# prof.dr. R. Lotfi

*Guest*

Bioelectronics (BE), Department of Microelectronics

**Expertise:** Low-Power Integrated Circuit Design for Biomedical Applications, Analog and Mixed-Signal Integrated Circuit Design, Design of Nyquist-Rate Data Converters

**Themes:**Analog and Mixed-Mode Integrated Circuits and Systems, Biosignal acquisition, conditioning and processing

### Biography

Reza Lotfi received the B.Sc. degree from Ferdowsi University of Mashhad, Mashhad, Iran, the M.Sc. degree from Sharif University of Technology, Tehran, Iran, and the Ph.D. degree from the University of Tehran, Tehran, in 1997, 1999, and 2004, respectively, all in electrical engineering.

Since 2004, he has been with Ferdowsi University of Mashhad, where he is currently an Associate Professor. From 2008 to 2009, he was with the Electronics Research Laboratory, Delft University of Technology, Delft, the Netherlands, as a Post-Doctoral Scientific Researcher involved in research on ultra low-power analog and mixed-signal integrated circuits for biomedical applications. Since February 2014, he has been with Delft University of Technology as a visiting professor.

From 2010 to 2012, Dr. Lotfi has been an Associate Editor of the IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMSâ€”PART I: REGULAR PAPERS. He has also been the general chair of 21st Iranian Conference on Electrical Engineering, ICEE 2013. He is a senior member of the IEEE. His research interests include low-power analog and mixed-signal integrated circuit design for biomedical applications as well as high-performance data converter design.

### InForMed

An Integrated Pilot Line for Micro-Fabricated Medical Devices

**Speed-Power Improvement in High-Voltage Switches Employed in Multi-Electrode Arrays**

A. Safarpour; F. Dehnavi; M. Saberi; R. Lotfi; W.A. Serdijn;*IEEE Transactions on Circuits and Systems II: Express Briefs*,

Volume 69, Issue 7, pp. 3139-3143, July 2022. DOI: 10.1109/TCSII.2022.3161202

document**A Charge-Redistribution Phase-Domain ADC Using an IQ-Assisted Binary-Search Algorithm**

Leila Rajabi; Mehdi Saberi; Yao Liu; Reza Lotfi; Wouter A. Serdijn;*IEEE Transactions on Circuits and Systems I: Regular Papers*,

28 March 2017. DOI: 10.1109/TCSI.2017.2681461.

document**A Power-Efficient Signal-Specific ADC for Sensor-Interface Applications**

Rahiminejad, E.; Saberi, M.; Lotfi, R.;*IEEE Transactions on Circuits and Systems II: Express Briefs*,

Volume 64, Issue 9, pp. 1032-1036, 2017. DOI: 10.1109/TCSII.2016.2622161**A low-power capacitor switching scheme with low common-mode voltage variation for successive approximation ADC**

Rasool Ghasemi, A.; Saberi, M.; Lotfi, R.;*Microelectronics Journal*,

Volume 61, pp. 15-20, 2017. DOI: 10.1016/j.mejo.2016.12.009**Structured Electronic Design of High-Pass Sigma-Delta Converters and their Application to Cardiac Signal Acquisition**

Samprajani Rout; Wouter Serdijn; Reza Lotfi;

In*Book of Abstracts, 6th Dutch Bio-Medical Engineering Conference, 26 and 27 January 2017, Egmond aan Zee, The Netherlands*,

2017.

document**A highly-linear transconductor for G<inf>m</inf>-C tracking filters employed in digital TV tuners**

Hosnan, M.; Sobhanifar, H.; Lotfi, R.; Saberi, M.;

In*2017 25th Iranian Conference on Electrical Engineering, ICEE 2017*,

pp. 502-505, 2017. DOI: 10.1109/IranianCEE.2017.7985089**A fully-synchronous offset-insensitive level-crossing analog-To-digital converter**

Ravanshad, N.; Rezaee-Dehsorkh, H.; Lotfi, R.;

In*Midwest Symposium on Circuits and Systems*,

2017. DOI: 10.1109/MWSCAS.2016.7870108**Ultra-Low-Noise Signal-Recording Amplifier/MUX ASIC**

A. Safarpour; R. Lotfi; W. A. Serdijn;

In*Proc. Design of Medical Devices Conf. (DMD) 2017 Microfabrication for Medical Devices*,

