A 1-<inline-formula> <tex-math notation="LaTeX">$\mu$</tex-math> </inline-formula>W/MHz <inline-formula> <tex-math notation="LaTeX">$RC$</tex-math> </inline-formula> Oscillator With Three-Point Trimmed 2.1-ppm/<inline-formula> <tex-math notation="LaTeX">$^\circ$</tex-math> </inline-formula>C and Single-Point Trimmed 8.7-ppm/<inline-formula> <tex-math notation="LaTeX">$^\circ$</tex-math> </inline-formula>C Stability From <inline-formula> <tex-math notation="LaTeX">$-$</tex-math> </inline-formula>40 <inline-formula> <tex-math notation="LaTeX">$^\circ$</tex-math> </inline-formula>C to 95 <inline-formula> <tex-math notation="LaTeX">$^\circ$</tex-math> </inline-formula>C

Kyu Sang Park; Amr Khashaba; Ahmed Abdelrahman; Yongxin Li; Tianyu Wang; Ruhao Xia; Nilanjan Pal; Pavan Kumar Hanumolu

doi:10.1109/JSSC.2022.3227191

A 1-<inline-formula> <tex-math notation="LaTeX">$\mu$</tex-math> </inline-formula>W/MHz <inline-formula> <tex-math notation="LaTeX">$RC$</tex-math> </inline-formula> Oscillator With Three-Point Trimmed 2.1-ppm/<inline-formula> <tex-math notation="LaTeX">$^\circ$</tex-math> </inline-formula>C and Single-Point Trimmed 8.7-ppm/<inline-formula> <tex-math notation="LaTeX">$^\circ$</tex-math> </inline-formula>C Stability From <inline-formula> <tex-math notation="LaTeX">$-$</tex-math> </inline-formula>40 <inline-formula> <tex-math notation="LaTeX">$^\circ$</tex-math> </inline-formula>C to 95 <inline-formula> <tex-math notation="LaTeX">$^\circ$</tex-math> </inline-formula>C

Kyu Sang Park, Amr Khashaba, Ahmed Abdelrahman, Yongxin Li, Tianyu Wang, Ruhao Xia, Nilanjan Pal, Pavan Kumar Hanumolu

Research output: Contribution to journal › Article › peer-review

Abstract

This article presents techniques to improve the frequency stability of <inline-formula> <tex-math notation="LaTeX">$RC$</tex-math> </inline-formula> oscillators by performing first-and second-order temperature compensation without needing resistors with opposite temperature coefficients (TCs). Using the proposed three-point digital trim, a prototype 100-MHz frequency-locked loop (FLL)-based <inline-formula> <tex-math notation="LaTeX">$RC$</tex-math> </inline-formula> oscillator fabricated in a 65-nm CMOS process achieves an inaccuracy of <inline-formula> <tex-math notation="LaTeX">$\pm$</tex-math> </inline-formula>140 ppm over <inline-formula> <tex-math notation="LaTeX">$-$</tex-math> </inline-formula>40 <inline-formula> <tex-math notation="LaTeX">$^\circ$</tex-math> </inline-formula>C to 95 <inline-formula> <tex-math notation="LaTeX">$^\circ$</tex-math> </inline-formula>C, 83-ppm/V voltage sensitivity, 1.3-ppm Allan deviation floor, and 1-<inline-formula> <tex-math notation="LaTeX">$\mu$</tex-math> </inline-formula>W/MHz power efficiency. When only a single-point trim is performed using a multiple linear regression model leveraging the strong correlation between three switched resistors, the frequency inaccuracy is <inline-formula> <tex-math notation="LaTeX">$\pm$</tex-math> </inline-formula>587 ppm.

Original language	English (US)
Pages (from-to)	1-11
Number of pages	11
Journal	IEEE Journal of Solid-State Circuits
DOIs	https://doi.org/10.1109/JSSC.2022.3227191
State	Accepted/In press - 2022

Keywords

<inline-formula xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> <tex-math notation="LaTeX">$RC$</tex-math> </inline-formula> oscillator
Delta–sigma modulator
Frequency locked loops
Oscillators
pulse density modulation
Resistance
Resistors
ring voltage-controlled oscillator (VCO)
Sensitivity
switched capacitor
switched resistor
Switches
temperature compensation
Temperature sensors

ASJC Scopus subject areas

Electrical and Electronic Engineering

Online availability

10.1109/JSSC.2022.3227191

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Dive into the research topics of 'A 1-<inline-formula> <tex-math notation="LaTeX">$\mu$</tex-math> </inline-formula>W/MHz <inline-formula> <tex-math notation="LaTeX">$RC$</tex-math> </inline-formula> Oscillator With Three-Point Trimmed 2.1-ppm/<inline-formula> <tex-math notation="LaTeX">$^\circ$</tex-math> </inline-formula>C and Single-Point Trimmed 8.7-ppm/<inline-formula> <tex-math notation="LaTeX">$^\circ$</tex-math> </inline-formula>C Stability From <inline-formula> <tex-math notation="LaTeX">$-$</tex-math> </inline-formula>40 <inline-formula> <tex-math notation="LaTeX">$^\circ$</tex-math> </inline-formula>C to 95 <inline-formula> <tex-math notation="LaTeX">$^\circ$</tex-math> </inline-formula>C'. Together they form a unique fingerprint.

