Design of low power 12bit 40MSPS SAR ADCs with a redundancy algorithm and digital calibration for high dynamic range calorimeter readout

M. Zeloufi 1 D. Dzahini 1 F. Rarbi 1 L. Gallin-Martel 1 J. Bouvier 1
1 LPSC - Laboratoire de Physique Subatomique et de Cosmologie
Abstract : We present two SAR ADCs using a generalized redundant search algorithm and offering the flexibility to relax the requirements on the DAC settling time. Two more bits of redundancy allow also a digital calibration, based on a code density analysis to compensate the capacitors mismatching effects. A monotonic switching algorithm is used for these prototypes saving about 70% of dynamic power consumption compared to conventional switching algorithm. A fully differential was used for both prototypes featuring 12bit 40MS/s in a CMOS 130nm 1P8M process
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Poster communications
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http://hal.in2p3.fr/in2p3-01292733
Contributor : Emmanuelle Vernay <>
Submitted on : Wednesday, March 23, 2016 - 4:25:28 PM
Last modification on : Tuesday, May 22, 2018 - 9:48:10 PM

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M. Zeloufi, D. Dzahini, F. Rarbi, L. Gallin-Martel, J. Bouvier. Design of low power 12bit 40MSPS SAR ADCs with a redundancy algorithm and digital calibration for high dynamic range calorimeter readout . 5th Common ATLAS CMS Electronic Workshop for LHC Upgrades (ACES 2016), Mar 2016, Geneva, Switzerland. ⟨in2p3-01292733⟩

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