Eindhoven, the Netherlands, 14 â€“ 15 Nov. 2017.

document**A High-Speed and Power-Efficient Voltage Level Shifter for Dual-Supply Applications**

Hosseini, S.R.; Saberi, M.; Lotfi, R.;*IEEE Transactions on Very Large Scale Integration (VLSI) Systems*,

2016.

document**An Improved-Accuracy Approach for Readout of Large-Array Resistive Sensors**

Yarahmadi, R.; Safarpour, A.; Lotfi, R.;*IEEE Sensors Journal*,

Volume 16, Issue 1, pp. 210-215, 2016.

document**A 0.7-V 400-uW 16-bit audio sigma-delta modulator with a modified tracking quantizer**

Yaghoubi, M.; Saberi, M.; Lotfi, R.;

In*proc. 2016 24th Iranian Conference on Electrical Engineering, ICEE 2016*,

pp. 1336-1341, 2016.

document**A 21-bit Companding Two-Step Analog-to-Digital Converter using a Minimum Amount of High Voltage Devices for Recording Neural Responses in Cochlear Implants**

Cees-Jeroen Bes; Reza Lotfi; Wouter Serdijn; Jeroen Briaire; Johan Frijns;

In*Book of Abstracts, 5th Dutch Bio-Medical Engineering Conference*,

Egmond aan Zee, the Netherlands, January 22-23 2015.

document**A level-crossing based QRS-detection algorithm for wearable ECG sensors**

Ravanshad, N., Rezaee-Dehsorkh, H.; R. Lotfi; Lian, Y.;*IEEE Journal of Biomedical and Health Informatics*,

Volume 18, Issue 1, pp. 183-192, 2014.**Nonlinear signal-specific ADC for efficient neural recording in brain-machine interfaces**

Judy, M., Sodagar, A.M.; R. Lotfi; Sawan, M.;*IEEE Transactions on Biomedical Circuits and Systems*,

Volume 8, Issue 3, pp. 371-381, 2014.**A low-power subthreshold to above-threshold voltage level shifter**

Hosseini, S.R., Saberi, M.; R. Lotfi;*IEEE Transactions on Circuits and Systems II: Express Briefs*,

Volume 61, Issue 10, pp. 753-757, 2014.**Analysis and design of a low-voltage low-power double-tail comparator**

Babayan-Mashhadi, S.; R. Lotfi;*IEEE Transactions on Very Large Scale Integration (VLSI) Systems*,

Volume 22, Issue 2, pp. 343-352, 2014.**A new approach to design safe and reliable electrical stimulator**

Moradi, S., Maghsoudloo, E.; R. Lotfi;*International Journal of Biomedical Engineering and Technology*,

Volume 15, Issue 4, pp. 305-316, 2014.**Segmented architecture for successive approximation analog-to-digital converters**

Saberi, M.; R. Lotfi;*IEEE Transactions on Very Large Scale Integration (VLSI) Systems*,

Volume 22, Issue 3, pp. 593-606, 2014.**A Comparative Analysis of Phase-Domain ADC and Amplitude-Domain IQ ADC**

Yao Liu; Reza Lotfi; Yongchang Hu; Wouter A. Serdijn;*IEEE Transactions on Circuits and Systems-I: Regular Papers*,

2014. Digital Object Identifier: 10.1109/TCSI.2014.2374852.

document**Low-voltage low-power Gm-C filters: A modified configuration for improving performance**

Fahmideh Akbarian, S.M.; R. Lotfi; Maymandi-Nejad, M.;*Analog Integrated Circuits and Signal Processing*,

Volume 74, Issue 1, pp. 297-302, 2013.**Pressure ulcer risk assessment by monitoring interface pressure and temperature**

Fard, F.D., Moghimi, S.; R. Lotfi;

In*2013 21st Iranian Conference on Electrical Engineering, ICEE 2013*,

2013.**Analysis of power in dynamic comparators**

Babayan-Mashhadi, S., Daliri, M.; R. Lotfi;

