Conference Paper

A 15uW, 12 ppm/°C curvature compensated bandgap in 0.85V supply


In this paper, a curvature-compensated bandgap reference circuit is presented which generates 0.538V from 0.85V supply voltage. The PTAT voltage generated in the bandgap core is added to the partial CTAT voltage to generate the sub-bandgap reference, reducing the CTAT current mirror mismatch. Furthermore, this architecture eases the opamp's requirements on offset and flicker noise significantly and doesn't require sophisticated techniques, such as chopping. A novel curvature compensation scheme is proposed and validated across PVT simulations and achieves 12 ppm/°C with a single point trim. The proposed bandgap consumes a power of 15 μW and occupies an area of 7315 μm 2 in TSMC 28nm.

Attached files


Nagulapalli, Rajasekhar
Palani, Rakesh Kumar
Agarwal, Sweta
Chatterjee, Shouri
Hayatleh, Khaled
Barker, Steve

Oxford Brookes departments

School of Engineering, Computing and Mathematics


Year of publication: 2021
Date of RADAR deposit: 2021-08-04

“© 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.”

Related resources

This RADAR resource is the Accepted Manuscript of A 15uW, 12 ppm/°C curvature compensated bandgap in 0.85V supply


  • Owner: Joseph Ripp
  • Collection: Outputs
  • Version: 1 (show all)
  • Status: Live
  • Views (since Sept 2022): 353