Offset correction circuit for differential amplifiers

Details Offset correction circuit for differential amplifiers Offset correction circuit for differential amplifiers

1979-08-27

1981-03-10

Mullins, James B.

Amplifiers

With periodic switching input-output

307359, H03F 102

Patent

active

042557151

ABSTRACT:
The output of a differential amplifier, operating as a comparator, is coupled through a first switch to charge a small valued capacitor C.sub.1. The charge in the small capacitor can be coupled through a second switch to charge a larger value capacitor C.sub.2. The charge on the larger capacitor creates a voltage thereacross which is C.sub.1 /(C.sub.1 +C.sub.2) that which was initially across capacitor C.sub.1. The voltage across the capacitor C.sub.2 is coupled to the negative terminal of the differential amplifier and is lessened in value via a buffer and attenuator circuit. The positive terminal is coupled to ground. The output of the comparator would normally have a polarity based upon the sign of the "offset error" of the comparator less the voltage at the negative terminal.

REFERENCES:
patent: 4039963 (1977-08-01), Guillon et al.

Affiliated with

Also associated with

Rating

Offset correction circuit for differential amplifiers does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Offset correction circuit for differential amplifiers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Offset correction circuit for differential amplifiers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1296663