{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,25]],"date-time":"2026-02-25T17:49:23Z","timestamp":1772041763867,"version":"3.50.1"},"reference-count":33,"publisher":"World Scientific Pub Co Pte Ltd","issue":"06","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J CIRCUIT SYST COMP"],"published-print":{"date-parts":[[2026,3,30]]},"abstract":"<jats:p>In this paper, a novel programmable delay circuit with ultra-wide delay range and high precision is proposed for automatic control systems. This circuit is based on counting the specified number of periods of relaxation oscillator (ROSC) to generate the precise delay. To achieve the ultra-wide delay, wide-range ROSC and programmable digital control cell are adopted. Utilizing good frequency linearity of ROSC, delay with high precision is realized. A detailed theoretical analysis of delay error is derived. Compared with the conventional method, such as the timer of field programmable gate array (FPGA), this circuit features low power consumption, compact area and vibration immunity. Implemented in 0.18-[Formula: see text]m CMOS process, a prototype of the proposed delay circuit occupies an area of [Formula: see text]\u00a0[Formula: see text]mm and consumes 211[Formula: see text]\u00a0[Formula: see text]A current at 800[Formula: see text]K[Formula: see text]. With a supply voltage range of 2.25\u20135.5[Formula: see text]V, the measured delay range is from 2.0417[Formula: see text]\u00a0[Formula: see text]s to 31.7366[Formula: see text]s, and the normalized delay error variation with [Formula: see text] is 0.18%. In the delay intervals of 1.9\u201315.2[Formula: see text]\u00a0[Formula: see text]s, 15.2\u2013972.8[Formula: see text]\u00a0[Formula: see text]s and beyond 972.8[Formula: see text]\u00a0[Formula: see text]s, the measured values of normalized delay error without fixed error are less than 4.3%, 1% and 0.75%, respectively. Besides, the method to adjust the delay time is effortless, which is easy to use.<\/jats:p>","DOI":"10.1142\/s0218126625504651","type":"journal-article","created":{"date-parts":[[2025,8,22]],"date-time":"2025-08-22T10:29:20Z","timestamp":1755858560000},"source":"Crossref","is-referenced-by-count":1,"title":["A High-Precision Programmable Delay Circuit with Ultra-Wide Range (\u03bcs-Tens of Seconds)"],"prefix":"10.1142","volume":"35","author":[{"given":"Xiaohui","family":"Zhang","sequence":"first","affiliation":[{"name":"School of Communication and Electronic Engineering, East China Normal University, No. 500, Dongchuan Road, Shanghai, P.\u00a0R.\u00a0China"}]},{"given":"Xueyan","family":"Rong","sequence":"additional","affiliation":[{"name":"School of Communication and Electronic Engineering, East China Normal University, No. 500, Dongchuan Road, Shanghai, P.\u00a0R.\u00a0China"}]},{"given":"Xueping","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Communication and Electronic Engineering, East China Normal University, No. 500, Dongchuan Road, Shanghai, P.\u00a0R.\u00a0China"}]},{"given":"Zhipei","family":"Li","sequence":"additional","affiliation":[{"name":"School of Communication and Electronic Engineering, East China Normal University, No. 500, Dongchuan Road, Shanghai, P.\u00a0R.\u00a0China"}]},{"given":"Shengxi","family":"Diao","sequence":"additional","affiliation":[{"name":"School of Communication and Electronic Engineering, East China Normal University, No. 500, Dongchuan Road, Shanghai, P.\u00a0R.\u00a0China"}]}],"member":"219","published-online":{"date-parts":[[2025,9,20]]},"reference":[{"key":"S0218126625504651BIB001","doi-asserted-by":"publisher","DOI":"10.1109\/TBME.2009.2027607"},{"key":"S0218126625504651BIB002","first-page":"273","volume-title":"2012 Proc. 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