AD5934YRSZ-REEL7 Datasheet PDF - ADI

●GENERAL DESCRIPTION

●The AD5934 is a high precision impedance converter system solution which 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.

●FEATURES

●Programmable output peak-to-peak excitation voltage to a max frequency of 100 kHz

●Programmable frequency sweep capability with serial I2C® interface

●Frequency resolution of 27 bits (<0.1 Hz)

●Impedance measurement range from 100 Ω to 10 MΩ

●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

●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