https://devzone.nordicsemi.com/f/nordic-q-a/122495/comp-electrical-specificationDear devzone, Can our nRF52840 detect 20 nanosecond voltage fluctuations using COMP? For example, if I set a lower threshold of 20mV and an upper threshold of 60mV, and the voltage changes from 50mV to 60mV in 20 nanoseconds, can COMP detect it and generateen-USTelligent Community 13Wed, 25 Jun 2025 12:32:28 GMThttps://devzone.nordicsemi.com/thread/540483?ContentTypeID=1Wed, 25 Jun 2025 12:32:28 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1018f364-9919-483b-833f-a7b267d33260Priyanka<p>Hi,</p> <p>If you take look at the <a href="https://docs.nordicsemi.com/bundle/ps_nrf52840/page/comp.html#ariaid-title25">nRF52840 Datasheet, from the COMP electrical specs</a>, you can see that even in high-speed mode, the fastest possible response is 100 ns, and that’s with 10 mV overdrive (i.e., the input voltage is significantly past the threshold).</p> <p>So I don&#39;t think a 20ns change can be reliably detected.</p> <p>-Priyanka</p><div style="clear:both;"></div>