The EVAL-AD5933EBZ evaluation board, and the application software developed to
interface with the device. The AD5933 is a high precision impedance converter
system that combines an on-board frequency generator with a 12-bit, 1 MSPS
analog-to-digital converter (ADC). The frequency generator allows an external
complex impedance to be excited with a known frequency. The on-board ADC
samples the response signal from the impedance, and an on-board DSP engine at
each excitation frequency processes the DFT. The AD5933 also contains an
internal temperature sensor with 13-bit resolution. The part operates from a
2.7 V to 5.5 V supply. Other on-board components include a ADR423 3.0 V
reference to act as a stable supply voltage for the separate analog and digital
sections of the device and a ADP3303 ultrahigh precision regulator to act as a
supply to the on-board universal serial bus controller that interfaces to the
AD5933. The user has the option to power the entire circuitry from the USB port
of a computer.
URLs
FLUSP - FLOSS at USP
