|
Title:
|
Continuous-time CMOS adaptive asynchronous sigma-delta modulator approximating low-fs low-inband-error on-chip wideband power amplifier
|
|
Author:
|
Alarcón Cot, Eduardo José; Fernández, Diego; García Tormo, Albert; Madrenas Boadas, Jordi; Poveda López, Alberto
|
|
Other authors:
|
Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica; Universitat Politècnica de Catalunya. AHA - Arquitectures Hardware Avançades; Universitat Politècnica de Catalunya. EPIC - Energy Processing and Integrated Circuits |
|
Abstract:
|
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. |
|
Abstract:
|
Peer Reviewed |
|
Subject(s):
|
-Àrees temàtiques de la UPC::Enginyeria electrònica::Microelectrònica::Circuits integrats
-Integrated circuits
-Switching circuits
-Amplifiers (Electronics)
-Circuits integrats
-Circuits de commutació
-Amplificadors (Electrònica) |
|
Rights:
|
|
|
Document type:
|
Article - Published version
Conference Object |
|
Published by:
|
IEEE
|
|
Share:
|
|
