A 1-nA 4.5-nW 289-ppm/°C Current Reference Using Automatic Calibration

Autor:	Keith Edmund Kunz, Edgar Sanchez-Sinencio, Kyoohyun Noh, Sanghoon Lee, Stephen Heinrich-Barna
Rok vydání:	2020
Předmět:	Materials science business.industry Transistor Electrical engineering Temperature measurement law.invention CMOS law Hardware_INTEGRATEDCIRCUITS Calibration Trimming Timer Electrical and Electronic Engineering Current (fluid) business Sensitivity (electronics)
Zdroj:	IEEE Journal of Solid-State Circuits. 55:2498-2512
ISSN:	1558-173X 0018-9200
DOI:	10.1109/jssc.2020.2995038
Popis:	This article proposes an ultralow-power accurate current reference that generates 1-nA current. Since an automatic calibration circuit periodically calibrates the generated current of the current reference, the current reference is able to achieve ultralow power consumption and high accuracy simultaneously without employing a multiple temperature trimming. Prototype chips are fabricated in a 180-nm CMOS technology and are tested with a field programmable gate array (FPGA) board that controls the timing of the calibration. When the calibration is activated every 25 min, measurement results show that the current reference achieves a temperature coefficient of 289 ppm/°C and a line sensitivity of 1.4%/V with no help from a multiple temperature trimming. Estimated total power consumption is 4.5 nW at 23 °C, including the power consumption of a wake-up timer.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2cb59b2aa69e72c7c3a2fd8c994d1c1b https://doi.org/10.1109/jssc.2020.2995038 Zobrazit plný text záznamu