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 |
|
| 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
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Downloads
Radioroc 2 is used by
DISTRIBUTION NETWORK
All weeroc products are distributed worldwide by CAEN.
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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.