Method for single-ended offset compensation of an...

Details Method for single-ended offset compensation of an... Method for single-ended offset compensation of an...

2007-08-21

2007-08-21

Mottola, Steven J. (Department: 2817)

Amplifiers

With periodic switching input-output

C330S259000

Reexamination Certificate

active

11128250

ABSTRACT:
The present invention provides a method for single-ended compensation of an operational amplifier, which comprises: designing an operational amplifier having a single-ended offset style, preparing a common-mode circuit, a switch circuit, a comparator, a digital circuit and a compensation circuits. When a single-ended offset voltage of the operational amplifier is converted, output of the comparator will change state and will be detected by the digital circuit, so that the digital circuit will fix a group of digital signals, and instruct the switch circuit to block an average signal of the common-mode circuit, allowing a set of double-end input signals to be inputted to the operational amplifier directly.

REFERENCES:
patent: 6882218 (2005-04-01), Gupta

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