A twice curvature compensated voltage reference with double frequency compensation. (November 2020)

• Record Type: Journal Article
• Authors: Liu, Xifeng; Yang, Shiwei; Lu, Jianen
• Is Part Of: Microelectronics journal. Volume 105(2020)
• Publication Date: 2020-11
• Subjects: Voltage reference -- CMOS process -- Curvature compensation -- PSRR -- Frequency compensation; Microelectronics -- Periodicals; Microélectronique -- Périodiques; Microelectronics; Electronic journals; Journals - contents and abstracts; Periodicals; 621.3805
• DOI: 10.1016/j.mejo.2020.104921
• Languages: English
• ISSNs: 0959-8324

Abstract

Abstract: This paper presents a voltage reference (VR) with low temperature coefficient (TC) and full frequency high power supply rejection ratio (PSRR), the VR is fabricated by 0.18 μ m CMOS process. The proposed VR uses different methods to compensate for the temperature curvature of the output voltage twice. Two different methods are used to compensate PSRR in high-frequency band and low-frequency band respectively by analyzing the performance of PSRR in different frequency bands. Measurement data of samples show the TC of the proposed VR reaches 1.5 ppm/° C within temperature range from −40 °C to 120 °C, PSRR reaches −77.7 dB at 100 Hz and −47.7 dB at 1 MHz. The line sensitivity (LS) is 0.05 % /V.