Title :
Low-voltage power-efficient adaptive biasing for CMOS amplifiers and buffers
Author :
Baswa, S. ; López-Martín, A.J. ; Carvajal, R.G. ; Ramírez-Angulo, J.
Author_Institution :
Klipsch Sch. of Electr. & Comput. Eng., New Mexico State Univ., Las Cruces, NM, USA
Abstract :
Novel adaptive biasing techniques, suited for low-voltage operation, are presented. They provide small and accurately controlled quiescent currents, which are automatically boosted when an input signal is applied. Measurement results of an OTA using these techniques and fabricated in a 0.5 μm CMOS technology show a slew rate of more than 40 V/μs for an 80 pF load capacitance and a static power consumption of only 140 μW.
Keywords :
CMOS analogue integrated circuits; buffer circuits; capacitance; operational amplifiers; 0.5 micron; 140 muW; 80 pF; CMOS amplifiers; CMOS buffers; CMOS technology; OTA; capacitance; low-voltage operation; low-voltage power-efficient adaptive biasing; operational transconductance amplifier; quiescent current; slew rate; static power consumption;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20040191
