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A 30-MHz, 90-ppm/°C fully-integrated clock reference generator with frequency-locked loop

Ken Ueno, Tetsuya Asai, Yoshihito Amemiya
2009 2009 Proceedings of ESSCIRC  
This clock generator can be used as an on-chip reference clock circuit.  ...  This generator is based on a simple frequency-locked loop technique and can be implemented monolithically without using LC resonant circuits, quartz resonators, and MEMS oscillators.  ...  The circuit is based on a simple frequency-locked loop and needs no reference voltage and current but can generate a clock frequency that is insensitive to temperature and supply voltage.  ... 
doi:10.1109/esscirc.2009.5325940 dblp:conf/esscirc/UenoAA09 fatcat:wa6b7tg2wjctjky5oq272czh3m

An Improved Current-Mode Squarer/Divider Circuit for Automotive Applications

X. YIN, P. OSSIEUR, T. D. RIDDER, J. BAUWELINCK, X.-Z. QIU, J. VANDEWEGE
2008 IEICE transactions on electronics  
The proposed circuit technique increases the accuracy of the squarer/divider function with better input dynamic range and temperature insensitivity.  ...  Simulation results show that the variation of the output current is within ±0.2% over the temperature range from −40 • C to 140 • C.  ...  The base voltage of Q 7 is a replica of the base voltage of Q 3 , which is generated by Q 8 in the replica bias circuit.  ... 
doi:10.1093/ietele/e91-c.2.232 fatcat:lkazbbxb2vcubh2rdigg7g5elq

Low-power clock reference circuit for intermittent operation of subthreshold LSIs

Ken Ueno, Tetsuya Asai, Yoshihito Amemiya
2009 2009 IEEE International Symposium on Circuits and Systems  
A low power on-chip reference clock generator consisting of subthreshold MOSFET circuits is proposed.  ...  Our clock generator can be used as a reference clock for intermittent operation in power aware LSIs.  ...  The circuit makes use of a frequency-locked feedback loop and generates a clock frequency that is insensitive to temperature and the supply voltage. II.  ... 
doi:10.1109/iscas.2009.5117671 dblp:conf/iscas/UenoAA09 fatcat:v3w2qoyk5re67dkya5eo7n2zeu

Temperature compensation method for logarithmic CMOS vision sensor using CMOS voltage reference Bandgap technique

Hakim Zimouche, Gilles Sicard
2010 2010 17th IEEE International Conference on Electronics, Circuits and Systems  
As systems using Bandgap technique, our circuits generate VPT ATI and VPT AT2 voltages to compensate temperature variation of the sensor output signal voltage (Out AC-Signal voltage) which we call VCTATI  ...  The proposed method uses simple circuits located in the column amplifier.  ...  ATl and VPT AT2 generator circuits.  ... 
doi:10.1109/icecs.2010.5724660 dblp:conf/icecsys/ZimoucheS10 fatcat:rb4yjhum35eknc7j7h47fha4nq

Low-power voltage to a frequency-based smart temperature sensor with +0.8/--0.75 $^{\circ}$C accuracy for --55 $^{\circ}$C to 125 $^{\circ}$C

Mudasir BASHIR, Sreehari Rao PATRI, Krishna PRASAD
2017 Turkish Journal of Electrical Engineering and Computer Sciences  
Therefore, a compact smart temperature is introduced with embedded temperature insensitive reference signal generators.  ...  The sensor exploits the thermal dependency of the threshold voltage of MOS transistors to generate a voltage proportional to absolute temperature ( VP T AT ) .  ...  The frequency is then given to an asynchronous 12-bit counter for digital output. An on-chip temperature insensitive clock and voltage references are developed to generate the references signals.  ... 
doi:10.3906/elk-1706-234 fatcat:iq62xq4n45gktjcqrrae7o5ebe

A new CMOS voltage reference scheme based on Vth-difference principle

Luis Toledo, Walter Lancioni, Pablo Petrashin, Carlos Dualibe, Carlos Vazquez
2007 2007 IEEE International Symposium on Circuits and Systems  
When the input power supply changes from 1.8V to 2.1V and the temperature changes from -20 to 80ºC, simulations for the reference circuit using the proposed architecture shows an output voltage of 1.184V  ...  a new CMOS voltage reference, which takes advantage of the temperature dependence of NMOS and PMOS threshold voltages, is presented.  ...  insensitive to the power supply and temperature.  ... 
doi:10.1109/iscas.2007.377876 dblp:conf/iscas/ToledoLPDV07 fatcat:i6o4tujrbzal5g7uv3yisbgaty

A Novel Seven Level Inverter using Static and Dynamic Loads

C. R. Balamurugan, S. P. Natarajan, T. S. Anandhi
2015 International Journal of Power Devices and Components for Smart Device  
This paper describes a temperature and supply voltage insensitive programmable current reference using floating gate MOSFETs.  ...  The circuit has a wide operating temperature from 0 o C to 100 o C and supply voltage range from 0.5 V to 2.5 V.  ...  Figure 3 . 3 The proposed circuit of temperature insensitive voltage and current reference using FGMOS Figure 4 . 4 β Figure 5 .Figure 6 . 56 (a) Variation of reference current with supply voltage  ... 
doi:10.21742/ijpdcsd.2015.2.02 fatcat:qjs6l725jzbvxbjb55w6l46kfm

