التفاصيل البيبلوغرافية
| العنوان: |
A 12-bit SAR ADC integrated on a multichannel silicon drift detector readout IC. |
| المؤلفون: |
Schembari, F.1,2 filippo.schembari@polimi.it, Bellotti, G.1,2, Fiorini, C.1,2 |
| المصدر: |
Nuclear Instruments & Methods in Physics Research Section A. Jul2016, Vol. 824, p353-355. 3p. |
| مصطلحات موضوعية: |
*SUCCESSIVE approximation analog-to-digital converters, *SILICON detectors, *INTEGRATED circuits, *X-rays, *GAMMA rays, *FABRICATION (Manufacturing) |
| مستخلص: |
A 12-bit analog-to-digital converter (ADC) addressed to Silicon-Drift Detectors (SDDs) multichannel readout ASICs for X- and gamma-ray applications is presented. Aiming at digitizing output multiplexed data from the upstream analog filters banks, the converter must ensure 11-bit accuracy and a sampling frequency of about 5 MS/s. The ADC architecture is the charge-redistribution (CR) successive-approximation register (SAR). A fully differential topology has also been chosen for better rejection of common-mode noise and disturbances. The internal DAC is made of binary-scaled capacitors, whose bottom plates are switched by the SAR logic to perform the binary search of the analog input value by means of the monotonic switching scheme. The A/D converter is integrated on SFERA, a multichannel ASIC fabricated in a standard CMOS 0.35 μm 3.3 V technology and it occupies an area of 0.42 mm 2 . Simulated static performance shows monotonicity over the whole input–output characteristic. The description of the circuit topology and of inner blocks architectures together with the experimental characterization is here presented. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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