Title :
A linear differential CMOS V×I converter
Author :
Schneider, M.C. ; Filho, S. Noceti ; Robert, R.N.G.
Author_Institution :
Dept. de Engenharia Electrica, Univ. Federal de Santa Catarina, Florianopolis, Brazil
Abstract :
A novel CMOS circuit is proposed for implementing a linear V ×I converter based on the square-law characteristic of MOS transistors. An analysis of the circuit concerning input voltage limits, frequency response, and transistor mismatches is presented. Simulation results show that less than 1% total harmonic distortion of the output current can be obtained for differential input signals up to 3.8 Vp-p and supply voltages of ±5 V. A careful layout of the circuit must be planned in order to avoid harmonic distortion, especially the second harmonic, due to transistor mismatches
Keywords :
CMOS integrated circuits; convertors; harmonics; linear integrated circuits; linear network synthesis; CMOS circuit; MOS transistors; SPICE circuit simulation program; differential input signals; frequency response; harmonic distortion; input voltage limits; linear differential CMOS V I convertor; second harmonic; square-law characteristic; supply voltages; transistor mismatches; Circuit optimization; Frequency; Impedance; MOS devices; MOSFETs; Mirrors; Temperature control; Transconductance; Transconductors; Voltage control;
Conference_Titel :
Circuits and Systems, 1990., IEEE International Symposium on
Conference_Location :
New Orleans, LA
DOI :
10.1109/ISCAS.1990.111955
