On-chip Real-Time Power Supply Noise Detector

A new on-chip real-time noise detector that can be used for detecting voltage surges and droops on the internal power supply of VSLI circuits is presented. The noise detector is compact, and has the ability of detecting dc levels and high frequency on-chip transients of the power supply voltage. The detector has been implemented in a 90 nm CMOS technology, and has an area of 50times100 mum
²
. The measured results show that the detector can detect overshoots and undershoots of less than 1 ns, and as small as 20 mV