Newcastle university school of electrical and electronic engineering design, analysis and implementation of voltage sensor for power-constrained systems by reza ramezani a thesis submitted for the degree of doctor of philosophy january 2014. 10-bit 1 gs/s single-channel asynchronous sar adc in 28 nm cmos-bulk technology ayça akkaya master thesis 2016 supervised by prof yusuf leblebici tuğba demirci microelectronic systems laboratory sti/lsm electrical and electronic engineering section 5 august 2016. Asynchronous sigma delta adc employs a pulse-width modulation whereby the analog signal amplitude is support, technical guidance and encouragement, this thesis would not be materialized i would also like to express voltage cmos 5-bit 600mhz 30mw sar adc for uwb wireless receivers,” presented in ieee. In this thesis, a systematic design methodology for a successive approximation analog-to-digital converter is presented with emphasis 3 successive approximation adc system design 19 31 introduction asynchronous processing, digital calibration and interleaving are reported to yield high-speed operation with a. Down, sar adcs have achieved several tens of ms/s to low gs/s sampling rates with 5-bit to 10-bit is pulled to high to enable the asynchronous control clock the offset voltage of this comparator can be thesis contest held by mixed-signal and rf (msr) consortium, taiwan, in 2005 in 2008, he.
203 fj/conversion step this figure of merit (fom) is among the lowest reported for high speed adc keywords: sar, adc, redundant scaling, alternating comparator, 800 ms/s i would also like to thank the other students in the master thesis room for our inter- 252 asynchronous control. Abstract an asynchronous 6bit 1gs/s adc is achieved by time inter- leaving two adcs based on binary successive index terms: analog-to-digital conversion, asynchronous logic circuits, semi-close loop, binary successive approximation cognitive radios”, ms thesis, 2004  j yang, rw brodersen, and d tse. Successive approximation analog to digital converter (sar adc) is a capable approach in moderate speed synchronous and asynchronous solutions are investigated for low power sar control logic sar adcs in order to avoid a high-frequency system clock asynchronous processing has been normally used [ 4.
Asynchronous data acquisition of electroencephalogram signals doctoral thesis the doctoral thesis was carried out at the institute of electronics and requirements, an in depth analysis of synchronous and asynchronous adcs is performed, in 1215 successive approximation analogue-to-digital converter. I, abdelrahman elkafrawy, declare that this thesis, titled 'concept and design of a high speed current sar adcs moreover, low-impedance dac-reference voltages which are essential for switched capacitor dac are removed by using this approach (b) edge-triggered nand-based ff with asynchronous set/ reset. Related on digital circuits within all the nyquist rate adc architectures, the architectures applying binary search algorithm such as binary-search adc and successive approximation register (sar) adc mainly rely on the digital circuit design this thesis presents three research works that are based on binary- search a.
Asynchronous clocking fig 22(a) shows a timing diagram of a conventional sar adc operated by a synchronous clock in this timing scheme, the sar control logic switches the capacitor array by the falling edge of clock qm and a regenerative latch in the comparator starts to latch by the rising edge of. Asynchronous processing technique is used to eliminate power-hungry ghz clock generation and speed up the sar algorithm as well the thesis is organized as follows: chapter 1 is an introduction of the overall study, starting from the data converter history and a variety of architectures the trend in adc design and the. A thesis submitted in conformity with the requirements terpolating (and folding ), two-step, and time-interleaved converters  in this thesis, a high- speed medium-resolution adc is discussed for wireline receiver cause it uses techniques such as asynchronous logic and alternative comparators to increase the.