The choice of an non-RMS responding detector will follow a similar path beginning with a narrowing down of the available options based on the frequency range and input RF power range. Log amps can operate at frequencies as low as DC up to as high as 10GHz. Detection range varies from 45dB at the low end to as high as 100dB. In some applications the response time of the detector will be critical. In such situations, devices with 10% to 90% output voltage response times that are as low as five nanoseconds can be chosen.