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US 6,636,084 B2Granted
Sample and hold circuit
AssigneeTexas Instruments Incorporated
InventorMaher M. Sarraj
Life of this patent
Estimating the term…
Abstract
A sample and hold circuit includes an operational amplifier and a plurality of switched capacitors, the switched capacitors introducing a closed loop gain of one-half for the operational amplifier.
Claims20
A differential sample and hold circuit, the sample and hold circuit comprising an operational amplifier, the operational amplifier having a closed loop gain of one-half, the sample and hold circuit further comprising two feedback paths.
A differential sample and hold circuit, the differential sample and hold circuit comprising:
- an operational amplifier;
- and
- a plurality of switched capacitors coupled to the operational amplifier, the switched capacitors introducing a closed loop gain of one-half for the operational amplifier.
A differential sample and hold circuit, the sample and hold circuit comprising:
- an operational amplifier, the operational amplifier having a first input and a second input and an output;
- a first feedback path of the operational amplifier, the first feedback path including a first capacitor coupled to the first input of the operational amplifier and a first switch coupled to the output of the operational amplifier;
- a second feedback path including a second capacitor coupled to the first input of the operational amplifier and a second switch coupled to the output of the operational amplifier;
- and
- a third capacitor coupled to the first input of the operational amplifier.
2 more elements
Dependencies are inferred from the claim text.