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Design techniques for a pipelined ADC without using a front-end sample-and-hold amplifier

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1 Author(s)
Dong-Young Chang ; Texas Instrum. Inc., Tucson, AZ, USA

Design techniques for a low-power pipelined analog-to-digital converters (ADC) without using a front-end sample-and-hold amplifier are presented. Two sampling topologies are compared that minimize aperture error by matching the time constant between signal paths. A digital correction expansion technique is also presented for multibit ADCs, which further increases tolerance to aperture error. Elimination of the front-end SHA can save more than half of the ADCs static power dissipation.

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Circuits and Systems I: Regular Papers, IEEE Transactions on  (Volume:51 ,  Issue: 11 )