Datasheet AD7722 (Analog Devices) - 5

AD7722 ABSOLUTE MAXIMUM RATINGS1 ORDERING GUIDE
(TA = 25°C, unless otherwise noted.) DV
Package Package
DD to DGND . –0.3 V to +7 V AV
Model Temperature Description Option
DD, AVDD1 to AGND . –0.3 V to +7 V AVDD, AVDD1 to DVDD . –1 V to +1 V AD7722AS –40°C to +85°C 44-Lead MQFP S-44B AGND, AGND1 to DGND . –0.3 V to +0.3 V EVAL-AD7722CB Evaluation Board Digital Inputs to DGND . –0.3 V to DVDD + 0.3 V Digital Outputs to DGND . –0.3 V to DVDD + 0.3 V VIN(+), VIN(–) to AGND . –0.3 V to AVDD + 0.3 V REF1 to AGND . –0.3 V to AV
I
DD + 0.3 V
OL
REF2 to AGND . –0.3 V to AV
1.6mA
DD + 0.3 V DGND, AGND1, AGND2 . ± 0.3 V
TO OUTPUT 1.6V
Input current to any pin except the supplies2 . ± 10 mA
PIN CL
Operating Temperature Range . –40°C to +85°C
50pF IOH
Storage Temperature Range . –65°C to +150°C
200 A
Junction Temperature . 150°C θ Figure 1. Load Circuit for Timing Specifications JA Thermal Impedance . 72°C/W θJC Thermal Impedance . 20°C/W Lead Temperature, Soldering Vapor Phase (60 sec) . 215°C Infrared (15 sec) . 220°C NOTES 1Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional opera - tion 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. 2Transient currents up to 100 mA will not cause SCR latch-up.
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 AD7722 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. B Document Outline FEATURES FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ORDERING GUIDE TIMING SPECIFICATIONS PIN FUNCTION DESCRIPTIONS PIN CONFIGURATION PARALLEL MODE PIN FUNCTION DESCRIPTIONS SERIAL MODE PIN FUNCTION DESCRIPTIONS TERMINOLOGY Signal-to-Noise Plus Distortion Ratio (S/(N+D)) Total Harmonic Distortion (THD) Spurious-Free Dynamic Range (SFDR) Intermodulation Distortion Pass-Band Ripple Pass-Band Frequency Cutoff Frequency Stop-Band Frequency Stop-Band Attenuation Integral Nonlinearity Differential Nonlinearity Common-Mode Rejection Ratio Unipolar Offset Error Bipolar Offset Error Gain Error Typical Performance Characteristics CIRCUIT DESCRIPTION APPLYING THE AD7722 Analog Input Range Differential Inputs Applying the Reference Input Circuits Clock Generation Varying the Master Clock SYSTEM SYNCHRONIZATION AND CONTROL SYNC Input DVAL Reset Input Power-On Reset Offset and Gain Calibration DATA INTERFACING Parallel Interface SERIAL INTERFACE 2-Channel Multiplexed Operation Serial Interfacing to DSPs OUTLINE DIMENSIONS Revision History