Fully-integrated timers for ultra-low-power Internet-of-Things nodes—Fundamentals and design techniques

MHW Loo, H Ramiah, KM Lei, CC Lim, NS Lai… - IEEE …, 2022 - ieeexplore.ieee.org
Driven by the momentum toward compact and low-power Internet-of-Things (IoT) systems,
the research on fully-integrated and energy-efficient kHz-to-MHz timers increased …

A 0.01 mm2 10MHz RC Frequency Reference with a 1-Point On-Chip-Trimmed Inaccuracy of from to in 0.18μm CMOS

X An, S Pan, H Jiang… - 2023 IEEE International …, 2023 - ieeexplore.ieee.org
CMOS frequency references based on RC oscillators are usually preferred over bulky
crystals in loT applications 1–5. However, due to the process spread and finite temperature …

3D position tracking using on-chip magnetic sensing in image-guided navigation bronchoscopy

M Srivastava, K O'Donoghue, A Sidun… - … Circuits and Systems, 2024 - ieeexplore.ieee.org
This paper presents a compact and low-cost on-chip sensor and readout circuit. The sensor
achieves high-resolution 5-degrees-of-freedom (DoF) tracking (x, y, z, yaw, and pitch). With …

A 1-μW/MHz RC Oscillator With Three-Point Trimmed 2.1-ppm/°C and Single-Point Trimmed 8.7-ppm/°C Stability From40 °C to 95 °C

KS Park, A Khashaba, A Abdelrahman… - IEEE Journal of Solid …, 2022 - ieeexplore.ieee.org
This article presents techniques to improve the frequency stability of oscillators by
performing first-and second-order temperature compensation without needing resistors with …

A compact 10-MHz RC frequency reference with a versatile temperature compensation scheme

S Pan, X An, Z Yu, H Jiang… - IEEE Journal of Solid …, 2023 - ieeexplore.ieee.org
This article presents the design and implementation of a compact CMOS RC frequency
reference. It consists of a frequency-locked loop (FLL) that locks the period of a voltage …

A 20-μs Turn-On Time, 24-kHz Resolution, 1.5–100-MHz Digitally Programmable Temperature-Compensated Clock Generator

Y Li, N Pal, T Wang, MG Ahmed… - IEEE Journal of Solid …, 2022 - ieeexplore.ieee.org
A clock generator using a fast-locking frequency-locked loop (FLL)-based RC oscillator and
delta-sigma fractional dividers (FDIVs) to generate programmable temperature-insensitive …

Design and analysis of a resistive frequency-locked oscillator with long-term stability using double chopper stabilization

KW Cheng, SK Chang, BS Li… - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
A resistive frequency-locked loop on-chip oscillator based on a double chopper stabilization
technique is proposed for the improvement of frequency stability. The temperature-sensitive …

A 28-nm 368-fJ/Cycle, 0.43%/V Supply-Sensitivity, FLL-Based RC Oscillator Featuring Positive-TC-Only Resistors and ΔΣM-Based Trimming

Y Huang, Y Chen, K Yang, P Crovetti… - … on Circuits and …, 2023 - ieeexplore.ieee.org
This brief presents a process-scaling-friendly frequency-locked-loop (FLL)-based RC
oscillator. It features an RRC frequency-to-voltage converter that entails resistors with only …

A 0.08%/V 32.3-ppm/C 36.6-kHz Unregulated Current-Reuse Ring Oscillator With -Ratio-Based Compensation Using One-Type-Only Resistor

Z Dong, S Liu, X Zhao, B Hao, X Su… - IEEE Journal of Solid …, 2024 - ieeexplore.ieee.org
This article introduces a 36.6-kHz unregulated ring oscillator (RO) tailored for Internet-of-
Things (IoT) applications, demonstrating robustness to variations in supply voltage and …

A Fully Integrated, Low-Noise, Cost-Effective Single-Crystal-Oscillator-Based Clock Management IC in 28-nm CMOS

J Jung, S Oh, J Kim, J Lee, W Kim… - IEEE Journal of Solid …, 2023 - ieeexplore.ieee.org
This article proposes a fully integrated single-crystal oscillator (XO)-based clock
management IC (CMIC) with three key features for 5G cellular mobile devices. First, to …