CMOS OSCILLATOR HAVING STABLE FREQUENCY WITH PROCESS, TEMPERATURE, AND VOLTAGE VARIATION

摘要

A clock signal generation circuit configured to generate the clock signal having a frequency that is maintained across variations in a number of operating conditions, such as changes in supply voltage, temperature and processing time. In an embodiment, the frequency spread of the generated clock signal of a PVT-compensated CMOS ring oscillator is configured to compensate for variations in the supply voltage, as well as for variations in process and temperature via a process and temperature compensation circuit. The PVT-compensated CMOS ring oscillator includes a regulated voltage supply circuit to generate a supply voltage that is resistant to variations due to changes in the overall supply voltage.

主权项

1. A device, comprising:
a node configured to receive a voltage signal; a first circuit coupled to the node and configured to generate a clock signal in response to the voltage signal; and a second circuit coupled to the first circuit and configured to alter the generated clock signal in response to an operating condition.