Title :
Highly linear wide tuning range CMOS transconductor operating in moderate inversion
Author :
Ramirez-Angulo, Jaime ; Durbha, Chandrika ; López-Martín, Antonio J. ; Carvajal, Ramon G.
Author_Institution :
Klipsch Sch. of Electr. & Comput. Eng., New Mexico State Univ., Las Cruces, NM, USA
Abstract :
A new CMOS transconductor with wide transconductance tuning range and very low distortion is presented. The input stage features a highly linear conversion of the input voltage into current form. Electronically programmable current mirrors able to operate in weak or moderate inversion provide a continuous transconductance tuning range of two decades without affecting the large input signal range available. Measurement results of a prototype fabricated in a 0.5μm CMOS technology shows a THD of -66.5dB for a 100 kHz differential input of 2Vpp.
Keywords :
CMOS analogue integrated circuits; active networks; circuit tuning; current mirrors; programmable circuits; 0.5 micron; 100 kHz; CMOS technology; CMOS transconductor; electronically programmable current mirrors; linear conversion; moderate inversion; transconductance tuning range; CMOS technology; Circuit optimization; Decision support systems; Linearity; Mirrors; Resistors; Transconductance; Transconductors; Tuning; Voltage;
Conference_Titel :
Circuits and Systems, 2004. ISCAS '04. Proceedings of the 2004 International Symposium on
Print_ISBN :
0-7803-8251-X
DOI :
10.1109/ISCAS.2004.1328317
