NDLI: A low-power variable-gain front-end amplifier in a 0.25 /spl mu/m CMOS technology

Content Provider	IEEE Xplore Digital Library
Author	Rivetti, A.
Copyright Year	2003
Description	Author affiliation: Ist. Nazionale di Fisica Nucl., Torino, Italy (Rivetti, A.)
Abstract	This paper describes a front-end amplifier with programmable gain and shaping time. The amplifier consists of two stages. The first stage is a charge sensitive preamplifier with pole-zero cancellation. The second stage is a transimpedance amplifier and implements a second order shaping function. The tunability of the circuit is achieved selecting, by mean of digital control signals, the value of the components employed in the feedback loop of the second stage. For a given shaping time, the gain can be changed with accuracy better than 3% without any tuning of the transconductance of the core amplifiers. Implemented in a 0.25 /spl mu/m CMOS technology, the circuit occupies an area of 0.1 mm/sup 2/ and dissipates 2 mW from a 2.5 V power supply.
Starting Page	308
Ending Page	311
File Size	340947
Page Count	4
File Format	PDF
ISBN	0780376366
DOI	10.1109/NSSMIC.2002.1239322
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-11-10
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	CMOS technology Pulse amplifiers Radiation detectors Filters Capacitance Silicon Leakage current Circuit noise Pulse shaping methods Resistors
Content Type	Text
Resource Type	Article

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A low-power variable-gain front-end amplifier in a 0.25 /spl mu/m CMOS technology