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Design of a 0.18μm Low-Voltage Switched-Current ΣΔ Modulator for Multistandard Communication Systems

AutorRodríguez Calderón, Rosalino; Becerra-Alvarez, Edwin C.; Sandoval-Ibarra, F.; Rosa, José M. de la
Palabras claveSwitched-Current Circuits
Low-voltage
Sigma-Delta Modulators
Multi-Standard Communication Systems
Fecha de publicaciónago-2006
EditorInstitute of Electrical and Electronics Engineers
CitaciónR. Rodríguez-Calderón, E. Becerra-Álvarez, F. Sandoval-Ibarra and J. M. de la Rosa: "Design of a 0.18μm Low-Voltage Switched-Current ΣΔ Modulator for Multi-Standard Communication Systems". Proceeding of the 2006 IEEE MIDWEST, San Juan de Puerto Rico, August 2006.
ResumenThis paper presents a 1.8-V, 0.18um CMOS reconfigurable switched-current ΣΔ modulator for multistandard (GSM, Bluetooth, WCDMA) telecom systems. The modulator topology is an expandable 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. Transistor level simulations are shown that demonstrate correct operation for all standards, featuring 12-bit, 11-bit and 7.8-bit dynamic range within 200-kHz, 1-MHz and 3.8-MHz bandwidth, respectively.
URIhttp://hdl.handle.net/10261/3772
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