AD5934YRSZ

AD5934 is a high precision impedance converter system solution that combines an on-board frequency generator with a 12bit, 250KSPS, 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. Typical application includes 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 and 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 100 ohm to 1Kohm with additional circuitry
• Phase measurement capability
• System accuracy of 0.5%
• 2.7V to 5.5V power supply operation
• 16 lead SSOP
• Operating temperature range from -40°C to 125°C

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