A General Purpose 2MHz 68µW Temperature Compensated Reference Clock Oscillator

This paper presents a general-purpose 2MHz Reference Clock Oscillator that features temperature compensation in the range of -40
^◦
C to 70
^◦
C. In other words, through a feedback loop and the use of temperature-stable I
ref
and V
ref
sources, it manages to maintain a stable frequency despite temperature variations. It consists of a Current Starved Ring Voltage Controlled Oscillator, a Frequency to Voltage Converter and a Discrete Integrator. The proposed architecture is designed to be area efficient, operating at low power consumption (68µW), and at a low supply voltage (1V). The architecture is simulated using the Cadence IC Suite in a TSMC 90nm CMOS process.