Cascode amplifiers with low-gain variability using body-biasing temperature and supply compensation

Author

Pereira, N. ; Oliveira, Leonardo B. ; Goes, Johannes ; Oliveira, Juliano

Author_Institution

Dept. of Electr. Eng. (DEE), Univ. Nova de Lisboa, Monte da Caparica, Portugal

fYear

2013

fDate

20-22 June 2013

Firstpage

209

Lastpage

212

Abstract

This paper presents a simple circuit technique to reduce gain variability with temperature in cascode amplifiers using a body-biasing scheme, and at the same time, enhance the overall gain of the amplifier. Simulation results of a standard telescopic-cascode amplifier, in two different nanoscale CMOS technologies (130 nm and 65 nm) show that it is possible to obtain supply-and-temperature-compensation. The simulated DC gain has low variability (below ± 0.5 dB) while it is enhanced by 3 dB. The required auxiliary biasing circuit dissipates less than 5% of the main amplifier circuit.

Keywords

CMOS analogue integrated circuits; amplifiers; nanoelectronics; DC gain; auxiliary biasing circuit; body-biasing temperature; cascode amplifiers; low-gain variability; nanoscale CMOS technologies; size 130 nm; size 65 nm; supply-and-temperature-compensation; telescopic-cascode amplifier; CMOS integrated circuits; CMOS technology; Gain; Simulation; Standards; Transconductance; Transistors; CMOS analog circuits; PVT compensation; amplifier; body-biasing; cascode;

fLanguage

English

Publisher

ieee

Conference_Titel

Mixed Design of Integrated Circuits and Systems (MIXDES), 2013 Proceedings of the 20th International Conference

Conference_Location

Gdynia

Print_ISBN

978-83-63578-00-8

Type

conf

Filename

6613342