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 General model for delayed feedback and its application to transimpedance amplifier's bandwidth optimization
Please use this identifier to cite or link to this item http://hdl.handle.net/10773/5207

title: General model for delayed feedback and its application to transimpedance amplifier's bandwidth optimization
authors: Alves, L. N.
Barbosa, L.
Macedo, E.A.L.
Aguiar, R.L.
keywords: Bandwidth
BiCMOS technology
Electric impedance
Bandwidth improvements
Bandwidth reduction
Delay elements
Feedback loop
Feedback amplifiers
issue date: 2006
publisher: Institute of Electrical and Electronics Engineers (IEEE)
abstract: Delays in real systems can be of two types: i) intrinsic delays - due to the physical principles of operation of each electronic device; ii) designed delays - due to extra circuits used to add the desired delay. Previous work established the possibility of achieving bandwidth improvements using small delays inside the feedback loop of feedback amplifiers. The modeling approach followed on these contributions used only one designed delay element. The bandwidth reduction effect due to intrinsic delays was not considered on these contributions. This paper extends the concept to the general case of feedback amplifiers that incorporates delays of both types. An experimental demonstration using a simple 0.35μm BiCMOS transimpedance amplifier further confirms the proposed model. © 2006 IEEE.
URI: http://hdl.handle.net/10773/5207
ISBN: 0-7803-9390-2
ISSN: 0271-4310
publisher version/DOI: http://dx.doi.org/10.1109/ISCAS.2006.1692735
source: Proceedings - IEEE International Symposium on Circuits and Systems
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