The ADC 4 Click Board™ is an advanced analogue to the digital multichannel converter, which can sample inputs from 16 single-ended channels or 8 differential input channel pairs. This device has a quite high sampling resolution of 24 bits and the output data rates can range from 5 SPS to 250 kSPS. Besides the internal 2.5V reference voltage source, the ADC 4 Click Board™ is also equipped with an external reference voltage circuit, which provides 4.096V. Finally, a custom reference voltage - up to 5V can be connected to the multiplexed inputs of the ADC converter. These options give a lot of flexibility in choosing the right reference voltage for any application.