A 1.8 V 18.13 MHz Inverter-Based On-Chip RC Oscillator with Flicker Noise Suppression Using Logic Transition Voltage Feedback

Ko, Junsoo; Lee, Minjae

doi:10.3390/electronics8111353

Cited by 7 publications

(5 citation statements)

References 1 publication

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“…An inverter-based RC relaxation oscillator circuit shown in Fig. 4 was adopted as the sensor interface circuit [18]. Its operation is as follows.…”

Section: Rc Relaxation Oscillatormentioning

confidence: 99%

RC-Oscillator-Based Battery-Less Wireless Sensing System Using RF Resonant Electromagnetic Coupling

LI,

LEE,

ISHIHARA

et al. 2024

IEICE Trans. Fundamentals

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A wireless sensor terminal module of 5cc size (2.5cm x 2.5cm x 0.8cm) that does not require a battery is proposed by integrating three kinds of circuit technologies. (i) a low-power sensor interface: an FM modulation type CMOS sensor interface circuit that can operate with a typical power consumption of 24.5𝜇W was fabricated by the 0.7-m CMOS process technology. (ii) power supply to the sensor interface circuit: a wireless power transmission characteristic to a small-sized PCB spiral coil antenna was clarified and applied to the module. (iii) wireless sensing from the module: backscatter communication technology that modulates the signal from the base terminal equipment with sensor information and reflects it, which is used for the low-power sensing operation.The module fabricated includes a rectifier circuit with the PCB spiral coil antenna that receives wireless power transmitted from base terminal equipment by electromagnetic resonance coupling and converts it into DC power and a sensor interface circuit that operates using the power. The interface circuit modulates the received signal with the sensor information and reflects it back to the base terminal.The module could achieve 100 mm communication distance when 0.4 mW power is feeding to the sensor terminal.

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“…An inverter-based RC relaxation oscillator circuit shown in Fig. 4 was adopted as the sensor interface circuit [18]. Its operation is as follows.…”

Section: Rc Relaxation Oscillatormentioning

confidence: 99%

RC-Oscillator-Based Battery-Less Wireless Sensing System Using RF Resonant Electromagnetic Coupling

LI,

LEE,

ISHIHARA

et al. 2024

IEICE Trans. Fundamentals

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show abstract

“…Figure 1 shows the basic structure of the single comparator RC oscillator of this design, which consists of a comparator, two-branch capacitor charging and discharging circuits, and multiple switching controls [2] . Vref is the reference voltage, V1 is the output oscillation waveform, I1 and I3 are the charging current sources, I2 and I4 are the capacitor discharge current sources, and I1-I4 current source current size is the same so that the two capacitors charge and discharge the same time to achieve the effect of 50% duty cycle [3] . Conventional RC oscillators use a dual comparator and dual capacitor structure, while a single comparator and single capacitor circuit structure can be used to save area [4] .…”

Section: Basic Rc Oscillatormentioning

confidence: 99%

High-precision Low-power Low-temperature Drift Dropout Voltage Cancellation Oscillator

Zhang,

Huang

2023

J. Phys.: Conf. Ser.

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As electronic products continue to develop, the requirements for the accuracy of integrated circuits continue to increase. Oscillators play a more important role in integrated circuits, and higher requirements are placed on the power consumption as well as the accuracy of oscillators. In this paper, a high-precision and low-power consumption RC oscillator is designed. The oscillator in this paper consists of a bias module and a capacitor charging and discharging module and provides bias current and voltage with temperature coefficient through bandgap to reduce the change of oscillator operating frequency caused by the increase of ambient temperature in traditional oscillators, which improves the oscillator operating state under different temperatures and the accuracy of the oscillator. The single comparator oscillator structure is also designed to effectively eliminate the effect of the dropout voltage on the oscillation period. The oscillator is simulated by using the MGN 0.18 μm process.

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“…2(b). As the devices are working in the sub-threshold region, the drain current of these transistors can be calculated by the following formula [19]:…”

Section: Proposed Architecturementioning

confidence: 99%

A fully integrated RC oscillator with adaptive-body-biasing

Zhao

Yin

et al. 2022

IEICE Electron. Express

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A fully integrated CMOS RC oscillator is presented. The oscillator is inverter-based. An adaptive body biasing(ABB) scheme is proposed to regulate the trip point of the decision inverter adaptively, thus alleviating the frequency variation over PVT. To achieve low power consumption all components are in the sub-threshold region. The circuit is designed in a 55-nm CMOS process with an area of 0.052 mm 2 . The simulation result shows a temperature sensitivity of 59 ppm/℃ from -40~125℃ which achieves a 72 ppm/℃ reduction as compared to an oscillator without ABB. the oscillator operates at 33kHz and consumes 183 nW from a 0.6V supply.

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A 1.8 V 18.13 MHz Inverter-Based On-Chip RC Oscillator with Flicker Noise Suppression Using Logic Transition Voltage Feedback

Cited by 7 publications

References 1 publication

RC-Oscillator-Based Battery-Less Wireless Sensing System Using RF Resonant Electromagnetic Coupling

RC-Oscillator-Based Battery-Less Wireless Sensing System Using RF Resonant Electromagnetic Coupling

High-precision Low-power Low-temperature Drift Dropout Voltage Cancellation Oscillator

A fully integrated RC oscillator with adaptive-body-biasing

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