An analog to digital converter (ADC), convert a voltage into a digital value (integer) between 0 and ((2 power x)-1).
If the ADC is a 10 bits converter, the integer range will be between 0 and 1023. If the ADC is a 16 bits converter, the integer range will be between 0 and 65535.
We tested the MCP3008 which offers 8 10 bits analog to digital converters. The MCP3008 uses the SPI protocol.
The temperature/humidity sensors DHT11 and DHT22 are not analog sensors and use a special digital protocol that is not supported by Nusbio.