Title :
A 500-nW floating-gate amplifier with programmable gain
Author :
Furth, Paul M. ; Om´mani, Henry A.
Author_Institution :
Dept. of Electr. & Comput. Eng., New Mexico State Univ., Las Cruces, NM, USA
Abstract :
Micro-power voltage amplification is achieved using capacitive feedback via multiple-input floating-gate transistors. The proposed amplifier uses self-biased cascode transistors operating in the subthreshold region for near rail-to-rail output voltage range. Simulations show a 72 kHz GBW when driving 1 pF. Power consumption is 500 nW per stage of gain. Chip measurements of a 4-stage programmable-gain amplifier implemented in a 1.2 μm technology confirm functionality of the design
Keywords :
CMOS analogue integrated circuits; feedback amplifiers; gain control; low-power electronics; operational amplifiers; 1.2 micron; 500 nW; capacitive feedback; floating-gate amplifier; four-stage amplifier; micro-power voltage amplification; multiple-input floating-gate transistors; programmable gain; rail-to-rail output voltage range; self-biased cascode transistors; subthreshold region operation; CMOS process; Capacitors; Energy consumption; Negative feedback; Operational amplifiers; Rails; Remote sensing; Resistors; Transconductors; Voltage;
Conference_Titel :
Circuits and Systems, 1998. Proceedings. 1998 Midwest Symposium on
Conference_Location :
Notre Dame, IN
Print_ISBN :
0-8186-8914-5
DOI :
10.1109/MWSCAS.1998.759454