In*2013 21st Iranian Conference on Electrical Engineering, ICEE 2013*,

2013.**Detailed study of the time estimation in level-crossing analog-to-digital converters**

Ravanshad, N., Rezaee-Dehsorkh, H.; R. Lotfi;

In*2013 21st Iranian Conference on Electrical Engineering, ICEE 2013*,

2013.**Modified structures for power-efficient level translators**

Hosseini, S.R., Rahiminejad, E.; R. Lotfi;

In*2013 21st Iranian Conference on Electrical Engineering, ICEE 2013*,

2013.**A 10-bit 50-MS/s redundant SAR ADC with split capacitive-array DAC**

Arian, A., Saberi, M., Hosseini-Khayat, S.; R. Lotfi; Leblebici, Y.;*Analog Integrated Circuits and Signal Processing*,

Volume 71, Issue 3, pp. 583-589, 2012.**Impacts of NBTI/PBTI on performance of domino logic circuits with high-k metal-gate devices in nanoscale CMOS**

Houshmand Kaffashian, M.; R. Lotfi; Mafinezhad, K., Mahmoodi, H.;*Microelectronics Reliability*,

Volume 52, Issue 8, pp. 1655-1659, 2012.**An offset cancellation technique for comparators using body-voltage trimming**

Babayan-Mashhadi, S.; R. Lotfi;*Analog Integrated Circuits and Signal Processing*,

pp. 1-10, 2012.**Power reduction techniques in a 6 bit 1 GSPS flash ADC**

Nasrollaholhosseini, S.H., Babayan Mashhadi, S.; R. Lotfi;

In*ICEE 2012 - 20th Iranian Conference on Electrical Engineering*,

pp. 228-231, 2012.**New charge balancing method based on imbalanced biphasic current pulses for functional electrical stimulation**

Moradi, S., Maghsoudloo, E.; R. Lotfi;

In*ICEE 2012 - 20th Iranian Conference on Electrical Engineering*,

pp. 270-274, 2012.**A power-efficient CMOS active pixel sensor imager with column-level difference ADC in 0.18-Î¼m**

Masoodian, S.; R. Lotfi;

In*ICEE 2012 - 20th Iranian Conference on Electrical Engineering*,

pp. 97-100, 2012.**A low-power Successive Approximation ADC for biomedical applications**

Saberi, M., Sepehrian, H.; R. Lotfi; Mafinezhad, K.;*IEICE Electronics Express*,

Volume 8, Issue 4, pp. 195-201, 2011.**An optimization method for NBTI-aware design of domino logic circuits in nano-scale CMOS**

Kaffashian, M.H.; R. Lotfi; Mafinezhadand, K., Mahmoodi, H.;*IEICE Electronics Express*,

Volume 8, Issue 17, pp. 1406-1411, 2011.**Analysis and design of tunable amplifiers for implantable neural recording applications**

Rezaee-Dehsorkh, H., Ravanshad, N.; R. Lotfi; Mafinezhad, K., Sodagar, A.M.;*IEEE Journal on Emerging and Selected Topics in Circuits and Systems*,

Volume 1, Issue 4, pp. 546-556, 2011.**Impact of NBTI on performance of domino logic circuits in nano-scale CMOS**

Houshmand Kaffashian, M.; R. Lotfi; Mafinezhad, K., Mahmoodi, H.;*Microelectronics Journal*,

Volume 42, Issue 12, pp. 1327-1334, 2011.**Analysis of Power Consumption and Linearity in Capacitive Digital-to-Analog Converters Used in Successive Approximation ADCs**

Mehdi Saberi; Reza Lotfi; Khalil Mafinezhad; Wouter A. Serdijn;*IEEE Transactions on Circuits and Systems-I: Regular Papers*,

Volume 58, Issue 8, pp. 1736-1748, Aug. 2011. Digital Object Identifier: 10.1109/TCSI.2011.2107214.

document**A signal-specific successive-approximation analog-to-digital converter**

Sepehrian, H., Saberi, M.; R. Lotfi;

In*Proceedings - IEEE International Symposium on Circuits and Systems*,

pp. 1624-1627, 2011.**An offset cancellation technique for comparators using body-voltage trimming**

Mashhadi, S.B., Nasrollaholosseini, S.H., Sepehrian, H.; R. Lotfi;