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Park, K. S., Khashaba, A., Abdelrahman, A., Li, Y., Wang, T., Xia, R., Pal, N., & Hanumolu, P. K. (Accepted/In press). A 1-<inline-formula> <tex-math notation="LaTeX">$\mu$</tex-math> </inline-formula>W/MHz <inline-formula> <tex-math notation="LaTeX">$RC$</tex-math> </inline-formula> Oscillator With Three-Point Trimmed 2.1-ppm/<inline-formula> <tex-math notation="LaTeX">$^\circ$</tex-math> </inline-formula>C and Single-Point Trimmed 8.7-ppm/<inline-formula> <tex-math notation="LaTeX">$^\circ$</tex-math> </inline-formula>C Stability From <inline-formula> <tex-math notation="LaTeX">$-$</tex-math> </inline-formula>40 <inline-formula> <tex-math notation="LaTeX">$^\circ$</tex-math> </inline-formula>C to 95 <inline-formula> <tex-math notation="LaTeX">$^\circ$</tex-math> </inline-formula>C. IEEE Journal of Solid-State Circuits, 1-11. https://doi.org/10.1109/JSSC.2022.3227191

A 1-<inline-formula> <tex-math notation="LaTeX">$\mu$</tex-math> </inline-formula>W/MHz <inline-formula> <tex-math notation="LaTeX">$RC$</tex-math> </inline-formula> Oscillator With Three-Point Trimmed 2.1-ppm/<inline-formula> <tex-math notation="LaTeX">$^\circ$</tex-math> </inline-formula>C and Single-Point Trimmed 8.7-ppm/<inline-formula> <tex-math notation="LaTeX">$^\circ$</tex-math> </inline-formula>C Stability From <inline-formula> <tex-math notation="LaTeX">$-$</tex-math> </inline-formula>40 <inline-formula> <tex-math notation="LaTeX">$^\circ$</tex-math> </inline-formula>C to 95 <inline-formula> <tex-math notation="LaTeX">$^\circ$</tex-math> </inline-formula>C. / Park, Kyu Sang; Khashaba, Amr; Abdelrahman, Ahmed et al.
In: IEEE Journal of Solid-State Circuits, 2022, p. 1-11.

Research output: Contribution to journal › Article › peer-review

Park, KS, Khashaba, A, Abdelrahman, A, Li, Y, Wang, T, Xia, R, Pal, N & Hanumolu, PK 2022, 'A 1-<inline-formula> <tex-math notation="LaTeX">$\mu$</tex-math> </inline-formula>W/MHz <inline-formula> <tex-math notation="LaTeX">$RC$</tex-math> </inline-formula> Oscillator With Three-Point Trimmed 2.1-ppm/<inline-formula> <tex-math notation="LaTeX">$^\circ$</tex-math> </inline-formula>C and Single-Point Trimmed 8.7-ppm/<inline-formula> <tex-math notation="LaTeX">$^\circ$</tex-math> </inline-formula>C Stability From <inline-formula> <tex-math notation="LaTeX">$-$</tex-math> </inline-formula>40 <inline-formula> <tex-math notation="LaTeX">$^\circ$</tex-math> </inline-formula>C to 95 <inline-formula> <tex-math notation="LaTeX">$^\circ$</tex-math> </inline-formula>C', IEEE Journal of Solid-State Circuits, pp. 1-11. https://doi.org/10.1109/JSSC.2022.3227191

Park KS, Khashaba A, Abdelrahman A, Li Y, Wang T, Xia R et al. A 1-<inline-formula> <tex-math notation="LaTeX">$\mu$</tex-math> </inline-formula>W/MHz <inline-formula> <tex-math notation="LaTeX">$RC$</tex-math> </inline-formula> Oscillator With Three-Point Trimmed 2.1-ppm/<inline-formula> <tex-math notation="LaTeX">$^\circ$</tex-math> </inline-formula>C and Single-Point Trimmed 8.7-ppm/<inline-formula> <tex-math notation="LaTeX">$^\circ$</tex-math> </inline-formula>C Stability From <inline-formula> <tex-math notation="LaTeX">$-$</tex-math> </inline-formula>40 <inline-formula> <tex-math notation="LaTeX">$^\circ$</tex-math> </inline-formula>C to 95 <inline-formula> <tex-math notation="LaTeX">$^\circ$</tex-math> </inline-formula>C. IEEE Journal of Solid-State Circuits. 2022;1-11. doi: 10.1109/JSSC.2022.3227191

