A 0.8-V Low-Power Low-Cost CMOS Crystal Oscillator with High Frequency Accuracy

Jin, Yeran; Zhou, Bo; Liu, Yujie; Peng, Jida

doi:10.1109/icicm50929.2020.9292156

Cited by 3 publications

(2 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…R 0 in the above equation is the zero-point compensation resistor value. The design of a crystal oscillator with low phase noise is crucial for a phase-locked loop with low phase noise, as the phase noise of the oscillator has a significant impact on the in-band noise [26]. Among various sources influencing the phase noise of the crystal oscillator, power supply noise has a substantial effect due to the high Q value of the crystal.…”

Section: Design Of Broadband Ldomentioning

confidence: 99%

A Low Phase Noise Crystal Oscillator with a Fast Start-Up Bandgap Reference for WLAN Applications

Chen

et al. 2023

Applied Sciences

View full text Add to dashboard Cite

This article presents the design and implementation of a 40 MHz crystal oscillator (XO) with low phase noise, based on the 55 nm CMOS process, for wireless transceiver systems, particularly those used in Wireless Local Area Network (WLAN). The proposed design employs a bandgap reference circuit that includes a start-up circuit and a low-voltage common-source common-gate current mirror, which ensures that the bandgap reference circuit is powered up effectively across all temperatures and process corners. A low-pass filter is also incorporated at the low dropout regulator (LDO) input to reduce the phase noise of the XO circuit. The experimental results demonstrate that the proposed design achieves a final phase noise of −164.36 dBc/Hz at 100 kHz offset frequency, with a power consumption of 0.444 mW. The test of start-up time is 0.718 ms and the compact chip area is 0.088 mm2. According to the simulation and test results, the final FOM value calculated in this paper is 209.93 dBc/Hz at 100 kHz offset.

show abstract

Section: Design Of Broadband Ldomentioning

confidence: 99%

A Low Phase Noise Crystal Oscillator with a Fast Start-Up Bandgap Reference for WLAN Applications

Chen

et al. 2023

Applied Sciences

View full text Add to dashboard Cite

show abstract

“…By utilizing a delta-sigma modulator to switch the load capacitance between the two values, temperature compensation can be accomplished with an efficient use of space and power. The typical three-point Colpitts architecture-based crystal oscillator is presented to achieve lower power dissipation and greater frequency accuracy performance [21].…”

Section: Crystal Oscillatormentioning

confidence: 99%

A PVT tolerant voltage-controlled oscillator for automotive applications

Chen¹

View full text Add to dashboard Cite

This thesis focusses on the development of an integrated oscillator for automotive applications. The oscillator operates based on the Barkhausen criterion, which is a mathematical requirement used in electronics to predict whether a linear electronic circuit will oscillate. In this thesis, a voltage-controlled oscillator is designed for increased performance under various process, voltage and temperature (PVT) conditions. By applying a voltage reference block, the output frequency of 0.5MHz, 0.75MHz, 1MHz or 1.25MHz can be obtained. In order to compensate for the variations at PVT corners, the trimming technology is applied to increase the accuracy. The supply voltage is considered to be varying between 2.1V and 5.5V while the temperature range is -40oC -125oC.

show abstract