Title :
A/D processing system for 64-element pixel detector
Author :
Turko, B.T. ; Beuville, E. ; Millaud, J. ; Yaver, H.
Author_Institution :
Lawrence Berkeley Lab., CA, USA
fDate :
6/1/1996 12:00:00 AM
Abstract :
A new, 8×8-element pixel detector array for time resolved protein crystallography has been developed at the Lawrence Berkeley National Laboratory (LBNL). Each element has its own on-chip charge sensitive preamplifier and shaper with a peaking time of 100 ns. A total of 64 parallel analog to digital processing channels are required to support the detector. We describe a low-cost, low-power AD processing system, comprising a fast peak-sensing amplifier/stretcher, followed by a slower 12-bit ADC. Each channel also includes a histogramming memory for a fully stand-alone operation of the system. Circuit performance and test data are also presented
Keywords :
analogue-digital conversion; detector circuits; nuclear electronics; preamplifiers; 12-bit ADC; 64-element pixel detector; 8×8-element pixel detector array; A/D processing system; fast peak-sensing amplifier/stretcher; histogramming memory; low-power AD processing system; on-chip charge sensitive preamplifier; parallel analog to digital processing channels; shaper peaking time; stand-alone operation; time resolved protein crystallography; Circuit testing; Counting circuits; Crystallography; Detectors; Laboratories; Noise shaping; Protein engineering; Pulse amplifiers; Sensor arrays; Voltage;
Journal_Title :
Nuclear Science, IEEE Transactions on
