3 Years Warranty
LIROC
New
SiPM Analogue Read-out Chip for Lidar and Photon Counting Application
Features
- Optimized for SiPM
- Number of channels: 64
- Outputs: 64 LVDS triggers, 1 64-channel NOR
- Input Polarity: Positive, Negative
Overview
Liroc is a 64-channel front-end ASIC designed to readout 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 300MHz 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.
Technical Specifications
- TRL (Technology Readiness Level)
4 – ASIC validated in lab environment
- Available versions
1: Discontinued
2: Available
- Detector Read-Out
SiPM
- Number of Channel
64
- Signal Polarity
Positive, Negative
- Sensitivity
Trigger on 1/3 photo-electron
- Timing Resolution
Better than 20ps FWHM on single photo-electron, better than 3ns on single photo-electron
- Dynamic Range
Over 300MHz photon counting rate
- Packaging & Dimension
BGA 516 20x20mm
Flip-Chip Low-inductance packaging technology
- Power Consumption
210 mW – supply voltage 1.2V
- Inputs
64 analogue inputs with independent SiPM HV adjustments
- Outputs
- 64 LVDS trigger
- 164-channel NOR
- Internal Programmable Features
- 64 HV adjustment for SiPM (64 x 6 bit), trigger threshold programming (10bits)
- 64 x 7 bit channel-wise threshold adjustment
- ASIC-wise polarity selector
- Channel-wise pole zero cancellation
- individual trigger masking and cell powering
- Evaluation systems
- Liroc Evaluation system
- Liroc PicoTDC read-out system
Compare
Compare with Weeroc chip.
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Ordering Options
| Code | Description |
|---|---|
| WWLIROC1BAAA | LIROC 1 SiPM Analogue Read-out Chip for Lidar and Photon Counting Application RoHS |
| WWLIROC2BAAA | LIROC 2 SiPM Analogue Read-out Chip for Lidar and Photon Counting Application RoHS |
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