On‐chip dual‐phase charge‐transfer relaxation oscillator with comparator offset cancellation | Zendy

Ma Yanzhao | Zendy; Cui Kai | Zendy; Fang Song | Zendy; Fan Xiaoya | Zendy

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On‐chip dual‐phase charge‐transfer relaxation oscillator with comparator offset cancellation

Author(s) -

Ma Yanzhao,

Cui Kai,

Fang Song,

Fan Xiaoya

Publication year - 2018

Publication title -

electronics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.375

H-Index - 146

ISSN - 1350-911X

DOI - 10.1049/el.2017.3558

Subject(s) - comparator , offset (computer science) , relaxation oscillator , chip , dual (grammatical number) , materials science , charge (physics) , phase noise , electronic engineering , optoelectronics , electrical engineering , physics , voltage , voltage controlled oscillator , computer science , engineering , quantum mechanics , programming language , art , literature

An on‐chip 23 kHz dual‐phase relaxation oscillator is presented. Charge‐transfer and comparator offset cancellation techniques have been proposed to achieve low power and high temperature stability. The circuit has been designed with 0.18 μm CMOS process. The oscillator has achieved an ultra‐low power of 130 nW, a supply voltage sensitivity of 0.8%/V over 1.2–1.8 V, and a temperature coefficient of 30 ppm/°C over − 40 to 80 ∘ C .

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