The AD5934 is a high precision 12-bit impedance converter/network analyzer that measures resistances from 100 Ω to 10 MΩ at frequencies from 10 Hz to 100 kHz. The AD5934 operates from a 2.7 V to 5.5 V supply, has a temperature range of -40°C to +125°C, and comes in a 16-lead SSOP package.
The AD5934 from Analog Devices is a high‑precision impedance converter that integrates a frequency generator, a 12‑bit ADC, and an on‑board DSP to perform discrete Fourier transforms. It supports programmable output excitation voltages and frequency sweeps via an I²C serial interface.
The device operates from a 2.7 V to 5.5 V supply, works over a temperature range of –40 °C to +125 °C, and is offered in a 16‑lead SSOP package. Typical applications include electrochemical analysis, bio‑impedance, corrosion monitoring, and material property testing.
| Impedance Range | 0.001 to 10 MΩ |
|---|---|
| Total System Accuracy | 0.5 % |
| Output Frequency Range | 1 to 100 kHz |
| Output Frequency Resolution | <0.1 Hz |
| MCLK Frequency | 16.776 MHz |
| ADC Resolution | 12 bits |
| ADC Sampling Rate | 250 kSPS |
| Supply Voltage (VDD) | 2.7 to 5.5 V |
| Operating Temperature Range | –40 °C to +125 °C |
| I²C Clock Frequency (SCL max) | 400 kHz |
The device can measure impedances from 0.001 Ω up to 10 MΩ.
It operates from 2.7 V to 5.5 V.
The I²C SCL line can run up to 400 kHz.
The frequency sweep can be programmed from 1 kHz to 100 kHz.