A sub 1V self clocked switched capacitor bandgap reference with a current consumption of 180nA

Wiessflecker, Martin; Hofer, Günter; Holweg, Gerald; Reinisch, Hannes; Pribyl, Wolfgang

doi:10.1109/iscas.2012.6271903

Cited by 6 publications

(3 citation statements)

References 9 publications

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“…Every supply voltage can be adjusted separately from 0.9 V to 1.5 V, using 0.1 V steps. The actual temperature measurement takes place in an ultra-low power bandgap which is described in detail in [6]. This block is used to generate a low noise voltage and current references (240 nA) for the analog circuitry including a low power oscillator and an Analog to Digital Converter (ADC).…”

Section: General Description Of the Systemmentioning

confidence: 99%

Intelligent plaster for accurate body temperature monitoring and investigations regarding EMI using near-field magnetic scan

Kollegger

Steffan

Greiner

et al. 2016

Elektrotech. Inftech.

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A wireless self-sufficient human body temperature monitoring system was designed using a 130 nm CMOS standard process. This miniaturized sensor grain enables significant cost advantages and impresses with its high level of integration. The RFID communication protocol ensures compatibility with state-of-the-art smart phones and tablets, thus facilitating point-of-care as well as end-user utilization. The biocompatible plaster enables cyclic measurements and also storage of the obtained data. In the range of 35°C to 42°C a ±3σ accuracy of ±0.4°C can be achieved. The system is powered by a lithium based micro battery, which can be recharged wirelessly by any state-of-the-art near field communication device. Measurement data and monitoring history can be displayed via an Android™ software application on a commercial NFC compatible smartphone. The configuration and calibration data as well as the measurement results are stored in the integrated EEPROM. The main advantage of this system appliance is, that it can be easily used within the scope of medical attendance as well as home health care. For the save usage in hospitals additional investigations regarding Electromagnetic Interference using Near-Field Magnetic Scan were performed. Intelligentes Pflaster für die genaue Überwachung der Körpertemperatur und Untersuchungen bezüglich elektromagnetischer Störungen unter Verwendung eines Nahfeld-Magnet-Scanners. Ein drahtloses Temperaturüberwachungssystem wurde in einem 130 nm Standard-CMOS-Prozess realisiert. Dieser miniaturisierte Sensorchip punktet durch erhebliche Kostenvorteile und beeindruckt durch seinen hohen Integrationsgrad. Das verwendete RFIDKommunikationsprotokoll garantiert die Kompatibilität mit modernsten Smartphones und Tablets, was die Vor-Ort-Diagnose als auch die Verwendung durch den Privatanwender erleichtert. Das biokompatible Pflaster ermöglicht zyklische Messungen sowie die Speicherung der gewonnenen Daten. Im Bereich von 35°C bis 42°C kann eine ±3-Sigma-Genauigkeit von ±0.4°C erreicht werden. Das System wird durch einen Mikro-Lithium-Akku versorgt, welcher kabellos durch jedes kommerziell erhältliche Nahfeldkommunikationsgerät aufgeladen werden kann. Die Messdaten und der Temperaturverlauf können mit einer Android™-Software-Applikation abgerufen und dargestellt werden. Die Konfigurations-und Kalibrierdaten werden im integrierten EEPROM gespeichert. Der Vorteil dieser Applikation ist die einfache Handhabung im Rahmen der ärztlichen Betreuung als auch in der häuslichen Krankenpflege. Zusätzlich wurden -für die bedenkenlose Verwendung in Krankenhäusern -Untersuchungen bezüglich elektromagnetischer Störausstrahlungen durchgeführt.

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Section: General Description Of the Systemmentioning

confidence: 99%

Intelligent plaster for accurate body temperature monitoring and investigations regarding EMI using near-field magnetic scan

Kollegger

Steffan

Greiner

et al. 2016

Elektrotech. Inftech.

Self Cite

View full text Add to dashboard Cite

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“…This is because of low positive temperature coefficient of current. Sub 1-V bandgap voltage references are described in [3][4][5][6][7][8]. However, since these bandgap references have complex structure or have high current, they occupy large area or consume high power.…”

Section: Introductionmentioning

confidence: 99%

A sub 1V CMOS bandgap reference with two diodes

Choi

Cho

Kim

2016

MATEC Web of Conferences

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Abstract.A small size, sub 1V CMOS bandgap voltage reference with the temperature coefficient (TC) of 12ppm/˚C from 0˚C to 100˚C is presented in this paper. The proposed circuit offers several performance advantages over previous bandgap voltage reference circuits. Compared to a conventional structure, it achieves a smaller area by using only two diodes. Also, it can fulfil sub 1V reference voltage by using temperature coefficient of threshold voltage to generate a current proportional to absolute temperature. This is because TC of this current on proposed circuit is bigger than that of conventional structure. Detailed analysis of the proposed bandgap reference is provided, which is simulated using 0.35μm CMOS process. The proposed bandgap reference occupies an active area of 0.0067mm 2 . The simulation results are the voltage reference output voltage of 0.843V and an accuracy of ±0.08%.

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“…An ABC is a well-known circuit that can be used to increase the operation speed of an AMP without a significant increase in power dissipation. [5][6][7][8][9][10] Several adaptive biasing AMPs [11][12][13][14][15][16] have been proposed. The AMPs are based on a symmetrical AMP 17) because a symmetrical AMP is easy to design owing to its simple circuit configuration.…”

Section: Introductionmentioning

confidence: 99%

Nano watt power rail-to-rail CMOS amplifier with adaptive biasing circuits for ultralow-power analog LSIs

Ozaki¹,

Hirose²,

Tsubaki³

et al. 2015

Jpn. J. Appl. Phys.

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In this paper, we present a rail-to-rail folded-cascode amplifier (AMP) with adaptive biasing circuits (ABCs). The circuit uses a nano ampere current reference circuit to achieve ultralow-power and ABCs to achieve high-speed operation. The ABCs are based on conventional circuits and modified to be suitable for rail-to-rail operation. The measurement results demonstrated that the AMP with the proposed ABCs can operate with an ultralow-power of 384 nA when the input voltage was 0.9 V and achieve high speeds of 0.162 V/µs at the rise time and 0.233 V/µs at the fall time when the input pulse frequency and the amplitude were 10 kHz and 1.5 Vpp, respectively.

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A sub 1V self clocked switched capacitor bandgap reference with a current consumption of 180nA

Cited by 6 publications

References 9 publications

Intelligent plaster for accurate body temperature monitoring and investigations regarding EMI using near-field magnetic scan

Intelligent plaster for accurate body temperature monitoring and investigations regarding EMI using near-field magnetic scan

A sub 1V CMOS bandgap reference with two diodes

Nano watt power rail-to-rail CMOS amplifier with adaptive biasing circuits for ultralow-power analog LSIs

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