A four-channel ADC on a VME board

Journal Article · Sat Dec 01 04:00:00 EST 1990 · IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (USA)

DOI:https://doi.org/10.1109/TNS.1990.574211· OSTI ID:5688684

Bassato, G; Ponchia, R ^[1]; Bassini, R; Boiano, C ^[2]

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1. INFN Lab. Nazionali di Legnaro, via Romea 4, 35020 Legnaro (IT)
2. INFN Sezione di Milano, via Celoria 16, 20133 Milano (IT)

A four-channel ADC for data acquisition in nuclear physics experiments has been developed on a VME board. The circuit architecture is a multistretcher configuration based on a fast conversion module. The board can operate either in sampling and in auto-trigger mode with an input range of 4.09% or 8.192 V; the risetime protection can vary from 1-32{mu}s. Many functions are software-selectable; the most significant are: the linear gate trigger mode, the risetime protection, and the settings of the low and high thresholds, independently for each channel. The conversion module is based on a two-step concept: an overall resolution of 12 bits, with a conversion time lower than 1 {mu}s, is obtained by means of two 8-bit flash ADC's. A sliding-scale compensation technique has been implemented in order to improve the differential linearity. The differential linearity error is less than 1%, while the integral linearity error is 0.023% over 98% of the dynamic range.

• OSTI ID: 5688684
• Journal Information: IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (USA), Journal Name: IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (USA) Vol. 37:6; ISSN 0018-9499; ISSN IETNA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426000* -- Engineering-- Components
Electron Devices & Circuits-- (1990-)
440000 -- Instrumentation
47 OTHER INSTRUMENTATION
DATA ACQUISITION
ELECTRONIC CIRCUITS
ENERGY
ERRORS
NUCLEAR PHYSICS
PHYSICS
RESOLUTION
THRESHOLD ENERGY