TRIMMING OPERATIONAL AMPLIFIERS

TRIMMING OPERATIONAL AMPLIFIERS

Disclosed is a system that comprises an operational amplifier with adjustable operational parameters and a trimming module. The trimming module can adjust the operational parameters of the op-amp based on a memory value to compensate for an offset voltage of the op-amp. The trimming module can compr...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Doorenbos, Jerry Lee, Pulijala, Srinivas Kumar, Shaik, Munaf Hussain, Ivanov, Vadim Valerievich, Forster, Patrick
Format: Patent
Sprache:eng
Schlagworte:
AMPLIFIERS
BASIC ELECTRONIC CIRCUITRY
CODE CONVERSION IN GENERAL
CODING
DECODING
ELECTRICITY
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Beschreibung
Zusammenfassung:Disclosed is a system that comprises an operational amplifier with adjustable operational parameters and a trimming module. The trimming module can adjust the operational parameters of the op-amp based on a memory value to compensate for an offset voltage of the op-amp. The trimming module can comprise successive approximation register (SAR) logic that controls the memory value. The SAR logic can be configured to detect a given memory value that causes an output voltage of the op-amp to be within a predetermined voltage interval when applying a predetermined common mode voltage to inverting and non-inverting inputs of the op-amp.