Title :
Low temperature characterization of CMOS operational amplifier ICs
Author :
Torres, Fernando ; Pastrana, Juan ; Colon, Ricardo ; Delgado, Edwin ; Ray, Biswajit
Author_Institution :
Dept. of Electr. & Comput. Eng., Puerto Rico Univ., Mayaguez, Puerto Rico
Abstract :
The performance of four different op-amps from three different manufacturers are compared at room temperature (300 K) and liquid nitrogen temperature (77 K) based on a high-pass filter circuit. The theoretical and experimental gain and input impedance as a function of frequency are reported. The bandwidth of the filter increased at 77 K compared to 300 K operation, for three out of four op-amp IC based high-pass filters. It might be possible to use commercially available CMOS op-amps at low temperatures
Keywords :
CMOS integrated circuits; high-pass filters; integrated circuit testing; operational amplifiers; 300 K; 77 K; CMOS operational amplifier IC; filter bandwidth; high-pass filter circuit; high-pass filters; input impedance; liquid nitrogen temperature; low temperature characterization; performance comparison; room temperature; Band pass filters; Bandwidth; Circuits; Cutoff frequency; Frequency response; Impedance; Magnetic separation; Nitrogen; Operational amplifiers; Temperature;
Conference_Titel :
Energy Conversion Engineering Conference, 1996. IECEC 96., Proceedings of the 31st Intersociety
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-3547-3
DOI :
10.1109/IECEC.1996.552942
