Method and device for managing the time transition of a CMOS logic circuit as a function of temperature

摘要

A method includes generation of a first current proportional to absolute temperature and formation of a second current representative of the temperature variation of the threshold voltages of the transistors of the inverter and limited to a fraction of the first current. This fraction is less than one. The inverter is supplied with a supply current equal to the first current minus the limited second current.

主权项

1. A method for operating a CMOS logic circuit that comprises a PMOS transistor and an NMOS transistor, the method comprising:
generating a first current proportional to absolute temperature; forming a second current representative of a temperature variation of threshold voltages of the PMOS and NMOS transistors of the logic circuit; using a current limiter to control the second current to be limited to a fraction of the first current, the fraction being less than one; and supplying the CMOS logic circuit with a supply current equal to the first current minus the second current.