Frequency-locked integrated CMOS oscillator design with resistive reference

The purpose of this thesis is to introduce a design for a CMOS oscillator, that is practically insensitive to temperature and line voltages and conservative in power consumption.Also presented are the details of a band-gap reference voltage reference and a beta-multiplier current reference as needed for the proper operation of the oscillator. Design and characterization of the proposed oscillator has been performed for XFAB XH018, 0.18 μm CMOS technology. The output of the oscillator provides a square wave of 545.5 kHz at room temperature with typical conditions. Oscillator output has achieved stable frequency within the temperature range -40 C 85 C and for +- 5 percent line voltage variation. The circuit satisfies the specifications by consuming only 5 μWand not more than 0.65 percent frequency variation. The design has also been verified in all process corners and distribution in process and matching for 3 sigma.