Scientific instrumentation SiPM read-out chip
Citiroc 1A is a 32-channel front-end ASIC designed to readout silicon photo-multipliers (SiPM) for scientific instrumentation application.
Citiroc 1A allows triggering down to 1/3 pe and provides the charge measurement with a good noise rejection. Moreover, Citiroc 1A outputs the 32-channel triggers with a high resolution timing (better than 100 ps).
An adjustment of the SiPM high-voltage is possible using a channel-by-channel DAC connected to the ASIC inputs. That allows a fine SiPM gain and dark noise adjustment at the system level to correct for the non-uniformity of SiPMs. CITIROC 1A can be calibrated using a unique calibration signal.
Timing measurement better than 100 ps RMS jitter is measured on single photo-electron along with 1% linearity energy measurement up to 2500 p.e. The power consumption is 225mW/ASIC when all stages are ON.
| TRL Technology Readiness Level | 8 - Full system using ASIC running - learn more |
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| Available versions |
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| Detector Read-Out | SiPM, SiPM array |
| Number of Channel | 32 |
| Signal Polarity | Positive |
| Sensitivity | Trigger on 1/3 photo-electron |
| Timing Resolution | better than 100ps RMS on single photo-electron |
| Dynamic Range | 0-400 pC i.e 2500 photo-electrons @ 106 SiPM gain |
| Packaging & Dimension |
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| Power Consumption |
225 mW when all stages on - supply voltage 3.3V |
| Inputs | 32 voltage inputs with independant SiPM HV adjustments |
| Outputs |
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| Internal Programmable Features |
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| Evaluation systems |
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