Description
Date depot: 1 janvier 1900
Titre: high speed pipelined Analog-to-Digital Converter design in low voltage nanometer technolgies
Directeur de thèse:
Habib MEHREZ (LIP6)
Domaine scientifique: Sciences et technologies de l'information et de la communication
Thématique CNRS : Non defini
Resumé:
The need of high speed Analog-to-Digital Converters (ADC) in today's high data rates and multi-band wired and wireless applications is increasingly demanded. The design of such converters is challenging in two aspects: first is the analog impairments which started to appear significantly in new technologies, and the second is the ultra high speed required in some applications, at which the design of a single channel converter may be considered almost impractical. Nanometer technologies impose low supply voltages, and low intrinsic gain devices. To mitigate these issues, analog blocks should be designed for low distortion and high speed operation, while depending on digital calibration to recover the aroused low gain imperfections. Digital calibration not only can alleviate low gain problems, but also can push the speed of the converter beyond its analog capability. This boosted speed can be utilized to decrease the complexity of time interleaved converters, which pushes the speed of a single channel ADC to an ultra high speed required by some applications. The focus of the thesis will be the design of high speed, low distortion analog circuits, and the use of digital calibration to enhance the performance of the whole ADC.
Doctorant.e: Adel Hussein