PIN Diodes, Silicon Strips and GEMs Read-Out Chip
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.
| TRL Technology Readiness Level | 4 - ASIC validated in lab environment |
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| Available versions |
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| 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 |
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| Power Consumption |
350 mW – Supply voltage : 1.2 V |
| Inputs | 64 analogue inputs |
| Outputs |
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| Internal Programmable Features |
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| Evaluation systems |
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