Datasheet AD7712 (Analog Devices) - 2

AD7712* PRODUCT PAGE QUICK LINKS Last Content Update: 02/23/2017 COMPARABLE PARTS REFERENCE MATERIALS
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Technical Articles
• Delta-Sigma Rocks RF, As ADC Designers Jump On Jitter
EVALUATION KITS
• MS-2210: Designing Power Supplies for High Speed ADC • AD7712 Evaluation Board • Part 1: Circuit Suggestions Using Features and Functionality of New Sigma-Delta ADCs
DOCUMENTATION
• Part 2: Circuit Suggestions Using Features and
Application Notes
Functionality of New Sigma-Delta ADCs • AN-202: An IC Amplifier User’s Guide to Decoupling, Grounding, and Making Things Go Right for a Change
DESIGN RESOURCES
• AN-283: Sigma-Delta ADCs and DACs • AD7712 Material Declaration • AN-311: How to Reliably Protect CMOS Circuits Against • PCN-PDN Information Power Supply Overvoltaging • Quality And Reliability • AN-388: Using Sigma-Delta Converters-Part 1 • Symbols and Footprints • AN-389: Using Sigma-Delta Converters-Part 2 • AN-397: Electrically Induced Damage to Standard Linear
DISCUSSIONS
Integrated Circuits: View all AD7712 EngineerZone Discussions. • AN-406: Using the AD771X Family of 24-Bit Sigma-Delta A/D Converters
SAMPLE AND BUY
• AN-553: Adjusting the Calibration Coefficients on the Visit the product page to see pricing options. AD771X Family of ADCs • AN-607: Selecting a Low Bandwidth (<15 kSPS) Sigma-
TECHNICAL SUPPORT
Delta ADC • AN-615: Peak-to-Peak Resolution Versus Effective Submit a technical question or find your regional support Resolution number.
Data Sheet DOCUMENT FEEDBACK
• AD7712: LC2MOS Signal Conditioning ADC Data Sheet Submit feedback for this data sheet.
TOOLS AND SIMULATIONS
• Sigma-Delta ADC Tutorial
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Document Outline ANALOG INPUT FUNCTIONS FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM PRODUCT HIGHLIGHTS SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ORDERING GUIDE TIMING CHARACTERISTICS PIN CONFIGURATION PIN FUNCTION DESCRIPTION TERMINOLOGY Integral Nonlinearity Positive Full-Scale 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 Control Register (24 Bits) Filter Selection (FS11–FS0) CIRCUIT DESCRIPTION THEORY OF OPERATION Input Sample Rate DIGITAL FILTERING Filter Characteristics Post Filtering Antialias Considerations ANALOG INPUT FUNCTIONS Analog Input Ranges Burnout Current Bipolar/Unipolar Inputs REFERENCE INPUT/OUTPUT VBIAS Input USING THE AD7712 SYSTEM DESIGN CONSIDERATIONS Clocking System Synchronization Accuracy Autocalibration Self-Calibration System Calibration System Offset Calibration Background Calibration Span and Offset Limits POWER-UP AND CALIBRATION Drift Considerations POWER SUPPLIES AND GROUNDING DIGITAL INTERFACE Self-Clocking Mode Read Operation Write Operation External Clocking Mode Read Operation Write Operation SIMPLIFYING THE EXTERNAL CLOCKING MODE INTERFACE MICROCOMPUTER/MICROPROCESSOR INTERFACING AD7712 to 8051 Interface AD7712 to 68HC11 Interface APPLICATIONS 4–20 mA LOOP OUTLINE DIMENSIONS Revision History