A Sub-1 ppm/°C Precision Bandgap Reference With Adjusted-Temperature-Curvature Compensation
| Autor: | Wei-Chih Chen, Shih-Han Jheng, Chang-Chi Lee, Hou-Ming Chen, Bo-Yi Lee |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Bandgap voltage reference business.industry 020208 electrical & electronic engineering Electrical engineering Line regulation 02 engineering and technology 020202 computer hardware & architecture law.invention Current mirror law 0202 electrical engineering electronic engineering information engineering Optoelectronics Silicon bandgap temperature sensor Electrical and Electronic Engineering Resistor business Temperature coefficient Voltage reference Voltage |
| Zdroj: | IEEE Transactions on Circuits and Systems I: Regular Papers. 64:1308-1317 |
| ISSN: | 1558-0806 1549-8328 |
| DOI: | 10.1109/tcsi.2017.2658186 |
| Popis: | This paper presents a precision bandgap reference with an innovative adjusted-temperature-curvature compensation circuit that obtains a good temperature coefficient (TC) over a wide temperature range. The proposed compensation circuit for enhancing the voltage accuracy of the bandgap reference combines an addition circuit, subtraction circuit, and current mirror to achieve an adjusted piecewise linear temperature current over an entire temperature range. The proposed bandgap reference was designed and fabricated using a standard Taiwan Semiconductor Manufacturing Company (TSMC) $0.18~\mu \text{m}$ 1P6M CMOS technology. Measurements on eight samples indicated that the proposed bandgap reference achieved a TC that varies from 1.67 to 10.55 ppm/° from −40 °C to 140 °C with a supply voltage of 1.8 V. The measured 547 mV reference voltage achieved a precision line regulation that is less than 0.08%/V for supply voltages between 1.3 and 1.8 V. The proposed circuit dissipated $28~\mu \text{A}$ with a supply voltage of 1.8 V, and an active area of 0.0094 mm2. The circuit was designed to operate on a low supply voltage down to 1.3 V. |
| Databáze: | OpenAIRE |
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