Analog-to-Digital Converter (ADCs) Evaluation Boards are populated circuit boards?used to provide a working example of a specific ADC or device. The number of A/D converters?on a given board ranges?from 3?to?32, with?sampling rates per second?from 2.5 kHz to 26 GHz and?input voltages?ranging from?0 to 8 Vp-p.