In*2011 IEEE 9th International New Circuits and Systems Conference, NEWCAS 2011*,

pp. 273-276, 2011.**A linear tunable amplifier for implantable neural recording applications**

Rezaee-Dehsorkh, H., Ravanshad, N.; R. Lotfi; Mafinezhad, K.;

In*Midwest Symposium on Circuits and Systems*,

2011.**A 1-V 416-nW fully integrated sensor interface IC for pacemakers**

Alahdab, S.; R. Lotfi; W.A. Serdijn;

In*IMEKO TC4 International Workshop on ADC Modelling, Testing and Data Converter Analysis and Design 2011, IWADC 2011 and IEEE 2011 ADC Forum*,

pp. 161-166, 2011.**Linearity enhancement in digital-to-analog converters using a modified decoding architecture**

Hokmabadi, S.M.; R. Lotfi;

In*ISCAS 2010 - 2010 IEEE International Symposium on Circuits and Systems: Nano-Bio Circuit Fabrics and Systems*,

pp. 3361-3364, 2010.**Capacitor scaling for low-power design of cyclic analog-to-digital converters**

Zaare', M.; R. Lotfi; Maymandi-nejad, M.;

In*ISCAS 2010 - 2010 IEEE International Symposium on Circuits and Systems: Nano-Bio Circuit Fabrics and Systems*,

pp. 1456-1459, 2010.**Low-dropout voltage reference: An approach to buffered architectures with low sensitivity**

Aminzadeh, H.; R. Lotfi; Mafinezhad, K.;

In*ISCAS 2010 - 2010 IEEE International Symposium on Circuits and Systems: Nano-Bio Circuit Fabrics and Systems*,

pp. 849-852, 2010.**Domino ADC: A novel analog-to-digital converter architecture**

Takhti, M., Sodagar, A.M.; R. Lotfi;

In

pp. 4057-4060, 2010.**A digital background correction technique combined with DWA for DAC mismatch errors in multibit Î£Î” ADCs**

Pakniat, H., Yavari, M.; R. Lotfi;

In

pp. 293-296, 2010.**A nonlinear signal-specific ADC for efficient neural recording**

Judy, M., Sodagar, A.M.; R. Lotfi;

In*2010 IEEE Biomedical Circuits and Systems Conference, BioCAS 2010*,

pp. 17-20, 2010.**Design of low-power single-stage operational amplifiers based on an optimized settling model**

Aminzadeh, H.; R. Lotfi; Mafinezhad, K.;*Analog Integrated Circuits and Signal Processing*,

Volume 58, Issue 2, pp. 153-160, 2009.**Modified model for settling behavior of operational amplifiers in nanoscale CMOS**

Rezaee-Dehsorkh, H., Ravanshad, N.; R. Lotfi; Mafinezhad, K.;*IEEE Transactions on Circuits and Systems II: Express Briefs*,

Volume 56, Issue 5, pp. 384-388, 2009.**Low-dropout voltage reference: An approach to low-temperature-sensitivity architectures with high drive capability**

Aminzadeh, H.; R. Lotfi; Mafinezhad, K.;*Electronics Letters*,

Volume 45, Issue 24, pp. 1200-1201, 2009.**A low-power architecture for integrating analog-to-digital converters**

Rahiminejad, E.; R. Lotfi;

In*2009 16th IEEE International Conference on Electronics, Circuits and Systems, ICECS 2009*,

pp. 411-414, 2009.**Analysis oy the linearity of pipelined ADC due to capacitor non-linearity**

Saberi, M.; R. Lotfi;

In*2009 16th IEEE International Conference on Electronics, Circuits and Systems, ICECS 2009*,

pp. 403-406, 2009.**Ultra-low-power design of analog-to-digital converters for wearable and implantable medical devices**

Reza Lotfi; Wouter A. Serdijn;

In*Book of Abstracts, Dutch Conference on Biomedical Engineering (BME)*,

Egmond aan Zee, the Netherlands, Jan. 22-23 2009.**An Ultra-Low-Power 10-Bit 100-kS/s Successive-Approximation Analog-to-Digital Converter**

Reza Lotfi; Rabe’eh Majidi; Mohammad Maymandi-Nejad; Wouter A. Serdijn;

