2006
DOI: 10.1007/s10470-006-8394-0
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Switched-capacitor track-and-hold amplifier with low sensitivity to op-amp imperfections

Abstract: This paper describes a high-precision switchedcapacitor (SC) track-and-hold amplifier (THA) stage. It uses a novel continuous-time correlated double sampling (CDS) scheme to desensitize the operation to amplifier imperfections. Unlike earlier predictive-CDS THAs, the circuit does not need a sample-and-held input signal for its operation. During the tracking period, an auxiliary continuous-time signal path is established, which predicts the output voltage during the holding period. This allows accurate operatio… Show more

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Cited by 4 publications
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References 6 publications
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