Towards temperature-stable level shifters

Yi Huang, Fanpeng Kong, Laleh Najafizadeh
2014 2014 IEEE International Conference on Electron Devices and Solid-State Circuits  
A family of temperature stable level shifter circuits, covering a wide range of voltage level shifts, is presented in this paper.  ...  Design analysis is provided for both shift-up and shift-down circuits. Circuits are designed in 0.13 Mm BiCMOS technology, and simulation results are presented.  ...  Bandgap Reference circuits (BGRs) are designed to gen erate temperature independent voltages/currents.  ... 
doi:10.1109/edssc.2014.7061283 fatcat:ekw47y6uanhzjftkl3hfmcoupq

Energy Efficient Bandgap Reference Generator for RFID Transponder EEPROM in 130 nm CMOS Process

2019 International journal of recent technology and engineering  
Therefore, generating an internal reference voltage (VR) for the power management unit is the key challenges for researchers to design such applications.  ...  Bandgap reference (BGR) is an essential module that assures temperature and independent VR supply in analog circuits.  ...  ACKNOWLEDGMENTS The authors would like to show sincere gratitude to Universiti Tenaga Nasional and Universiti Kebangsaan Malaysia for helping the successful completion of this research work.  ... 
doi:10.35940/ijrte.d5151.118419 fatcat:ca6hi4k7rbgitehvq5h4w6rnga

A compact low-power supply-insensitive CMOS current reference

Chen Zhao, Randall Geiger, Degang Chen
2012 2012 IEEE International Symposium on Circuits and Systems  
The area required for this reference is small and the sensitivity of the output current to the supply voltage is low.  ...  A simple low-power current reference using dualthreshold MOS transistors is introduced.  ...  Traditionally, the bandgap voltage reference combined with a resistor is used to generate a reference current.  ... 
doi:10.1109/iscas.2012.6271899 dblp:conf/iscas/ZhaoGC12 fatcat:fr44iqd275hobeipnqm2xnsxjm

Low-dropout voltage reference: an approach to low-temperature-sensitivity architectures with high drive capability

H. Aminzadeh, R. Lotfi, K. Mafinezhad
2009 Electronics Letters  
A modified circuit topology for voltage references capable of providing very high load current with low-temperature-sensitivity output voltage is presented.  ...  Employing a proportional-to-absolute-temperature current source and a complementary-to-absolute-temperature voltage source in a novel closed-loop configuration, the output voltage can be tuned over a wide  ...  In addition to generating the required PTAT current, this circuit is also used to bias the amplifier core of the reference.  ... 
doi:10.1049/el.2009.1531 fatcat:7mgfoxiiarctzm6pldlnntepwu

A Nano-Watt Dual-Output Subthreshold CMOS Voltage Reference

Jie Lin, Lidan Wang, Yan Lu, Chenchang Zhan
2020 IEEE Open Journal of Circuits and Systems  
In such a way, two different voltage references can be generated in one compact and simple design to reduce the devices and chip area significantly, compared to two separate voltage references in a conventional  ...  The V REF1 is designed by employing the V TH difference between two devices to compensate the temperature coefficient (TC) of the thermal voltage.  ...  Conventional BGR generates a near temperature insensitive reference of about 1.2V [1] , [2] , which requires a high supply voltage and power consumption.  ... 
doi:10.1109/ojcas.2020.3005546 fatcat:tyaxktqm35f53aguf2xd7lixbm

A Temperature-compensated CMOS Ring Oscillator for DC-DC converters

Xia Xiaojuan, Ji XinCun, Guo Yufeng, Zhu Bing, Wang Lei
2013 IEICE Electronics Express  
Specially circuit structure and transistor parameters design is used to obtain good temperature coefficient.  ...  The test result shows that the frequency is about 1.2 MHz and the error (Δf/f) is about 3.5% in the temperature range À20-100℃. The circuit is quite suitable for DC-DC converters.  ...  In some other design, low temperature coefficient current, two voltage references and comparators are needed to generate temperature-independent frequency.  ... 
doi:10.1587/elex.10.20130833 fatcat:e34i3v2akjcsrdvtzkulhjmu3u

A temperature-insensitive gate-controlled weighted current digital-to-analog converter

Pradeep Namburu, Robert Veillette, Joan Carletta, Michael Ward
2010 2010 53rd IEEE International Midwest Symposium on Circuits and Systems  
The design also achieves temperature-insensitive operation by operating the PMOS current sources at the Zero Temperature Coefficient (ZTC) voltage, when they are turned ON.  ...  The design implements a new architecture of current-mode MOSFET DAC referred to as a gate-controlled DAC, which is found to overcome the non-linearity problems faced by the conventional drain-controlled  ...  The bias generation circuit used in this work to create the bias for the current sources is shown to have a variation of 0.9 mV in the output voltage over a temperature range of 27 o C to 125 o C.  ... 
doi:10.1109/mwscas.2010.5548739 fatcat:ejy6efrcd5eabeuxotkzari62y

ULTRA-LOW POWER VOLTAGE REFERENCE CIRCUIT UTILIZING A THRESHOLD VOLTAGE DIFFERENCE BETWEEN TWO CNFETS

S.B. Rahane, A.K. Kureshi, G.K. Kharate
2018 ICTACT Journal on Microelectronics  
The circuit produces a reference voltage of 203mV at 0.5V supply voltage, consumes only 3.42pW power and exhibits excellent temperature and power supply independence.  ...  This paper proposes a voltage reference circuit that exploits subthreshold conduction and threshold voltage difference between two carbon nanotube field effect transistors (CNFETs) to achieve ultra-low  ...  Incorporation of amplifiers in voltage references results in improved temperature and supply voltage insensitivity [7] - [8] .  ... 
doi:10.21917/ijme.2018.0093 doaj:5f0dc38abd7f4775ba9bfc18c09e11c4 fatcat:wbhsxthlqjfl5bag3srgitkxca
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