In*Proc. International Symposium on Circuits and Systems (ISCAS)*,

Taipei, Taiwan, IEEE, May 24-27 2009.

document**Design of high-speed two-stage cascode-compensated operational amplifiers based on settling time and open-loop parameters**

Aminzadeh, H., Danaie, M.; R. Lotfi;*Integration, the VLSI Journal*,

Volume 41, Issue 2, pp. 183-192, 2008.**On the power efficiency of cascode compensation over miller compensation in two-stage operational amplifiers**

Aminzadeh, H.; R. Lotfi;*Journal of Circuits, Systems and Computers*,

Volume 17, Issue 1, pp. 1-13, 2008.**A sub-1-V high-gain single-stage operational amplifier**

Alireza Zabihian, S.; R. Lotfi;*IEICE Electronics Express*,

Volume 5, Issue 7, pp. 211-216, 2008.**Low-cost area-efficient low-dropout regulators using MOSFET capacitors**

Aminzadeh, H.; R. Lotfi; Mafinezhad, K.;*IEICE Electronics Express*,

Volume 5, Issue 16, pp. 610-616, 2008.**Area-efficient low-cost low-dropout regulators using MOS capacitors**

Aminzadeh, H.; R. Lotfi; Mafinezhad, K.;

In*2008 International Symposium on System-on-Chip Proceedings, SOC 2008*,

2008.**Simulation-equation-based methodology for design of CMOS amplifiers using geometric programming**

Maghami, M.H., Inanlou, F.; R. Lotfi;

In*Proceedings of the 15th IEEE International Conference on Electronics, Circuits and Systems, ICECS 2008*,

pp. 360-363, 2008.**Design guidelines for high-speed two-stage CMOS operational amplifiers**

Aminzadeh, H.; R. Lotfi;*Arabian Journal for Science and Engineering*,

Volume 32, Issue 2 C, pp. 75-87, 2007.**Design of cascode-compensated opamps based on settling time and open-loop parameters**

Aminzadeh, H., Danaie, M.; R. Lotfi;

In*24th Norchip Conference, 2006*,

pp. 111-116, 2007.**Design of high-resolution MOSFET-only pipelined ADCs with digital calibration**

Aminzadeh, H., Danaie, M.; R. Lotfi;

In*Proceedings -Design, Automation and Test in Europe, DATE*,

pp. 427-432, 2007.**Ultra-low-voltage, low-power, high-speed operational amplifiers using body-driven gain-boosting technique**

Zabihian, S.A.; R. Lotfi;

In*Proceedings - IEEE International Symposium on Circuits and Systems*,

pp. 705-708, 2007.**Body-driven enhanced-impedance current source: An approach to the implementation of low-voltage Current-Steering D/A Converters**

Hokmabadi, S.M., Zabihian, S.A.; R. Lotfi;

In*Proceedings of the IEEE International Conference on Electronics, Circuits, and Systems*,

pp. 1147-1150, 2007.**Minimizing power in very-low-voltage switched-opamp pipelined ADCs**

Nabavi, M.R.; R. Lotfi;

In*ICSPC 2007 Proceedings - 2007 IEEE International Conference on Signal Processing and Communications*,

pp. 289-292, 2007.**Design of two-stage miller-compensated amplifiers based on an optimized settling model**

Aminzadeh, H., Danaie, M.; R. Lotfi;

In*Proceedings of the IEEE International Conference on VLSI Design*,

pp. 171-176, 2007.**A capacitor mismatch- and nonlinearity-insensitive 1.5-bit residue stage for pipelined ADCs**

Saberi, M.; R. Lotfi;

In*Proceedings of the IEEE International Conference on Electronics, Circuits, and Systems*,

pp. 677-680, 2007.**A low-power CMOS Gm-C filter for wireless receiver applications with on-chip automatic tuning system**

Adrang, H.; R. Lotfi; Mafinejhad, K., Tajalli, A., Mehrmanesh, S.;

In*Proceedings - IEEE International Symposium on Circuits and Systems*,

pp. 3810-3813, 2006.**A 1-V 12-bit switched-opamp pipelined ADC with power optimization**

Nabavi, M.R.; R. Lotfi;

