✦ LIBER ✦

Process and temperature insensitive CMOS oscillator using current sinker compensation

✍ Scribed by M. Kim; S. Jung; Y. Yang

Book ID: 102949637
Publisher: John Wiley and Sons
Year: 2011
Tongue: English
Weight: 636 KB
Volume: 54
Category: Article
ISSN: 0895-2477
DOI: 10.1002/mop.26493

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✦ Synopsis

Abstract

This article presents a simple complementary metal‐oxide‐semiconductor (CMOS) ring oscillator using a voltage‐controlled delay and RS‐latch, including a compensation circuit for the process and temperature variations.The compensation circuit, added to the original bias circuit, is a simple current sinker which is referenced through a current mirror circuit. The proposed oscillator was designed and implemented using a 0.13 μm CMOS process. The oscillator exhibited a significantly improved frequency variation of ±4.25% for a wide temperature range of from −40 to 80°C. Without the compensation circuit, the variation would have been ±13.39% from the center frequency of 2.33 MHz. The oscillator also showed a low sensitivity of 0.084% to process variation, according to a Monte‐Carlo simulation with 1000 iterations. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:160–163, 2012, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26493

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