Liang, Jifu Wang, Yingying Mandal, Soumyajit
Published in
Analog Integrated Circuits and Signal Processing
This paper presents an integrated switched-capacitor-based low-power fully-differential analog front-end (AFE) for simultaneously detecting electrocardiogram (ECG) and respiration rate (RR). A current-driven passive mixer is used to up-convert the RR signal, and a preamplifier including a driven-ground common-mode feedback (CMFB) loop amplifies bot...
Amini, Abdollah Baradaranrezaeii, Ali Hassanzadazar, Mina
Published in
Analog Integrated Circuits and Signal Processing
This paper presents an online offset-cancellation method which is embedding in a low-power 6-bit flash analog to digital converter. A set of low-offset comparators are employed as the first step and then utilizing a novel online method leads to eliminate the effect of the relative offset between all comparators that is the origin of the bubble erro...
Shih, Horng-Yuan Chang, Yu-Chuan Yang, Cheng-Wei
Published in
Analog Integrated Circuits and Signal Processing
A wideband current amplifier with DC-offset cancellation utilizing chopper modulation is proposed. Combining series–series feedback with backgate driven choppers, a wideband current amplifier with DC-offset cancellation is realized. As consumed a power of 1.495 mW under a supply voltage of 1.8 V, measured bandwidth of the current amplifier is 120 M...
Gaugaz, François Krummenacher, François Kayal, Maher
Published in
Analog Integrated Circuits and Signal Processing
This research presents a discrete-time transmission line model based on the propagation of travelling waves. In this approach, the transmission line is emulated by means of many interconnected unit delay cells implemented with switched-capacitor (SC) circuits. The accuracy and limitations of this method is compared to existing transconductance–capa...
Kim, Jong Gu So, Jin-Woo Yoon, Kwang Sub
Published in
Analog Integrated Circuits and Signal Processing
This paper describes a CMOS pulse frequency modulation (PFM) buck converter employing a digitally programmable voltage level-shifting technique capable of adjusting peak inductor current and output ripple voltage for different load currents. The conventional PFM buck converters employ either an adaptive delay time control circuit or a fixed delay t...
Lv, Fangxu Zheng, Xuqiang Wang, Jianye Zhang, Guoli Wang, Ziqiang Yuan, Shuai He, Yajun Zhang, Chun Wang, Zhihua
Published in
Analog Integrated Circuits and Signal Processing
This paper presents a 20 GHz subharmonic injection-locked clock multiplier (SILCM), which adopts a mixer based self-align injection timing control loop to guarantee the optimal injection point. In addition, to further improve the injection time accuracy and reduce the super, a V/I mismatch cancellation are utilized. Furthermore, a frequency-locked ...
Le Hir, Juliette Kolar, Anthony Vinci Dos Santos, Filipe
Published in
Analog Integrated Circuits and Signal Processing
Smart vision systems on a chip are promising for embedded applications. Currently, flexibility in the choice of integrated pre-processing tools is obtained at the expense of total silicon area and fill factor, which are otherwise optimized provided that the sensor performs a specific task. We propose a new architecture based on macropixel-level pro...
El-Hadbi, Assia Cherkaoui, Abdelkarim Elissati, Oussama Simatic, Jean Fesquet, Laurent
Published in
Analog Integrated Circuits and Signal Processing
This paper proposes a new architecture of a time-to-digital converter (TDC) based on a self-timed ring (STR) oscillator with sub-gate delay resolution. The proposed TDC can virtually achieve as fine as desired time resolution by simply increasing its number of stages thanks to the STR unique features. Exploiting the phase difference between events ...
Abro, Kashif Ali Memon, Ali Asghar Memon, Anwar Ahmed
Published in
Analog Integrated Circuits and Signal Processing
The significance of the modern fractional derivatives containing the singular kernel with locality and the non-singular kernel with non-locality have recently diverted the researchers because of the numerical or experimental analyses on the behavior between a system conservative and dissipative and the lack of fractionalized analytic methods. This ...
Varun, D. Mazumdar, Dipayan Kadambi, Govind R.
Published in
Analog Integrated Circuits and Signal Processing
This paper, elucidates a second order Haven’s technique for generation of a pair of sinusoids in perfect quadrature phase. The effects of input amplitude mismatch on output phase mismatch and vice versa have been expounded. The proposed second order Haven’s Technique essentially estimates and corrects the amplitude and phase mismatches. This method...
