Title :
A 130nm CMOS Programmable Operational Amplifier
Author :
Tomasik, Jakob M. ; Hafkemeyer, Kristian M. ; Galjan, Wjatscheslaw ; Schroeder, Dietmar ; Krautschneider, Wolfgang H.
Author_Institution :
Inst. of Nanoelectron., Hamburg Univ. of Technol., Hamburg, Germany
Abstract :
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 low-power mode a power consumption of only 203 ¿W. Over the whole programming range the OpAmp maintains unity-gain stability with its phase margin varying between 58° and 62°.
Keywords :
CMOS integrated circuits; operational amplifiers; 130 nm CMOS programmable operational amplifier; input thermal noise voltage; low voltage designs; multi threshold process; power consumption; Analog circuits; CMOS analog integrated circuits; CMOS technology; Circuit topology; Low voltage; Nanoelectronics; Operational amplifiers; Phase noise; Rail to rail inputs; Threshold voltage;
Conference_Titel :
NORCHIP, 2008.
Conference_Location :
Tallinn
Print_ISBN :
978-1-4244-2492-4
Electronic_ISBN :
978-1-4244-2493-1
DOI :
10.1109/NORCHP.2008.4738277
