Datasheet AD7711 (Analog Devices) - 2

AD7711* PRODUCT PAGE QUICK LINKS Last Content Update: 02/23/2017 COMPARABLE PARTS TOOLS AND SIMULATIONS
View a parametric search of comparable parts. • Sigma-Delta ADC Tutorial
DOCUMENTATION REFERENCE MATERIALS Application Notes Technical Articles
• AN-202: An IC Amplifier User’s Guide to Decoupling, • Delta-Sigma Rocks RF, As ADC Designers Jump On Jitter Grounding, and Making Things Go Right for a Change • MS-2210: Designing Power Supplies for High Speed ADC • AN-283: Sigma-Delta ADCs and DACs • Part 1: Circuit Suggestions Using Features and • AN-311: How to Reliably Protect CMOS Circuits Against Functionality of New Sigma-Delta ADCs Power Supply Overvoltaging • Part 2: Circuit Suggestions Using Features and • AN-366: Evaluation Board for the AD7711 24-Bit Sigma- Functionality of New Sigma-Delta ADCs Delta ADC • AN-388: Using Sigma-Delta Converters-Part 1
DESIGN RESOURCES
• AN-389: Using Sigma-Delta Converters-Part 2 • AD7711 Material Declaration • AN-397: Electrically Induced Damage to Standard Linear • PCN-PDN Information Integrated Circuits: • Quality And Reliability • AN-406: Using the AD771X Family of 24-Bit Sigma-Delta • Symbols and Footprints A/D Converters • AN-553: Adjusting the Calibration Coefficients on the
DISCUSSIONS
AD771X Family of ADCs • AN-607: Selecting a Low Bandwidth (<15 kSPS) Sigma- View all AD7711 EngineerZone Discussions. Delta ADC • AN-615: Peak-to-Peak Resolution Versus Effective
SAMPLE AND BUY
Resolution Visit the product page to see pricing options. • AN-931: Understanding PulSAR ADC Support Circuitry
Data Sheet TECHNICAL SUPPORT
• AD7711: LC2MOS Signal Conditioning ADC with RTD Submit a technical question or find your regional support Excitation Currents Data Sheet number.
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Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM PRODUCT HIGHLIGHTS SPECIFICATIONS TIMING CHARACTERISTICS PIN FUNCTION DESCRIPTIONS TERMINOLOGY Intergral Nonlinearity 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 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 RTD Excitation Current Bipolar/Unipolar Inputs REFERENCE INPUT/OUTPUT VBIAS Input USING THE AD7711 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 AD7711 to 8051 Interface AD7711 to 68HC11 Interface APPLICATIONS 4-Wire RTD Configurations 3-Wire RTD Configurations OUTLINE DIMENSIONS Revision History