SiPM-based LIDAR read-out chip
Liroc is a 64-channel front-end ASIC designed to read-out silicon photo-multipliers (SiPM) for LIDAR application.
Liroc allows triggering down to 1/3 p.e. and provides low-voltage differential trigger output for each channel with an excellent timing resolution (better than 20ps FWHM) and excellent double-peak separation (100% efficiency on 5ns separated single photo-electrons). Liroc allows fast single photon counting over 100MHz per channel.
An adjustment of the SiPM high-voltage (gain) is possible using a channel-by-channel 6-bit DAC connected to the ASIC inputs. Channel-by-channel calibration on the trigger threshold is also possible thanks to 7-bit DACs. Liroc can be calibrated using the dark noise of the SiPM.
Liroc features a GHz measurement line composed of an RF preamplifier woth pole zero cancellation followed by a fast discriminator and low swing LVDS fast driver.
|TRL Technology Readiness Level||4 - ASIC validated in lab environment|
|Detector Read-Out||SiPM, SiPM array|
|Number of Channel||64|
|Signal Polarity||Both Positive and Negative|
|Sensitivity||Trigger on 1/10 photo-electron|
Double peak separation : better than 5ns on single photo-electron
Time resolution : better than 20ps FWHM on single photo-electron
|Dynamic Range||up to 15 photo-electron with ToT @ 106 SiPM gain|
|Packaging & Dimension||
210 mW - supply voltage 1.2V
|Inputs||64 voltage inputs with independant SiPM HV adjustments|
|Internal Programmable Features||
Useful links :