The TMSTP+ and TMSTP– differential input can be used as a time-stamp input to mark a specific sample based on the timing of an external trigger event relative to the sampled signal. TIMESTAMP_EN (see the LSB control bit output register) must be set in order to use the timestamp feature and output the timestamp data. When enabled, the LSB of the 8-bit output sample is used to output the timestamp status. The trigger must be applied to the differential TMSTP+ and TMSTP– inputs. The trigger can be asynchronous to the ADC sampling clock and is sampled at approximately the same time as the analog input.