Title :
Noise performance of SC-integrators assuming different operational transconductance amplifier (OTA) models
Author :
Goette, Josef ; Guggenbühl, Walter
Author_Institution :
Electron. Sci. Lab., Swiss Fed. Inst. of Technol., Zurich, Switzerland
fDate :
8/1/1988 12:00:00 AM
Abstract :
Analytic formulas describing the noise performance due to white noise of two SC-integrator structures using simple and more sophisticated OTA models are presented. It is shown that an oversimplified modeling can lead to underestimating as well as to overestimating the noise effects. The formulas suggest design rules for reducing the noise in the integrator structures. The numerical analysis of a second-order filter indicates that these design rules also hold for more complex structures using the mentioned integrators
Keywords :
active networks; integrating circuits; operational amplifiers; switched capacitor networks; white noise; OTA models; SC-integrators; active circuits; design rules; noise performance; operational transconductance amplifier; random noise; white noise; Circuit noise; Digital filters; Operational amplifiers; Quantization; Signal processing; Signal synthesis; Speech processing; Speech synthesis; Transconductance; White noise;
Journal_Title :
Circuits and Systems, IEEE Transactions on
