Two 3.9 ppm/°C curvature-corrected band gap voltage references with fast and low-power start ups. Issue 1 (2nd January 2017)

• Record Type: Journal Article
• Authors: Mollasalmani, J.; Ghaznavi-Ghoushchi, M. B.
• Is Part Of: International journal of electronics letters. Volume 5:Issue 1(2017)
• Page Start: 45
• Page End: 61
• Publication Date: 2017-01-02
• Subjects: Bandgap voltage reference (BGR) -- curvature-correction (CC) -- peaking current source -- CMOS -- low-power -- start-up circuit; Electronics -- Periodicals; Electronics; Periodicals; 621.38105
• DOI: 10.1080/00207217.2015.1082640
• Languages: English
• ISSNs: 2168-1732

Abstract

ABSTRACT: High-precision devices are among the important applications as well as demands on ultra-low temperature coefficient (TC) band gap voltage references (BGRs). This paper presents two ultra-low TC BGRs with fast and low-power start up. The proposed circuits used temperature from a compensation block, which consisted of one resistor and one PMOS transistor. The voltage references utilised the peak current source to prepare a temperature-independent reference output voltage. They produced an output voltage of 1.135 V, which exhibited a temperature coefficient of only 3.9 ppm/°C when temperature varied from −40°C to 50°C at a supply voltage of 1.8 V. The start-up current was limited to 51.91 nA for the proposed BGR2 and gained a low power feature. In addition, the start-up circuit had a total power consumption of only 0.0004% in the proposed BGR 2. The simulations were fully done with 0.18 µm CMOS technology.