The readout system for the new TRACE detector requires monitorization and sampling of all pulses in a large number of channels with very strict space and power consumption restrictions for the front-end electronics and cabling. A triggerless solution has been chosen involving front-end analog memories that sample a 1 μs window of the waveform of any valid pulses at 200 MHz while performing zero suppression and serialization tasks. An analog memory ASIC named PLAS (for PipeLined Asymmetric SCA) is presented that allows pulse capture with no dead time in any channel while reducing die area requirements for high input channel counts. The circuit is based on a novel architecture where the typical Switched Capacitor Array (SCA) structure is partitioned into two asymmetric stages and FIFO queue-like control circuitry is introduced for captured data. The ASIC has been designed in 0.18 μm CMOS technology with 32 independent, self-triggered input channels and a size of 3.5 × 3.9mm2. Simulations predict figures around 100MHz bandwidth, 12 ENOB and 10 mW per channel.
PLAS: A compact, self-triggered, dead time-less, high channel count analog memory ASIC for TRACE / R.J. Aliaga, V. Herrero-Bosch, S. Capra, J.A. Duenas, A. Pullia, A. Gadea, D. Mengoni (IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD). - In: 2015 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)[s.l] : IEEE, 2016. - ISBN 9781467398626. - pp. 1-5 (( convegno IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC) tenutosi a San Diego nel 2015.
|Titolo:||PLAS: A compact, self-triggered, dead time-less, high channel count analog memory ASIC for TRACE|
|Parole Chiave:||Analog memory; ASIC; dead time; detector readout; front; end electronics; Switched Capacitor Array (SCA); triggerless data acquisition; waveform sampling|
|Settore Scientifico Disciplinare:||Settore ING-INF/01 - Elettronica|
|Data di pubblicazione:||2016|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1109/NSSMIC.2015.7581779|
|Tipologia:||Book Part (author)|
|Appare nelle tipologie:||03 - Contributo in volume|