Micrel, Incorporated

Jonathan Crandall

William Andrew Burkland

A level shifter circuit includes two parallel current paths respectively controlled by switch transistors, a Wilson current mirror circuit, and a slew rate control circuit to selectively couple an output node either to a high (first) voltage source or to a ground (second voltage) source in response to differential input control signals signal. When the output node reaches a stable (high or low) voltage level, the low voltage on one of the current paths turns off a Wilson current mirror transistor in the other current path, thereby preventing quiescent current during stable periods. An optional cascode transistor is added to facilitate fabrication using low threshold voltage transistors.

Growing community of inventors

Huxley, IA, United States of America

Jonathan Crandall