Sensitivity (electronics)

The sensitivity of an electronic device, such as a communications system receiver, or detection device, such as a PIN diode, is the minimum magnitude of input signal required to produce a specified output signal having a specified signal-to-noise ratio, or other specified criteria. In general, it is the signal level required for a particular quality of received information.^[1]

In signal processing, sensitivity also relates to bandwidth and noise floor.

Sensitivity is sometimes improperly used as a synonym for responsivity.^{[citation needed][2]}