Low power ADC with fast zero suppression for balloon-borne experiment

Conference · Sun Aug 01 04:00:00 EDT 1993 · IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States)

OSTI ID:5946372

Anraku, Kazuaki; Imori, Masatosi ^[1]; Inaba, Susumu ^[2]

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1. Univ of Tokyo (Japan). Faculty of Science
2. National Lab. for High Energy Physics, Ibaraki (Japan)

The article describes a low power CAMAC ADC module with fast zero suppression. The module is developed to improve data acquisition rate for a balloon-borne detector. The module is of a single CAMAC width and includes sixteen charge-to-voltage converter (QVC) channels. Each channel has its own A/D converter. The QVC outputs are digitized simultaneously. The A/D converter continues digitization for 15 [mu]sec at longest. Then a micro-programmed sequencer, which is installed in the module, scans the channels, comparing the outputs of the A/D converters with prescribed thresholds. The outputs are stored together with channel numbers into data memory when the outputs are greater than the thresholds. The zero suppression completes in 3 [mu]sec, and zero-suppressed data become ready within 18 [mu]sec. The operation of the QVC circuit is repeatedly simulated on a workstation in order that the temperature dependence of the QVC circuit could be reduced without sacrificing performance.

• OSTI ID: 5946372
• Report Number(s): CONF-921005--
• Conference Information: Journal Name: IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States) Journal Volume: 40:4 part 1
• Country of Publication: United States
• Language: English

Related Subjects

440104* -- Radiation Instrumentation-- High Energy Physics Instrumentation
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
AIRSHIPS
ANALOG-TO-DIGITAL CONVERTERS
BALLOONS
CAMAC SYSTEM
DATA ACQUISITION
DESIGN
DRIFT CHAMBERS
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
EQUIPMENT
MEASURING INSTRUMENTS
MEMORY DEVICES
MULTIWIRE PROPORTIONAL CHAMBERS
PERFORMANCE
PROPORTIONAL COUNTERS
PULSE CIRCUITS
RADIATION DETECTORS
SCINTILLATION COUNTERS
TEMPERATURE DEPENDENCE
TRIGGER CIRCUITS