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REDUCTION OF HYSTERESIS IN FIXED THRESHOLD SCHMITT TRIGGER

IP.com Disclosure Number: IPCOM000005420D
Original Publication Date: 1980-Aug-01
Included in the Prior Art Database: 2001-Oct-10

Publishing Venue

Motorola

Related People

Authors:
Russell Marten

Abstract

The CMOS hex Schmitt trigger can be a very useful tool in the design of audio frequency circuits, such as limiters, frequency and signal amplitude detectors except for one inherent limitation. The magnitude of the hysteresis is a fixed ratio of the supply voltage (typically 113 of supply). Since the supply voltage for a design is usually a given, the application of this device for the circuits mentioned above would be severely limited.