Title :
A low-power variable-gain front-end amplifier in a 0.25 μm CMOS technology
Author_Institution :
Ist. Nazionale di Fisica Nucl., Torino, Italy
Abstract :
This paper describes a front-end amplifier whose gain and shaping time are programmable. The circuit employs a two-stage architecture and has a second-order shaping function. The tunability of the amplifier is obtained by mean of CMOS switches that set the value of the passive components used in the feedback loop of the second stage. The shaping time can be changed from 30 ns to 130 ns and the gain from 10 mV/fC to 80 mV/fC. Fabricated in a 0.25 μm CMOS technology, the circuit occupies an area of 0.1 mm2, and dissipates a power of 2 mW from a 2.5 V supply.
Keywords :
CMOS integrated circuits; amplification; nuclear electronics; pulse amplifiers; pulse shaping circuits; 0.25 micron; 2 mW; 2.5 V; 30 to 130 ns; CMOS; front-end amplifier; low-power; power; shaping time; tunability; variable-gain; CMOS technology; Capacitance; Circuit noise; Filters; Leakage current; Paper technology; Pulse amplifiers; Pulse shaping methods; Radiation detector circuits; Radiation detectors;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2003.815131
