| Títol: | Continuous-time CMOS adaptive asynchronous sigma-delta modulator approximating low-fs low-inband-error on-chip wideband power amplifier |
| Autor: | Alarcón Cot, Eduardo José
Fernández, Diego
García Tormo, Albert
Madrenas Boadas, Jordi
Poveda López, Alberto |
| Altres autors/autores: | Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica |
| Editorial: | IEEE |
| Matèries: | Àrees temàtiques de la UPC::Enginyeria electrònica i telecomunicacions::Microelectrònica::Circuits integrats
Integrated circuits
Switching circuits
Amplifiers (Electronics)
Circuits integrats
Circuits de commutació
Amplificadors (Electrònica) |
| Tipus de document: | Conference report |
| Descripció: | A mixed-signal continuous-time-processing standard CMOS implementation of an asynchronous sigma-delta modulator aimed to drive a switching amplifier operating as an on-chip wideband adaptive power supply is presented in this work. The paper first briefly discusses the fundamental limit tracking capabilities of a two-level switching signal to inband-error-free track a bandlimited signal with minimum average switching frequency. It is argued the adequacy of an adaptive asynchronous sigma-delta modulator (AAΣΔ) to approximate such fundamental characteristics. The second part of the paper presents mixed-signal design details of the various subcircuits implementing a CMOS low-power digitally-programmable AAΣΔ modulator, with 7 MHz average switching frequency operation and 1000 µm × 640 µm area occupancy. |
| Altres identificadors i accés: | Alarcón, E. [et al.]. Continuous-time CMOS adaptive asynchronous sigma-delta modulator approximating low-fs low-inband-error on-chip wideband power amplifier. A: IEEE International Symposium on Circuits and Systems. "ISCAS 2011 the IEEE International Symposium on Circuits and Systems: proceedings". Rio de Janeiro: IEEE, 2011, p. 301-304.
978-1-4244-9472-9
http://hdl.handle.net/2117/14496
10.1109/ISCAS.2011.5937561 |
| Disponible al dipòsit: | E-prints UPC
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