Analog Devices Inc. AD5933 Impedance Converter & Network Analyzer

Analog Devices AD5933 Impedance Converter and Network Analyzer is a high-precision system solution that combines an onboard frequency generator with a 12-bit, 1MSPS, analog-to-digital converter. This solution is implemented in electrochemical and bioelectrical impedance analysis and impedance spectroscopy in addition to corrosion monitoring and protection equipment. The frequency generator allows an external complex impedance to generate an excitation signal with a known frequency. The response signal from the impedance is sampled by the onboard ADC and a discrete Fourier transform (DFT) is processed by an onboard DSP engine. The DFT algorithm returns a real (R) and imaginary (I) data-word at each output frequency.


  • 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 1kΩ to 10 MΩ
  • Capable of measuring of 100Ω to 1kΩ with additional circuitry
  • Internal temperature sensor (±2°C)
  • Internal system clock option
  • 16.776MHz maximum clock frequency
  • Phase measurement capability
  • System accuracy of 0.5%
  • 2.7V to 5.5V power supply operation
  • -40°C to +125°C operating temperature range
  • 16-lead SSOP package
  • Qualified for automotive applications
  • 12-bit resolution
  • 60dB Signal to Noise Ratio (SNR)
  • 1x channel


  • 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

Block Diagram

Block Diagram - Analog Devices Inc. AD5933 Impedance Converter & Network Analyzer
Publicado: 2019-09-20 | Actualizado: 2022-03-10