In*Proceedings - IEEE International Symposium on Circuits and Systems*,

pp. 5359-5362, 2006.**A 1.8V, 10-bit, 40MS/S MOSFET-only pipeline analog-to-digital converter**

Charkhkar, H., Asadi, A.; R. Lotfi;

In*Proceedings - IEEE International Symposium on Circuits and Systems*,

pp. 5363-5366, 2006.**ISECAD: An iterative simulation-equation-based opamp-design CAD tool**

Toosi, T.K., Tabasy, E.Z., Sarbishaei, H.; R. Lotfi;

In*Proceedings - IEEE International Symposium on Circuits and Systems*,

pp. 5243-5246, 2006.**Design guidelines for two-stage cascode-compensated operational amplifiers**

Aminzadeh, H.; R. Lotfi; Rahimian, S.;

In*Proceedings of the IEEE International Conference on Electronics, Circuits, and Systems*,

pp. 264-267, 2006.**A low-power design methodology for single-stage operational amplifiers**

Aminzadeh, H., Danaie, M.; R. Lotfi;

In*Proceedings - 2006 International Conference on Design and Test of Integrated Systems in Nanoscale Technology, IEEE DTIS 2006*,

pp. 62-67, 2006.**A straightforward design methodology for multi-bit continuous time delta sigma modulators**

Shamsi, H., Radiom, S., Shoaei, O.; R. Lotfi;

In*Midwest Symposium on Circuits and Systems*,

pp. 409-413, 2006.**Power optimization in low-voltage high-speed high-resolution pipelined ADCs**

Sarbishaei, H., Tabasy, E.Z., Toosi, T.K.; R. Lotfi;

In*Midwest Symposium on Circuits and Systems*,

pp. 153-157, 2006.**Folded-current-steering DAC: An approach to low-voltage high-speed high-resolution D/A converters**

Radiom, S., Sheikholeslami, B., Aminzadeh, H.; R. Lotfi;

In*Proceedings - IEEE International Symposium on Circuits and Systems*,

pp. 4783-4786, 2006.**Open-loop analysis of cascode compensation**

Aminzadeh, H.; R. Lotfi;

In*4th International IEEE North-East Workshop on Circuits and Systems, NEWCAS 2006 - Conference Proceedings*,

pp. 81-84, 2006.**Design of low-voltage MOSFET-only switched-capacitor filters**

Ghasemi, R., Charkhkar, H., As-Adi, A.; R. Lotfi; Mafinejad, K.;

In*Proceedings of the International Conference on Microelectronics, ICM*,

pp. 24-29, 2005.**Power consumption issues in high-speed high- resolution pipelined A/D converters**

R. Lotfi; Taherzadeh-Sani, M., Shoaei, O.;

In*Proceedings - IEEE International Symposium on Circuits and Systems*,

pp. 4618-4621, 2005.**Switched-opamp technique for 1-V 12-bit pipelined ADC**

Nabavi, M.R.; R. Lotfi;

In*Midwest Symposium on Circuits and Systems*,

pp. 851-854, 2005.**A low-voltage high-PSRR CMOS PTAT & constant-gm reference circuit**

Danaie, M.; R. Lotfi;

In*Midwest Symposium on Circuits and Systems*,

pp. 1807-1810, 2005.**A high-gain high-speed low-power class-AB operational amplifier**

Sarbishaei, H., Kahookar, T., Tabasy, E.Z.; R. Lotfi;

In*Midwest Symposium on Circuits and Systems*,

pp. 271-274, 2005.**Analysis of dynamic non-linearities in pipeline ADCs**

Taherzadeh-Sani, M.; R. Lotfi; Shoaei, O.;*IEICE Transactions on Electronics*,

Volume E87-C, Issue 6, pp. 976-984, 2004.**Pseudo-class-AB telescopic-cascode operational amplifier**

Taherzadeh-Sani, M.; R. Lotfi; Shoaei, O.;*Electronics Letters*,

Volume 40, Issue 4, pp. 219-221, 2004.**Systematic design for optimization of high-resolution pipelined ADCs**

Taherzadeh-Sani, M.; R. Lotfi; Shoaei, O.;

