Title :
A fully differential and tunable CMOS current mode opamp based on transimpedance-transconductance technique
Author :
Assi, Ali ; Sawan, Mohamad ; Raut, Rabin
Author_Institution :
Ecole Polytech. de Montreal, Que., Canada
Abstract :
A fully differential and tunable CMOS current opamp is described in this paper. This opamp is based on a transimpedance-transconductance circuit technique. The use of a tunable transconductance block results in a voltage-tunable current op amp. Simulation results demonstrate a high-gain which can be tuned between 70 dB and 96 dB. A high gain-bandwidth product of 145 MHz has been achieved at power consumption of less than 0.5 mW and power supply voltage of ±1.5 V
Keywords :
CMOS analogue integrated circuits; circuit analysis computing; circuit tuning; differential amplifiers; digital simulation; operational amplifiers; -1.5 to 1.5 V; 70 to 96 dB; fully differential amplifier; gain-bandwidth product; power consumption; power supply voltage; simulation results; transimpedance-transconductance technique; tunable CMOS current mode opamp; voltage-tunable circuit; CMOS technology; Circuit simulation; Energy consumption; Frequency; Impedance; Low voltage; Power supplies; Tellurium; Transconductance; Tunable circuits and devices;
Conference_Titel :
Circuits and Systems, 1997. Proceedings of the 40th Midwest Symposium on
Conference_Location :
Sacramento, CA
Print_ISBN :
0-7803-3694-1
DOI :
10.1109/MWSCAS.1997.666060
