A low power CMOS amplitude peak detector for on-chip self-calibration applications

A CMOS 90 nm technology peak detector is presented in this paper used for detecting active circuit process, voltage, temperature (PVT) variation error. The detector can transfer AC input amplitude to corresponding DC voltage. Such DC output can be recognized and compared to determine whether active circuit needs to be compensated to eliminate the PVT variation error. The detection output range is from 100 mV to 680 mV, corresponding to input amplitude varying from 100 mV to 500 mV. The detective frequency range is 1.0 GHz to 10.0 GHz. The power consumption is 0.4 mW with 500 mV input amplitude and 6.0 GHz input frequency under 1.2 V power supply with 1 pF capacitive load.