VERDI - Multi-channel Analog Readout for Radiation Detectors

VERDI is a multi-channel ASIC capable of reading out different type of radiation detectors (SDD, PMT, Si (Li) etc.) with both positive and negative signal polarities. The circuit includes 8 channels, each one composed by a Charge Sensitive Amplifier (CSA), a Shaping Amplifier, a Baseline Holder, a Peak Stretcher, and an output buffer.
Main Features
- Availability: bare die, QFP120, QFN80
- Physical size: 3.5 mm x 3.5 mm x ?? mm (bare die), 28 mm x 28 mm x 4 mm (QFP120), 12 mm x 12 mm x 0.8mm (QFN80)
- Reset: pulsed or continuous (with external zero-network)
- Mode: Normal, Low-Power (multiplexed output) or shut down
- Power consumption: 170 mW in low-power mode and 3mW in shut down mode
Applications
- Front-end JFET readout for radiation detector application
- Multi-element X and Gamma-ray detectors readout
- Nitrogen-cooled Ge and Si(Li) detectors, Silicon drift detectors (SDDs), Scintillation Detectors, Photomultipliers Tubes, etc.
VERDI Schematic
VERDI where to use
VERDI Technical Data
Parameter | Conditions | Value |
---|---|---|
Positive Supply Voltage, VDD | Supply Voltage | +1.7 V |
Nevative Supply Voltage, VSS | Supply voltage | -1.7 V |
Current | Low-power mode | 52 mA |
CSA compatibility | polarity | e-/h+ collection |
CSA compatibility | JFET gm | 2-45mS |
CSA compatibility | JFET Cgs | 0.45 - 25pF |
CSA Compatibility | Cfeedback | 0.050pF - 10pF |
CSA compatibility | Cdetector | 0.2pF-39pF |
CSA gain scale | Configurable by SPI | 20mV - 300mV |
Threshold voltage for reset, THR_PRE | Internally selectable or by external partition | from -1.5V to +1.5V |
SHAPING TIME | Configurable by SPI | 0.25us, 0.5us, 0.75us, 1.0us, 2.0us, 4.0us, 6.0us, 8.0us |
Baseline Holder, BLH | Configurable by SPI | Not active, High side, Low side, Low and High side |
Buffer Output | Configurable by SPI | RC waveform, Semi-Gaussian shaper, Peak stretcher waveform, GND |
Contact us
News & Events

XGLAB participates at 2020 Virtual IEEE Nuclear Science Symposium and Medical Imaging Conference
XGLab participates at the Virtual 2020 IEEE NSS MIC from the 2nd to the 5th November...Learn more
Licence agreement with Oxford Instruments regarding Cube
Berlin, Germany, October 7, 2020 - Bruker and Oxford Instruments have announced that they have reached a settlement on a patent related issue with Bruker’s Cube product The agreement licences...Learn more

XGLab Partecipates at 2019 APS/CNM User Meeting
XGLab participates at 2019 APS/CNM User Meeting taking place in Argonne, Illinois, USA, from the 6th to the 10th May...Learn more