Charge integrator and encoder ASIC for readout of the CMS hadron calorimeter photodetectors
Conference
·
OSTI ID:2098
- Fermilab
A charge integrator and encoder ASIC is being developed at Fermilab for readout of the CMS hadron calorimeter photodetectors. The chip provides eight nonoverlapping ranges and is pipelined for deadtimeless operation. It is intended to be used with an FADC to digitize hybrid photodiode current pulses at 40 MHz. For each clock period, one range is selected depending on the signal magnitude, and the output of that range is fed to the FADC to form the mantissa. The selected range is encoded and output as a 3-bit digital exponent. Previous versions of this device have been designed for use with photomultipliers which can have high gain. Hybrid photodiodes have gains of only a few thousand so that a new version of the chip is needed which includes a current-mode preamplifier. The principle of the device is described and early results from a demonstrator project are presented.
- Research Organization:
- Fermi National Accelerator Laboratory, Batavia, IL
- Sponsoring Organization:
- USDOE Office of Energy Research (ER)
- OSTI ID:
- 2098
- Report Number(s):
- FERMILAB-Conf-98/288; ON: DE00002098
- Country of Publication:
- United States
- Language:
- English
Similar Records
A second generation charge integrator and encoder ASIC
Channel control ASIC for the CMS hadron calorimeter front end readout module
A fast, wide range charge integrator and encoder ASIC for photomultiplier tubes
Journal Article
·
Sat Jun 01 00:00:00 EDT 1996
· IEEE Transactions on Nuclear Science
·
OSTI ID:276481
Channel control ASIC for the CMS hadron calorimeter front end readout module
Conference
·
Thu Sep 26 00:00:00 EDT 2002
·
OSTI ID:801467
A fast, wide range charge integrator and encoder ASIC for photomultiplier tubes
Conference
·
Sun Aug 01 00:00:00 EDT 1993
· IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States)
·
OSTI ID:5780754