A low power sub-BGR with multi-curvature self-compensation

Mu, Junchao; Liu, Shubin

doi:10.1007/s10470-017-0963-x

Cited by 2 publications

(2 citation statements)

References 14 publications

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“…Under 1.2 V power supply, a steady 66 mV output reference voltage can be generated. Within the temperature range of -100 to 145 °C, the temperature coefficient is 8.5426 ppm/°C and the bandgap voltage reference circuit area is 0.00396 mm 2 . When the power supply increases from 1.0491 V to 2 V, the line sensitivity is 0.19245 mV/V.…”

Section: Resultsmentioning

confidence: 99%

“…It is widely used in various analog integrated circuits so as to produce a DC voltage insusceptible to power supply, process and temperature [1]. Nowadays, the development of Internet of things (IOTs) increases rapidly and the integration of chips grows increasingly higher, so design requirements such as precision, power consumption, temperature range and area of the bandgap voltage reference also enhances [2,3].…”

Section: Introductionmentioning

confidence: 99%

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Design of a Bandgap Voltage Reference Working in Subthreshold Region with Low Voltage, High Precision in a Wide Temperature Range

Dai¹,

Li²,

An³

et al. 2018

dtetr

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Abstract. In this paper, a bandgap voltage reference working with high precision in a wide temperature range is proposed. The proposed bandgap voltage reference adopts self-biased structure without using resistor and operational amplifier. It adopts 6 stages of the proportional to absolute temperature circuit to increase temperature range. And it uses linearity compensation circuit to improve the temperature coefficient. Supported by GSMC 0.13 µm technology, with 1.2V supply voltage, the proposed bandgap voltage reference can generate a steady 66 mV reference voltage. Within the temperature range of -100 to 145 °C, the temperature coefficient is 8.5486 ppm/°C and the line sensitivity is 0.19245 mV/V. And the bandgap voltage reference covers a core area of 0.00396 mm 2 .

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design of a Bandgap Voltage Reference Working in Subthreshold Region with Low Voltage, High Precision in a Wide Temperature Range

Dai¹,

Li²,

An³

et al. 2018

dtetr

View full text Add to dashboard Cite

show abstract

A New Sub-1 Volt 17ppm/°C Offset-Insensitive Resistorless Switched-capacitor Bandgap Voltage Reference

Ebrahimi

Arabnasery

2020

J CIRCUIT SYST COMP

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A new PVT compensated voltage reference is presented by using switched-capacitor (S.C.) technique. In the proposed bandgap voltage reference (BGR), a p–n junction is biased with different currents during two different phases and required PTAT and CTAT voltages generated and held by two capacitors. Using a capacitive voltage divider, the PTAT voltage is weighted such that the sub-1V bandgap voltage is achievable. In order to cancel the effect of op-amp offset and to relax the design of op-amp, the offset voltage of the op-amp is sampled by a capacitor during a specified phase and inversely is added to the final bandgap voltage in next phase. The analysis of the proposed S.C. BGR is supplemented by simulation of a 0.5-V BGR with 28[Formula: see text][Formula: see text][Formula: see text]W power consumption in a standard 0.18[Formula: see text][Formula: see text][Formula: see text]m CMOS technology. Simulation results show that the average temperature coefficient of the S.C. BGR is 17[Formula: see text]ppm/∘C and it is robust against the process variations. Applying an arbitrary 100-mV op-amp offset results in a lower than 1.1[Formula: see text]mV deviation in generated reference voltage. Due to the better matching of MIM capacitors in CMOS process (rather than resistors used in conventional BGR) the proposed S.C. bandgap provides good accuracy without any post trimming. Monte–Carlo analysis shows that [Formula: see text]/[Formula: see text] of the generated reference voltage is as low as 0.7%. The sensitivity of the proposed BGR to supply variation is also less than 1%/V.

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A low power sub-BGR with multi-curvature self-compensation

Cited by 2 publications

References 14 publications

Design of a Bandgap Voltage Reference Working in Subthreshold Region with Low Voltage, High Precision in a Wide Temperature Range

Design of a Bandgap Voltage Reference Working in Subthreshold Region with Low Voltage, High Precision in a Wide Temperature Range

A New Sub-1 Volt 17ppm/°C Offset-Insensitive Resistorless Switched-capacitor Bandgap Voltage Reference

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