Title :
The exponential CCII-, a building block for log-domain circuits
Author :
López, Antonio ; Carlosena, Alfonso
Author_Institution :
Dept. of Ingenieria Electrica y Electronica, Univ. Publica de Navarra, Pamplona, Spain
Abstract :
In this paper an implementation which features a very precise exponential voltage-current relationship is presented, based on introducing BJT base current compensation as well as collector and emitter currents equalization methods. Such a circuit can be used as a basic building block for the design of log-domain circuits and other nonlinear techniques demanding an accurate exponential behavior. Both simulations and experimental results are provided in order to confirm its practical value
Keywords :
BiCMOS analogue integrated circuits; compensation; current conveyors; multiterminal networks; BJT base current compensation; collector currents equalization; emitter currents equalization; exponential CCII; exponential behavior; log-domain circuits; nonlinear techniques; voltage-current relationship; Bipolar transistors; Circuit simulation; Circuit synthesis; Equations; Impedance; Linear circuits; MOSFETs; Mirrors; Nonlinear distortion; Voltage;
Conference_Titel :
Electronics, Circuits and Systems, 1998 IEEE International Conference on
Conference_Location :
Lisboa
Print_ISBN :
0-7803-5008-1
DOI :
10.1109/ICECS.1998.814906
