A 12bits 40MSPS SAR ADC with a redundancy algorithm and digital calibration for the ATLAS LAr calorimeter readout

Abstract : We present a SAR ADC with a generalized redundant search algorithm offering the flexibility to relax the requirements on the DAC settling time. The redundancy also allows a digital background calibration, based on a code density analysis, to compensate for the capacitor mismatch effects. The total number of capacitors used in this architecture is limited to one half of the one in a classical SAR design. Only 211 unit capacitors were necessary to reach 12 bit resolution, and the switching algorithm is intrinsically monotonic. The design is fully differential featuring 12 bit 40 MS/s in a CMOS 130 nm 1P8M process.
Type de document :
Poster
Topical Workshop on Electronics for Particle Physics (TWEPP 2015), Sep 2015, Lisbon, Portugal. Journal of Instrumentation, 11 (01), pp.C01030 2016, 〈10.1088/1748-0221/11/01/C01030〉
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http://hal.in2p3.fr/in2p3-01214020
Contributeur : Emmanuelle Vernay <>
Soumis le : vendredi 9 octobre 2015 - 15:46:59
Dernière modification le : jeudi 11 janvier 2018 - 06:13:09

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M. Zeloufi. A 12bits 40MSPS SAR ADC with a redundancy algorithm and digital calibration for the ATLAS LAr calorimeter readout. Topical Workshop on Electronics for Particle Physics (TWEPP 2015), Sep 2015, Lisbon, Portugal. Journal of Instrumentation, 11 (01), pp.C01030 2016, 〈10.1088/1748-0221/11/01/C01030〉. 〈in2p3-01214020〉

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