Title :
Monolithic JFET preamplifier with nonresistive charge reset
Author :
Manfredi, P.F. ; Re, V. ; Speziali, V.
Author_Institution :
Dipartimento di Elettronica, Pavia Univ., Italy
fDate :
8/1/1998 12:00:00 AM
Abstract :
This paper shows how a monolithic JFET preamplifier for spectrometry applications can be upgraded by introducing a nonresistive reset. It was found that the charge reset which employs a forward-biased gate-to-source junction of the input JFET suits this case best. The introduction of the nonresistive feedback is important in two respects. First, it puts into better evidence the intrinsic noise limitations of the monolithic preamplifier. Second, it opens up a new perspective in the design of monolithic preamplifiers for very high-resolution X-ray applications
Keywords :
X-ray spectroscopy; junction gate field effect transistors; monolithic integrated circuits; nuclear electronics; semiconductor device noise; X ray spectrometry; forward-biased gate-to-source junction; intrinsic noise; monolithic JFET preamplifier; nonresistive charge reset; nonresistive feedback; Capacitance; Detectors; Feedback; Noise reduction; Preamplifiers; Radio frequency; Resistors; Signal to noise ratio; Spectroscopy; X-ray applications;
Journal_Title :
Nuclear Science, IEEE Transactions on
