공정, 전압, 온도 보상 회로를 이용한 On-Chip CMOS Oscillator

In this article, process voltage temperature (PVT) compensated on-chip oscillator is implemented by using proportional to absolute temperature (PTAT) circuit and process compensator. Process compensator circuit based on current subtracter and PTAT circuit are proposed for compensation of oscillation frequency to cope with process variation and temperature variation. All circuit can operate in the range of 3.5~5 V supply voltage. It can be applied to PVT insensitive low frequency clock reference generator.