A Coupled Sawtooth Oscillator Combining Low Jitter With High Control Linearity

Sander L.J. Gierkink; Ed (A.J.M.) van Tuijl

doi:10.1109/JSSC.2002.1004574

A Coupled Sawtooth Oscillator Combining Low Jitter With High Control Linearity

Sander L.J. Gierkink, Ed (A.J.M.) van Tuijl

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

73 Citations (Scopus)

Abstract

A new type of relaxation oscillator is presented that combines excellent control linearity with low timing jitter. By using an alternative for the Schmitt trigger, the jitter caused by threshold level noise can be significantly reduced compared to a conventional relaxation oscillator, under equal conditions of control linearity. Circuits realized in a 0.8-μm CMOS process show a typical measured distortion in the control characteristic of HD2 = -67 dB and HD3 = -90 dB (Δf = 500 KHz), without using any feedback linearization techniques. The measured phase noise is -102 dBc/Hz at 10-kHz offset at fosc = 1.5 MHz (65-ppm rms jitter) for a total supply current of 360 μA.

Original language	English
Pages (from-to)	702-710
Number of pages	9
Journal	IEEE journal of solid-state circuits
Volume	37
Issue number	6
DOIs	https://doi.org/10.1109/JSSC.2002.1004574
Publication status	Published - Jun 2002

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10.1109/JSSC.2002.1004574

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title = "A Coupled Sawtooth Oscillator Combining Low Jitter With High Control Linearity",

abstract = "A new type of relaxation oscillator is presented that combines excellent control linearity with low timing jitter. By using an alternative for the Schmitt trigger, the jitter caused by threshold level noise can be significantly reduced compared to a conventional relaxation oscillator, under equal conditions of control linearity. Circuits realized in a 0.8-μm CMOS process show a typical measured distortion in the control characteristic of HD2 = -67 dB and HD3 = -90 dB (Δf = 500 KHz), without using any feedback linearization techniques. The measured phase noise is -102 dBc/Hz at 10-kHz offset at fosc = 1.5 MHz (65-ppm rms jitter) for a total supply current of 360 μA.",

author = "Gierkink, {Sander L.J.} and {van Tuijl}, {Ed (A.J.M.)}",

year = "2002",

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T1 - A Coupled Sawtooth Oscillator Combining Low Jitter With High Control Linearity

AU - Gierkink, Sander L.J.

AU - van Tuijl, Ed (A.J.M.)

PY - 2002/6

Y1 - 2002/6

N2 - A new type of relaxation oscillator is presented that combines excellent control linearity with low timing jitter. By using an alternative for the Schmitt trigger, the jitter caused by threshold level noise can be significantly reduced compared to a conventional relaxation oscillator, under equal conditions of control linearity. Circuits realized in a 0.8-μm CMOS process show a typical measured distortion in the control characteristic of HD2 = -67 dB and HD3 = -90 dB (Δf = 500 KHz), without using any feedback linearization techniques. The measured phase noise is -102 dBc/Hz at 10-kHz offset at fosc = 1.5 MHz (65-ppm rms jitter) for a total supply current of 360 μA.

AB - A new type of relaxation oscillator is presented that combines excellent control linearity with low timing jitter. By using an alternative for the Schmitt trigger, the jitter caused by threshold level noise can be significantly reduced compared to a conventional relaxation oscillator, under equal conditions of control linearity. Circuits realized in a 0.8-μm CMOS process show a typical measured distortion in the control characteristic of HD2 = -67 dB and HD3 = -90 dB (Δf = 500 KHz), without using any feedback linearization techniques. The measured phase noise is -102 dBc/Hz at 10-kHz offset at fosc = 1.5 MHz (65-ppm rms jitter) for a total supply current of 360 μA.

U2 - 10.1109/JSSC.2002.1004574

DO - 10.1109/JSSC.2002.1004574

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JO - IEEE journal of solid-state circuits

JF - IEEE journal of solid-state circuits

SN - 0018-9200

IS - 6

ER -

A Coupled Sawtooth Oscillator Combining Low Jitter With High Control Linearity

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