A 130nm CMOS programmable operational amplifier

Start Page
29
End Page
32
Article Number
4738277
Citation
2008 NORCHIP, Tallinn, Estonia, 2008, pp. 29-32
Contribution to Conference
2008 NORCHIP  
Publisher DOI
10.1109/NORCHP.2008.4738277
Scopus ID
2-s2.0-62949215760
Publisher
IEEE
ISBN
978-1-4244-2492-4
978-1-4244-2493-1
In this work we present a programmable 1.2 V Operational Amplifier (OpAmp) realized in a standard 130 nm CMOS technology. The OpAmp is based on a 3 V rail-to-rail input/output topology. The experimental results show the feasibility of using higher voltage topologies in conjunction with multi-threshold (multi-Vth) process options for low voltage designs. The programming range extends from a low-noise to a low-power mode. In addition, a constant-gm stage has been added to the rail-to-rail input. In low-noise mode the OpAmp has a low input thermal noise voltage of 5.1 nV/√Hz and in lowpower mode a power consumption of only 203 μW. Over the whole programming range the OpAmp maintains unity-gain stability with its phase margin varying between 58° and 62° © 2008 IEEE.
DDC Class
621.3: Electrical Engineering, Electronic Engineering