Title :
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
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;
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
DOI :
10.1109/ISCAS.2007.378717
