AD5933WYRSZ-REEL7

AD5933 is a high precision impedance converter system solution that combines an on-board frequency generator with a 12bit, 1MSPS, analogue-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. Application includes electrochemical analysis, bioelectrical impedance analysis, impedance spectroscopy, complex impedance measurement, corrosion monitoring and protection equipment, biomedical and automotive sensors, proximity sensing, non-destructive testing, material property analysis, fuel/battery cell condition monitoring.

• Programmable output peak-to-peak excitation voltage to a maximum frequency of 100KHz
• Programmable frequency sweep capability with serial I²C interface
• Frequency resolution of 27bits (<lt/>0.1Hz)
• Impedance measurement range from 1Kohm to 10Mohm
• Capable of measuring of 100 ohm to 1Kohm with additional circuitry
• Internal temperature sensor (±2°C) typical
• Phase measurement capability, system accuracy of 0.5% typical
• 2.7V to 5.5V power supply operation range
• Qualified for automotive applications
• 16 lead SSOP package, temperature range from -40°C to +125°C

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party