AD5934
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AD5934

250 kSPS, 12-Bit Impedance Converter, Network Analyzer

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Part Details
Part Models 2
1ku List Price Starting From $5.33
Features
  • Programmable output peak-to-peak excitation voltage to a maximum frequency of 100 kHz
  • Programmable frequency sweep capability with serial I2C interface 
  • Frequency resolution of 27 bits (<0.1 Hz) 
  • Impedance measurement range from 1 kΩ to 10 MΩ
  • Capable of measuring 100 Ω to 1 kΩ with additional circuitry
  • Phase measurement capability 
  • System accuracy of 0.5% 
  • 2.7 V to 5.5 V power supply operation
  • Temperature range: −40°C to +125°C 
  • 16-lead SSOP package
Additional Details
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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:

ad5934

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
Part Models 2
1ku List Price Starting From $5.33

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Documentation

Documentation

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Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
AD5934YRSZ
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AD5934YRSZ-REEL7
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Part Models

Product Lifecycle

PCN

Oct 19, 2010

- 10_0002

Halogen Free Material Change for SSOP Products Assembled at Amkor

AD5934YRSZ

PRODUCTION

AD5934YRSZ-REEL7

PRODUCTION

Feb 8, 2010

- 04_0080

Qualification of the 8" C6 and Q Wafer Fab Processes at Analog Devices, Limerick, Ireland.

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Oct 19, 2010

- 10_0002

arrow down

Halogen Free Material Change for SSOP Products Assembled at Amkor

AD5934YRSZ

PRODUCTION

AD5934YRSZ-REEL7

PRODUCTION

Feb 8, 2010

- 04_0080

arrow down

Qualification of the 8" C6 and Q Wafer Fab Processes at Analog Devices, Limerick, Ireland.

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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EVAL-AD5933

AD5933 Evaluation Board

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EVAL-AD5933

AD5933 Evaluation Board

AD5933 Evaluation Board

Features and Benefits

  • Full-featured evaluation board for the AD5933
  • Graphic user interface software with frequency sweep capability for board control and data analysis
  • Various power supply linking options
  • Standalone capability with serial I2C loading from on-board microcontroller
  • Selectable system clock options including internal RC oscillator or on-board 16 MHz crystal

Product Detail

This user guide describes the EVAL-AD5933EBZ evaluation board, and the application software developed to interface with the device. The AD5933 is a high precision impedance converter system that combines an on-board frequency generator with a 12-bit, 1 MSPS analog-to-digital converter (ADC). The frequency generator allows an external complex impedance to be excited with a known frequency. The on-board ADC samples the response signal from the impedance, and an on-board DSP engine at each excitation frequency processes the DFT. The AD5933 also contains an internal temperature sensor with 13-bit resolution. The part operates from a 2.7 V to 5.5 V supply. Other on-board components include a ADR423 3.0 V reference to act as a stable supply voltage for the separate analog and digital sections of the device and a ADP3303 ultrahigh precision regulator to act as a supply to the on-board universal serial bus controller that interfaces to the AD5933. The user has the option to power the entire circuitry from the USB port of a computer.


The evaluation board also has a high performance trimmed 16 MHz surface-mount crystal to act as a system clock to the AD5933, if required. Interfacing to the AD5933 is through a USB microcontroller that generates the I2C signals necessary to communicate with the AD5933. Interfacing to the USB microcontroller is done through a Visual Basic® graphic user interface located on and run from the PC. Complete specifications for the AD5933 are available in the AD5933 data sheet available from Analog Devices, Inc., and should be consulted in conjunction with this user guide when using the evaluation board.

Reference Designs

Reference Designs 2

Optimized Signal Chain for Impedance Measurement Accuracy

High Accuracy Impedance Measurements Using 12-Bit Impedance Converters

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CN0217

High Accuracy Impedance Measurements Using 12-Bit Impedance Converters

CN0217

Circuits from the lab

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High Accuracy Impedance Measurements Using 12-Bit Impedance Converters

Features and Benefits

  • High accuracy impedance measurement
  • Complex impedance measurments using internal frequency generator
  • Measure up to several hundred k-ohms
View Detailed Reference Design external link

Design & Integration Tools

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