Psiroc
PIN Diodes, Silicon Strips and GEMs Read-Out Chip
Description
Psiroc is a 64-channel front-end ASIC designed to readout PIN diodes, silicon strips and GEMs, handling detector capacitances ranging from 0 up to few hundreds of pF.
Psiroc allows triggering down to 0.5 fC on sub-20pF detector capacitances and provides dual-gain energy measurement with excellent Signal-to-Noise Ratio on the high gain (SNR over 10 for 0.5 fC) and large dynamic range on the low gain. For input signals over few pC a channel-wise ToT output is also available. Psiroc can be programmed to output the shapers HG/LG, individual triggers or ToT signals (two output pins per channels). The preamplifier gain is adjustable from 125 mV/pC up to 4 V/pC.
Charge measurement is done with peak detectors but those can be used in a track & hold fashion thanks to an internal delay cell. Analog data are outputted on two multiplexed analog output and can be read-out with an external ADC. Shapers shaping time can be adjusted from 20 ns to 3 µs with a step of 20 ns up to 300 ns and a step of 200 ns up to 3 µs. Data acquisition can be done ASIC wide or channel-wise.
Channel-by-channel calibration on the trigger thresholds for time trigger and ToT can be done with individual 6-bit DACs.
Parameters
| Parameters | Value |
|---|---|
| TRLTechnology Readiness Level | 4 - ASIC validated in lab environment |
| Available versions | Psiroc 1: available March 2024 |
| Detector Read-Out | PIN Diodes, Silicon strips, GEMs |
| Number of Channel | 64 |
| Signal Polarity | Positive, Negative |
| Sensitivity | Trigger on 0.5 fC on both polarity |
| Timing Resolution | < 150 ps RMS @ Qin = 4 fC ; Cd/Cf = 20p/1p (pa gain = 1 V/pC) |
| Dynamic Range | Up to 5 pC with low gain charge measurement and up to 100 pC with ToT |
| Packaging & Dimension | BGA 20x20 mm2 |
| Power Consumption | 350 mW – Supply voltage : 1.2 V |
| Inputs | 64 analogue inputs |
| Outputs | - 2 outputs per channel, either :
- 2 multiplexed analogue 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 April 2024 - Psiroc + PicoTDC evaluation system : Available April 2024 |
Diagram
Psiroc 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 :
Downloads
Downloads
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.