About
128-channel “general purpose” charge sensitive amplifier. Each channel features buffered preamplifiers, a shaper with sample/hold, multiplexed analogue readout and calibration facilities. In addition, each channel has a “fast” shaper that gives a trigger signal. The analogue value and the address of the triggering channels are read out. The ASIC can output all channels, only triggered, or triggered channels with neighbors. Each channel has input leakage current compensation automatically adjusted in each preamplifier channel. This ASIC can be used in parallel with many ASICs, sharing all output lines and some control lines.
Publications
A. Studen et al., “A silicon PET probe“, Nuclear Instruments and Methods in Physics Research, Volume 648 (2011)
Product Features
Detectors | Si, hybrid photon detector (HPD) |
Detectors | Si, hybrid photon detector (HPD) |
Application | Counting, Imaging |
Number of inputs | 128 |
Input charge range | ±30 fC |
Shaping time | 500ns (VA), 50ns (TA) |
Nominal capacitive load | 10 pF |
Equivalent Noise Charge (ENC) | 70e + 12e/pF |
Trigger threshold | Programmable by 5-bit DAC |
Trigger outputs | Digital address of triggering channel |
Outputs | Multi-hit, multi-plexed amplitude, differential current, serial analogue, sparse readout |
Test and calibration | Internal calibration circuit |