EVAL-AD7746EBZ (ANALOG DEVICES)

The EVAL-AD7746EBZ is an evaluation board for evaluating AD7746EBZ CDC device. The evaluation board interfaces to the USB port of a PC. Evaluation software is available with the evaluation board which allows the user to easily communicate with the AD7746. The AD7746 is a high resolution, capacitance to digital converter (CDC). The capacitance to be measured is connected directly to the device inputs. The architecture features inherent high resolution (24bit, no missing codes, up to 21bit effective resolution), high linearity (0.01%), and high accuracy (±4fF factory calibrated). The AD7746 capacitance input range is ±4 pF (changing), while it can accept up to 17pF common mode capacitance (not changing), which can be balanced by a programmable on chip digital to capacitance converter (CAPDAC).