In*Proceedings - Design, Automation and Test in Europe Conference and Exhibition*,

pp. 678-679, 2004.**A pseudo-class-AB telescopic-cascode operational amplifier**

Taherzadeh-Sani, M.; R. Lotfi; Shoaei, O.;

In*Proceedings - IEEE International Symposium on Circuits and Systems*,

pp. I737-I740, 2004.**A 12-bit 40MSPS 3.3-V 56-mW pipelined A/D converter in 0.25-um CMOS**

R. Lotfi; Taherzadeh-Sani, M., Shoaei, O.;

In*Proceedings - IEEE International Symposium on Circuits and Systems*,

pp. I69-I72, 2004.**Low-power design techniques for low-voltage fast-settling operational amplifiers in switched-capacitor applications**

R. Lotfi; Taherzadeh-Sani, M., Yaser Azizi, M., Shoaei, O.;*Integration, the VLSI Journal*,

Volume 36, Issue 4, pp. 175-189, 2003.**A Low-Power Design Methodology for High-Resolution Pipelined Analog-to-Digital Converters**

R. Lotfi; Taherzadeh-Sani, M., Yaser Azizi, M., Shoaei, O.;

In*Proceedings of the International Symposium on Low Power Electronics and Design*,

pp. 334-339, 2003.**An analytical approach to the estimation of dynamic non-linearity parameters in pipeline A/D converters**

Taherzadeh-Sani, M.; R. Lotfi; Shoaei, O.;

In*European Solid-State Circuits Conference*,

pp. 715-718, 2003.**A 1-V 1-mW High-Speed Class AB Operational Amplifier for High-Speed Low Power Pipelined A/D Converters using "Slew Boost" Technique**

Aslanzadeh, H.A., Mehrmanesh, S., Vahidfar, M.B., Safarian, A.Q.; R. Lotfi;

In*Proceedings of the International Symposium on Low Power Electronics and Design*,

pp. 340-344, 2003.**An analytical approach to the estimation of the spurious-free dynamic range in pipeline A/D converters**

Taherzadeh-Sani, M.; R. Lotfi; Shoaei, O.;

In*Proceedings of the IEEE International Conference on Electronics, Circuits, and Systems*,

pp. 946-949, 2003.**A 1.5-V 12-BIT 75M-samples/s fully-differential low-power sample-and-hold amplifier in 0.25-Î¼m CMOS**

R. Lotfi; Tahenadeh-Sani, M., Shoaei, O.;

In*Proceedings of the IEEE International Conference on Electronics, Circuits, and Systems*,

pp. 814-817, 2003.**A New Architecture for Rail-to-Rail Input Constant-gm CMOS Operational Transconductance Amplifiers**

M.M. Ahmadi; R. Lotfi; Sharif-Bakhtiar, M.;

In*Proceedings of the International Symposium on Low Power Electronics and Design*,

pp. 353-358, 2003.**A novel frequency compensation technique for two-stage CMOS operational amplifiers**

Taherzadeh-Sani, M.; R. Lotfi; Shoaei, O.;

In*Proceedings of the IEEE International Conference on Electronics, Circuits, and Systems*,

pp. 256-259, 2003.**A Statistical Approach to Estimate the Dynamic Non-Linearity Parameters of Pipeline ADCs**

Taherzadeh-Sani, M.; R. Lotfi; Shoaei, O.;

In*IEEE/ACM International Conference on Computer-Aided Design, Digest of Technical Papers*,

pp. 367-370, 2003.**Systematic Design for Power Minimization of Pipelined Analog-to-Digital Converters**

R. Lotfi; Taherzadeh-Sani, M., Yaser Azizi, M., Shoaei, O.;

In*IEEE/ACM International Conference on Computer-Aided Design, Digest of Technical Papers*,

pp. 371-374, 2003.**A low-voltage low-power fast-settling operational amplifier for use in high-speed high-resolution pipelined A/D converters**

R. Lotfi; Shoaei, O.;

In*Proceedings - IEEE International Symposium on Circuits and Systems*,

pp. II/416-II/419, 2002.

## BibTeX support

Last updated: 14 Apr 2020

### Reza Lotfi

- +31 15 27 83679
- rlotfi@ieee.org
- Room: HB 18.060
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