RANGES INPUT SIGNAL CONDITIONING Source Resistance Antialias Considerations VOLTAGE REFERENCE CONNECTIONS GROUNDING AND SUPPLY DECOUPLING ACCURACY AND AUTOCALIBRATION CALIBRATION RANGE POWER-UP AND CALIBRATION POWER SUPPLY SEQUENCING GROUNDING SINGLE-SUPPLY OPERATION SLEEP MODE DIGITAL INTERFACE Synchronous Self-Clocking Mode (SSC) Synchronous External Clock Mode (SEC) Asynchronous Communications (AC) Mode DIGITAL NOISE AND OUTPUT LOADING OUTLINE DIMENSIONS Revision History