High precision (14 bit), high density (octal) analog to digital converter for spectroscopy applications

Subramaniam, E. T.; Jain, Mamta; Bhowmik, R. K.; Tripon, Michel
October 2008
Review of Scientific Instruments;Oct2008, Vol. 79 Issue 10, p103503
Academic Journal
Nuclear and particle physics experiments with large number of detectors require signal processing and data collection strategies that call for the ability to collect large amount of data while not sacrificing the precision and accuracy of the data being collected. This paper deals with the development of a high precision pulse peak detection, analog to digital converter (ADC) module with eight independent channels in plug-in daughter card motherboard model, best suited for spectroscopy experiments. This module provides multiple channels without cross-talk and of 14 bit resolution, while maintaining high density (each daughter card has an area of just 4.2″×0.51″) and exhibiting excellent integral nonlinearity (≤±2 mV or ±0.02% full scale reading) and differential nonlinearity (≤±1%). It was designed, developed and tested, in house, and gives added advantages of cost effectiveness and ease of maintenance.


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