A Fully Integrated 16-MHz Voltage-Mode Relaxation Oscillator With Current Calibration for Temperature Compensation

IF 4.6 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Circuits and Systems II: Express Briefs Pub Date : 2026-04-01 Epub Date: 2026-02-06 DOI:10.1109/TCSII.2026.3661186

Jaekwang Yun;Jooyeol Rhee

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引用次数: 0

Abstract

This brief presents a fully integrated 16-MHz on-chip voltage-mode relaxation oscillator that employs a current calibration technique for temperature. Fabricated in a 130nm CMOS process, the prototype occupies only 0.048mm

${}^{\mathbf {2}}$

of active area. The proposed calibration method leverages an on-chip bandgap reference to stabilize the oscillator’s reference current and control voltage against temperature variations. With calibration enabled, the oscillator’s temperature coefficient is reduced from 405.83 ppm/°C to 93.83 ppm/°C, with an average of 77.32 ppm/°C measured from–

$40~^{\circ }$

C to

$80~^{\circ }$

C, demonstrating significantly improved frequency stability. Operating at 16 MHz, the design consumes

$60\mu $

W, corresponding to a power efficiency figure of merit (FoM

${}_{\mathbf {1}}$

) of

$3.75~\mu $

W/MHz, and achieves a phase noise FoM (FoM

${}_{\mathbf {2}}$

) of–142.3 dBc/Hz. These results confirm that the proposed oscillator provides a compact, low-power clock source with excellent temperature stability.

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一个完全集成的16 mhz电压模式弛豫振荡器与温度补偿电流校准

本简介介绍了一个完全集成的16 mhz片上电压模式弛豫振荡器，该振荡器采用温度电流校准技术。该原型机采用130nm CMOS工艺制造，仅占用0.048mm ${}^{\mathbf{2}}$的有源面积。所提出的校准方法利用片上带隙基准来稳定振荡器的参考电流和控制电压以抵抗温度变化。启用校准后，振荡器的温度系数从405.83 ppm/°C降至93.83 ppm/°C，从- $40~^{\circ}$ C到$80~^{\circ}$ C的平均测量值为77.32 ppm/°C，显示出显著提高的频率稳定性。该设计工作在16 MHz时，功耗为$60\mu $ W，对应的功率效率值（FoM ${}_{\mathbf{1}}$）为$3.75~\mu $ W/MHz，相位噪声FoM （FoM ${}_{\mathbf{2}}$）为- 142.3 dBc/Hz。这些结果证实，所提出的振荡器提供了一个紧凑，低功耗的时钟源，具有优异的温度稳定性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Transactions on Circuits and Systems II: Express Briefs 工程技术-工程：电子与电气

CiteScore

7.90

自引率

20.50%

发文量

883

审稿时长

3.0 months

期刊介绍： TCAS II publishes brief papers in the field specified by the theory, analysis, design, and practical implementations of circuits, and the application of circuit techniques to systems and to signal processing. Included is the whole spectrum from basic scientific theory to industrial applications. The field of interest covered includes: Circuits: Analog, Digital and Mixed Signal Circuits and Systems Nonlinear Circuits and Systems, Integrated Sensors, MEMS and Systems on Chip, Nanoscale Circuits and Systems, Optoelectronic Circuits and Systems, Power Electronics and Systems Software for Analog-and-Logic Circuits and Systems Control aspects of Circuits and Systems.