Title :
Simple CMOS 1/jLω to inductive transconductance amplifier
Author :
Barthélemy, Hervé ; Fillaud, Matthieu
Author_Institution :
Lab. L2MP, Provence Univ., Marseille, France
fDate :
28 Aug.-2 Sept. 2005
Abstract :
A continuous-time inductive (1/jLω) CMOS transconductance analog amplifier is presented. The proposed CMOS amplifier contains one capacitor and eleven transistors only. The circuit based on a modified traditional gyrator simulates an inductive transconductance. Simulation results under 2.5V supply voltage and using the 0.8μm CMOS process parameters from AMS have shown good performances. For example, from a DC bias current of 10 μA to 50 μA, the controlled inductance (Lx) that defines the amplifier transconductance varies from Lx=406 μH to Lx=47 μH. At 50 μA the total power consumption is 634 μW only. Based on this new topology, additional simulation results of a simple current-controlled band-pass filter have been added in this paper.
Keywords :
CMOS analogue integrated circuits; band-pass filters; continuous time filters; gyrators; network topology; operational amplifiers; 0.8 micron; 2.5 V; 50 mA; 634 mW; CMOS transconductance analog amplifier; amplifier topology; continuous-time inductive transconductance amplifier; current-controlled band-pass filter; gyrator device; Band pass filters; CMOS process; Capacitors; Circuit simulation; Energy consumption; Gyrators; Inductance; Topology; Transconductance; Voltage;
Conference_Titel :
Circuit Theory and Design, 2005. Proceedings of the 2005 European Conference on
Print_ISBN :
0-7803-9066-0
DOI :
10.1109/ECCTD.2005.1523127
