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Título : Design and Electrical Implementation of a 1.8-V Multistandard Switched-Current ΣΔ Modulator
Autor : Rodríguez Calderón, Rosalino; Rosa, José M. de la ; Sandoval-Ibarra, F.
Palabras clave : Switched-Current Circuits
Multi-Standard Applications
Fecha de publicación : nov-2005
Citación : R. Rodríguez-Calderón, J.M. de la Rosa and F. Sandoval-Ibarra: "Design and Electrical Implementation of a 1.8-V Multistandard Switched-Current ΣΔ Modulator", Proceeding of the 2005 Conference on Design of Circuits and Integrated Systems, Lisbon, November 2005.
Resumen: This paper describes the design and electrical implementation of a 1.8-V, 0.18μm CMOS reconfigurable switched-current ΣΔ modulator for multistandard (Bluetooth, WCDMA) communication systems. The modulator topology is an expandible cascade architecture which can be reconfigured both at the architecture level and at the circuit level in order to adapt the modulator performance to the different standards with adjustable power consumption. For this purpose, programmable Class AB memory-cell arrays are used to implement the modulator loop filter. Simulation results are shown that demonstrate correct operation for all standards, featuring 11bits dynamic range within 1MHz and 7.8bits within 3.8MHz bandwidth.
URI : http://hdl.handle.net/10261/3848
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