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AD5934:  250 kSPS 12-Bit Impedance Converter Network Analyzer

Product Status:   Production 

The AD5934 is a high precision impedance converter system solution that combines an on-board frequency generator with a 12-bit, 250 kSPS, analog-to-digital converter (ADC). The frequency generator allows an external complex impedance to be excited with a known frequency. The response signal from the impedance is sampled by the on-board ADC and a discrete Fourier transform (DFT) is processed by an ...More

AD5934:  250 kSPS 12-Bit Impedance Converter Network Analyzer

Product Description

The AD5934 is a high precision impedance converter system solution that combines an on-board frequency generator with a 12-bit, 250 kSPS, analog-to-digital converter (ADC). The frequency generator allows an external complex impedance to be excited with a known frequency. The response signal from the impedance is sampled by the on-board ADC and a discrete Fourier transform (DFT) is processed by an on-board DSP engine. The DFT algorithm returns a real (R) and imaginary (I) data-word at each output frequency.

Once calibrated, the magnitude of the impedance and relative phase of the impedance at each frequency point along the sweep is easily calculated using the following two equations:

Magnitude = √ R2 + I2
Phase = Tan-1 (I/R)

A similar device, available from Analog Devices, Inc., is the AD5933, which is a 2.7 V to 5.5 V, 1 MSPS, 12-bit impedance converter, with an internal temperature sensor, available in a 16-lead SSOP.

Applications

  • Electrochemical analysis
  • Bioelectrical impedance analysis
  • Impedance spectroscopy
  • Complex impedance measurement
  • Corrosion monitoring and protection equipment
  • Biomedical and automotive sensors
  • Proximity sensing
  • Nondestructive testing
  • Material property analysis
  • Fuel/battery cell condition monitoring

    • Data Sheet, Rev. A, 5/08

      • Impedance range: 100 Ohms to 10 MOhms
      • 0.5% Measurement Accuracy.
      • Programmable excitation frequency sweep (up to 100 kHz)
      • Real and Imaginary components of each frequency generated (DFT)
      • 2.7 V to 5.5 V power supply
      • Frequency resolution 27 bits (<0.1 Hz)
      • Predetermined frequency sweep capability
      • See Data Sheet for Additional Information

    Functional Block Diagram for AD5934

     

    Visit the AD5933/34 Impedance to Digital Converter Demonstration/Configuration Assistant ... This tool is both a demonstration and design tool for the AD5933 and AD5934 impedance converter parts. It demonstrates the steps needed to configure and use the parts before purchasing an evaluation board. A design mode is also available which permits free control of the user interface and the calculation of values for programming the internal registers.

    Technical Article: Blood Analysis Systems Require Wide Bandwidths and Fast Sample Processing Cycles and Analysis

    For additional ADI Healthcare Products and related information, please visit www.analog.com/healthcare.

    View Full Circuit Note Enlarge
    Circuit Benefits and Features:
    • High accuracy impedance measurement
    • Complex impedance measurments using internal frequency generator
    • Measure up to several hundred k-ohms
    Products Used in This Circuit
    • AD5933: 1 MSPS, 12 Bit Impedance Converter Network Analyzer
    • AD5934: 250 kSPS 12-Bit Impedance Converter Network Analyzer
    • AD8606: Precision, Low Noise, RRIO, CMOS Op Amp (Dual)
    Circuit Design Assistance:
    • Design & Integration Files
    • Evaluation Hardware

    Circuits from the Lab™ reference circuits are engineered and tested for quick and easy system integration to help solve today's analog, mixed-signal, and RF design challenges.

    Budgetary Price & Packaging   |   Samples   |   Check Inventory & Purchase

    AD5934 Model Options
    Model Package Pins Temp.
    Range    		 Packing,
    Qty    		 Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
    Purchase/Sample
    AD5934YRSZ Status: Production 16 ld SSOP 16 Ind Tube, 77 $11.01 $4.40 Y  Material Info PCN Purchase Sample
    AD5934YRSZ-REEL7 Status: Production 16 ld SSOP 16 Ind Reel, 500 - $4.40 Y  Material Info PCN Purchase
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    • Production: The model is currently being produced, and generally available for purchase and sampling.
    • Last Time Buy: The model has been scheduled for obsolescence, but may still be purchased for a limited time.
    • Obsolete: The specific part is obsolete and no longer available. Other models listed in the table may still be available (if they have a status that is not obsolete).
    Package Description
    The package for this IC (i.e. DIP, SOIC, BGA). An Evaluation Board is a board engineered to show the performance of the model, the part is included on the board.

    For detailed drawings and chemical composition please consult our  Package Site

    Pin Count
    Pin Count is the number of pins, balls, or pads on the device. Pin-out diagrams & pin function descriptions may be found in the datasheet.

    Temperature Range
    This is the acceptable operating range of the device. The various ranges specified are as follows:
    • Commercial: 0 to +70 degrees Celsius
    • Military : -55 to +125 degrees Celsius
    • Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
    • Automotive: -40 to +125 degrees Celsius
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    Price
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    Production Availability
    This is the date Analog Devices, Inc. anticipates that the product will ship from the warehouse. Most orders ship within 48 hours of this date.Once an order has been placed, Analog Devices, Inc. will send an Order Acknowledgement email to confirm your delivery date. It is important to note the scheduled dock date on the order entry screen. We do take orders for items that are not in stock, so delivery may be scheduled at a future date. Also, please note the warehouse location for the product ordered. We have warehouses in the United States, Europe and Southeast Asia. Transit times from these sites may vary.
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    RoHS Compliant
    Due to environmental concerns, ADI offers many of our products in lead-free versions. For more information about lead-free parts, please consult our Pb (Lead) free information page.

    View PCN/PDN
    This is the list of Product Change Notifications (PCN) and Product Discontinuance Notifications (PDN) published on the web for this model. Click on the link to access PCN/PDN information. Online PCNs are available starting in 2009 and online PDNs are available starting in 2010. To obtain older PCNs or PDNs, contact your ADI Sales Rep. For more information on ADI's PCN/PDN process, please visit our PCN/PDN Information page.

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    *The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

    AD5933 Evaluation Board
    Model Description Price RoHS View PCN/ PDN Check Inventory/
    Purchase/Sample
    EVAL-AD5933EBZ Status: Production Evaluation Board $59.00 Yes -

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    Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

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