EVAL-AD5933EBZ (ANALOG DEVICES)

The EVAL-AD5933EBZ is an evaluation board for AD5933 devices. The AD5933 is a high precision impedance converter system solution that combines an on-board frequency generator with a 12bit, 1MSPS, 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. Once calibrated, the magnitude of the impedance and relative phase of the impedance at each frequency point along the sweep is easily calculated. This is done off chip using the real and imaginary register contents, which can be read from the serial I2C interface.