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VOLTAGE COMPARATOR WITH HYSTERESIS SUITABLE FOR LOW, SUPPLY REFERENCED THRESHOLDS

IP.com Disclosure Number: IPCOM000006146D
Original Publication Date: 1991-Apr-01
Included in the Prior Art Database: 2001-Dec-07

Publishing Venue

Motorola

Related People

Authors:
Gordon Allen David Harnishfeger

Abstract

The single supply voltage comparator circuit shown in Figure 1 is capable of operating with dual power supplies. However, whether single or dual supplies are used, it is well-suited for applications in which the reference voltage is near that of the most negative supply voltage. It can be easily adapted for applications which require the reference to be near that of the most positive supply voltage. The circuit is suitable for low power applications because the required reference voltage can be established with small bias currents and large resistances. Since it provides hysteresis, this comparator can operate reliably in noisy environments.