Title :
Adjustable hysteresis CMOS Schmitt triggers
Author :
Katyal, Vipul ; Geiger, Randall L. ; Chen, Degang J.
Author_Institution :
Dept. of Electr. & Comput. Eng., Iowa State Univ., Ames, IA
Abstract :
Adjustable hysteresis CMOS Schmitt trigger design strategies are investigated and two new inverter based designs are proposed. The sizing of the two feedback inverters controls the two trip points of the structure independently. By the addition of voltage controlled current sinking and/or sourcing transistors, the hysteresis window can be easily moved without changing its width. Moreover the new designs are immune to the kick-back noise coming from the succeeding blocks.
Keywords :
CMOS integrated circuits; invertors; trigger circuits; adjustable hysteresis CMOS Schmitt triggers; feedback inverters controls; hysteresis window; inverter based designs; sourcing transistors; voltage controlled current sinking; Design engineering; Digital filters; Hysteresis; Instruments; Inverters; Low voltage; MOS devices; Output feedback; Trigger circuits; Voltage control; Schmitt Trigger; hysteresis; inverter; trip point;
Conference_Titel :
Circuits and Systems, 2008. ISCAS 2008. IEEE International Symposium on
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4244-1683-7
Electronic_ISBN :
978-1-4244-1684-4
DOI :
10.1109/ISCAS.2008.4541823
