# HGCROC3: the front-end readout ASIC for the CMS High Granularity Calorimeter

- Institution: CERN
- Department: Conferences
- Speaker: Frederic Dulucq
- Year: 2021
- Language: English
- Subjects: Physics, Engineering
- Source: [CERN](https://videos.cern.ch/record/3017875)
- Licence: [CERN](http://copyright.web.cern.ch)
- Who can watch: Tweens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

For the CMS HGCAL, the final version of the 72-channel front-end ASIC (HGCROC3) was submitted in December 2020. HGCROC3 includes low-noise/high-gain preamplifier/shapers, and a 10-bit 40 MHz SAR-ADC, which provides the charge measurement over the linear range of the preamplifier. In the saturation range a discriminator and TDC provide the charge information from TOT (200ns dynamic range, 50ps binning). A fast discriminator and TDC provide timing information to 25ps accuracy. The chip embeds all necessary ancillary services: bandgap circuit, PLL, threshold DACs. We present the experimental results on the latest and final version HGCROC3 received in April 2021..

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## Lectures

1. [HGCROC3: the front-end readout ASIC for the CMS High Granularity Calorimeter](https://invisiblenetwork.ai/learn/cern/3017875/d8bc428ba20b), 21 min (CERN's player)