Dariusz Kościelnik, Marek Miśkowicz



A challenging problem of today’s ADC design is a development of low voltage, low power and possibly high performance converters. The ever growing demand for decreasing the supply voltage of semiconductor devices due to scaling the feature size of VLSI technology has pushed the design of analog integrated circuit to its limits. The same problem concerns the analog-to-digital converters since lowering supply voltage results in a reduction of a voltage increment corresponding to the least significant bit (LSB) in signal amplitude quantization. In the paper, an important alternative to conventional ADCs is presented. To overcome problems with decreasing accuracy of amplitude quantization, a new class of asynchronous ADCs is discussed where the mapping of an analog signal into time domain rather than into amplitude domain is used. The asynchronous ADCs are not controlled by any global clock but self-timed. The local reference clock is used only to quantize time intervals that represent the converted signal amplitude. The design of asynchronous Sigma-Delta analog-to-digital converter (ASD-ADC) with serial output interface is discussed in details. The ASD-ADC together with the loss-free asynchronous analog signal recovery method developed recently provides possibility to establish the asynchronous digital signal processing chain.


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Paper Citation

in Harvard Style

Kościelnik D. and Miśkowicz M. (2009). TOWARDS ASYNCHRONOUS SIGNAL PROCESSING . In Proceedings of the 6th International Conference on Informatics in Control, Automation and Robotics - Volume 2: ICINCO, ISBN 978-989-674-001-6, pages 178-183. DOI: 10.5220/0002251101780183

in Bibtex Style

author={Dariusz Kościelnik and Marek Miśkowicz},
booktitle={Proceedings of the 6th International Conference on Informatics in Control, Automation and Robotics - Volume 2: ICINCO,},

in EndNote Style

JO - Proceedings of the 6th International Conference on Informatics in Control, Automation and Robotics - Volume 2: ICINCO,
SN - 978-989-674-001-6
AU - Kościelnik D.
AU - Miśkowicz M.
PY - 2009
SP - 178
EP - 183
DO - 10.5220/0002251101780183