An on-chip CMOS relaxation oscillator with power averaging feedback using a reference proportional to supply voltage

On-chip reference oscillators are required for low-cost single-chip applications including biomedical sensors, microcomputers, high-speed interfaces such as DDR l/F and HDMI (for initial negotiation), and SoCs. RC oscillators (including relaxation oscillators) were developed to realize on-chip oscillators with standard CMOS processes. In this paper, a power-averaging feedback (PAF) concept for accurate oscillators with low power and small area is presented.