High-Accuracy, High-Precision DEM-CCII Amplifiers

Author

Stornelli, V. ; Ferri, G. ; De Marcellis, A. ; Falconi, C. ; Mazzieri, D. ; D´Amico, A.

Author_Institution

Dept. of Electr. Eng., L´´Aquila Univ., Monteluco di Roio

fYear

2007

fDate

27-30 May 2007

Firstpage

2196

Lastpage

2199

Abstract

In this paper we describe an approach for the design of high-accuracy, high-precision, current mode amplifiers. These circuits take advantage of dynamic element matching (DEM) for compensating the input offset and 1/f noise voltages of the nominally identical (source-coupled) transistor pairs in a second generation current conveyor (CCII). In comparison with high-accuracy, high-precision op amp based amplifiers, the proposed approach is more convenient if the gain of the op amp may not be very high, e.g. due to short channel effects.

Keywords

1/f noise; current conveyors; current-mode circuits; operational amplifiers; 1/f noise; DEM-CCII amplifiers; current mode amplifiers; dynamic element matching; op amplifiers; second generation current conveyor; source-coupled transistor pairs; CMOS process; Circuit noise; Energy consumption; High power amplifiers; Low-frequency noise; Low-noise amplifiers; MOSFETs; Operational amplifiers; Sensor systems; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2007. ISCAS 2007. IEEE International Symposium on

Conference_Location

New Orleans, LA

Print_ISBN

1-4244-0920-9

Electronic_ISBN

1-4244-0921-7

Type

conf

DOI

10.1109/ISCAS.2007.378717

Filename

4253108