Radioroc 2
Multi-purpose SiPM analogue read-out chip
Description
Radioroc 2 is a 64-channel front-end ASIC designed to readout silicon photo-multipliers (SiPM).
Radioroc 2 allows triggering down to 1/3 p.e. and provides dual-gain energy measurement with excellent Signal-to-noise ratio on the high gain (SNR over 10 for single p.e.) and large dynamic range on the low gain. Moreover, Radioroc 2 can output the 64-channel triggers with jitter expected as low as 35 ps FWHM on a single p.e. (ASIC only). Photo-counting is foreseen over 100 MHz.
An adjustment of the SiPM high-voltage (gain) is possible using a channel-by-channel 8-bit DAC connected to the ASIC inputs. Channel-by-channel calibration on the trigger threshold is also possible thanks to 6-bit DACs. Radioroc can be calibrated using the dark noise of the SiPM.
Timing resolution better than 35 ps FWHM is possible along with 1% linearity energy measurement up to 2000 p.e, the dynamic range being limited by the 1.2 V power supply on the input analogue pad. The power consumption is 3.3 mW per channel.
Parameters
| Parameters | Value |
|---|---|
| TRLTechnology Readiness Level | 5 - First measurement conclusive in lab |
| Available versions | - Radioroc 1 : discontinued - Radioroc 2 : available |
| Detector Read-Out | SiPM, SiPM array |
| Number of Channel | 64 |
| Signal Polarity | Positive |
| Sensitivity | Trigger on first photo-electron |
| Timing Resolution | Better than 55 ps FWHM on single photo-electron (measured) |
| Dynamic Range | up to 2000 photo-electron 106 SiPM gain - Peaking time from 20ns to 2us for PSD |
| Packaging & Dimension | -FC-BGA 516 20x20mm (Low-inductance flip chip) |
| Power Consumption | 310 mW - supply voltage 1.2V |
| Inputs | 64 analogue inputs with independant SiPM HV adjustments |
| Outputs |
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| Internal Programmable Features | - 3 trigger threshold tuning (10bits) - channel-by-channel gain and shaping time adjustment (τ = 20 ns to 3 µs) - individual trigger masking and cell powering. |
| Evaluation systems | - Evaluation board : Available - Radioroc + PicoTDC evaluation system : Available April 2024 |
Diagram
Radioroc 2 is a GenerIC family IC
GenerIC is a new read-out chip family by Weeroc. GenerIC features fast flip-chip packaged integrated circuits pin-to-pin compatible one with another. Changing detector and its front-end electronic become straightforward with GenerIC family. Pin to pin compatibility allow keeping the same front-end electronics and change detector and front-end ASIC while keeping downstream data stream identical. GenerIC makes easy multi-detector read-out by having a common read-out scheme independant of the detector. Check the GenerIC family :
Evaluate Radioroc 2
Use our open source evaluation system to build your proof of concept. Our evaluation systems are fully open. We provide the schematic that can be used as a reference design, we provide an open source firmware coded in VHDL and an open source software coded in Python.
Weeroc evaluation system features 64 channels of read-out electronics, input is a convenient HE10 connector allowing simple interface with detectors. Output is USB to a computer. Software and firmware allow easy and user-friendly programming of Radioroc simple calibration and straight-forward data acquisition.
Downloads
Downloads
Radioroc 2 is used by
DISTRIBUTION NETWORK
All weeroc products are distributed worldwide by CAEN.
Please contact your local representative or get in touch with us.
Design review
Weeroc provide free support to review your board design integrating one of our ASIC. Get in touch with our engineering team to ensure a first-time-good design of your front-end electronics.