Park, Kyu Sang ; Khashaba, Amr ; Abdelrahman, Ahmed et al. / A 1-<inline-formula> <tex-math notation="LaTeX">$\mu$</tex-math> </inline-formula>W/MHz <inline-formula> <tex-math notation="LaTeX">$RC$</tex-math> </inline-formula> Oscillator With Three-Point Trimmed 2.1-ppm/<inline-formula> <tex-math notation="LaTeX">$^\circ$</tex-math> </inline-formula>C and Single-Point Trimmed 8.7-ppm/<inline-formula> <tex-math notation="LaTeX">$^\circ$</tex-math> </inline-formula>C Stability From <inline-formula> <tex-math notation="LaTeX">$-$</tex-math> </inline-formula>40 <inline-formula> <tex-math notation="LaTeX">$^\circ$</tex-math> </inline-formula>C to 95 <inline-formula> <tex-math notation="LaTeX">$^\circ$</tex-math> </inline-formula>C. In: IEEE Journal of Solid-State Circuits. 2022 ; pp. 1-11.

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title = "A 1- $\mu$ W/MHz $RC$ Oscillator With Three-Point Trimmed 2.1-ppm/ $^\circ$ C and Single-Point Trimmed 8.7-ppm/ $^\circ$ C Stability From $-$ 40 $^\circ$ C to 95 $^\circ$ C",

abstract = "This article presents techniques to improve the frequency stability of $RC$ oscillators by performing first-and second-order temperature compensation without needing resistors with opposite temperature coefficients (TCs). Using the proposed three-point digital trim, a prototype 100-MHz frequency-locked loop (FLL)-based $RC$ oscillator fabricated in a 65-nm CMOS process achieves an inaccuracy of $\pm$ 140 ppm over $-$ 40 $^\circ$ C to 95 $^\circ$ C, 83-ppm/V voltage sensitivity, 1.3-ppm Allan deviation floor, and 1- $\mu$ W/MHz power efficiency. When only a single-point trim is performed using a multiple linear regression model leveraging the strong correlation between three switched resistors, the frequency inaccuracy is $\pm$ 587 ppm.",

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author = "Park, {Kyu Sang} and Amr Khashaba and Ahmed Abdelrahman and Yongxin Li and Tianyu Wang and Ruhao Xia and Nilanjan Pal and Hanumolu, {Pavan Kumar}",

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AU - Park, Kyu Sang

AU - Khashaba, Amr

AU - Abdelrahman, Ahmed

AU - Li, Yongxin

AU - Wang, Tianyu

AU - Xia, Ruhao

AU - Pal, Nilanjan

AU - Hanumolu, Pavan Kumar

N1 - Publisher Copyright: Author

PY - 2022

Y1 - 2022

N2 - This article presents techniques to improve the frequency stability of $RC$ oscillators by performing first-and second-order temperature compensation without needing resistors with opposite temperature coefficients (TCs). Using the proposed three-point digital trim, a prototype 100-MHz frequency-locked loop (FLL)-based $RC$ oscillator fabricated in a 65-nm CMOS process achieves an inaccuracy of $\pm$ 140 ppm over $-$ 40 $^\circ$ C to 95 $^\circ$ C, 83-ppm/V voltage sensitivity, 1.3-ppm Allan deviation floor, and 1- $\mu$ W/MHz power efficiency. When only a single-point trim is performed using a multiple linear regression model leveraging the strong correlation between three switched resistors, the frequency inaccuracy is $\pm$ 587 ppm.

AB - This article presents techniques to improve the frequency stability of $RC$ oscillators by performing first-and second-order temperature compensation without needing resistors with opposite temperature coefficients (TCs). Using the proposed three-point digital trim, a prototype 100-MHz frequency-locked loop (FLL)-based $RC$ oscillator fabricated in a 65-nm CMOS process achieves an inaccuracy of $\pm$ 140 ppm over $-$ 40 $^\circ$ C to 95 $^\circ$ C, 83-ppm/V voltage sensitivity, 1.3-ppm Allan deviation floor, and 1- $\mu$ W/MHz power efficiency. When only a single-point trim is performed using a multiple linear regression model leveraging the strong correlation between three switched resistors, the frequency inaccuracy is $\pm$ 587 ppm.

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KW - ring voltage-controlled oscillator (VCO)

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KW - switched capacitor

KW - switched resistor

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