Title :
Fully tunable GaAs MESFET OTA-C integrator suitable for high-precision continuous-time filtering
Author :
Visocchi, Pask ; Taylor, John ; Betts, Andrew ; Haigh, David
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. Coll. London, UK
Abstract :
Measured results for a novel operational transconductance amplifier (OTA)-C integrator realized in 0.5-μm, -1-V threshold GaAs MESFET technology are presented. A wide tuning range and high levels of DC gain are achieved using a single geometry device (20 μm), and without reliance on early saturation. Total harmonic distortion (THD) level are quite modest and show good agreement with SPICE simulations
Keywords :
III-V semiconductors; MESFET integrated circuits; analogue processing circuits; circuit tuning; continuous time filters; field effect analogue integrated circuits; frequency response; gallium arsenide; harmonic distortion; integrating circuits; operational amplifiers; -1 V; 0.5 micron; DC gain; GaAs; MESFET technology; OTA-C integrator; SPICE simulations; THD level; active filters; active networks; continuous-time filtering; high-precision; operational transconductance amplifier; total harmonic distortion; wide tuning range; Band pass filters; Bandwidth; Delay; Filtering; Frequency; Gallium arsenide; Geometry; MESFETs; Transconductance; Tunable circuits and devices;
Conference_Titel :
Circuits and Systems, 1993., ISCAS '93, 1993 IEEE International Symposium on
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-1281-3
DOI :
10.1109/ISCAS.1993.393962
