4.4 A 2.1-to-3.7ppm/°C Bandgap Voltage Reference with a Current-Domain TC Compensation and ±0.06% Inaccuracy from −40°C to 125°C in 130nm CMOS
Abstract
This paper presents a CMOS bandgap reference (BGR) with a current-domain high-order TC compensation by using a capacitively-biased-diode-based super-PTAT current bias. It achieves a TC of 2.1 to 7.1ppm/°C from −40 to 125°C after a batch trim, which is on par with state-of-the-art BGRs with a 1-point trim. After a 2-point trim, it achieves a TC that ranges from 2.1 to 3.7ppm/°C and an inaccuracy of$\pm 0.06 \%(3 \sigma)$from −40 to 125°C. Its simple architecture also results in$2 \times$higher energy efficiency.
Fields of Study & Subjects
Analog and Mixed-Signal Circuit Design
Low-power high-performance VLSI design
Advancements in PLL and VCO Technologies
Publication details
- Journal / source
- 2026 IEEE International Solid-State Circuits Conference (ISSCC)
- Publisher
- IEEE
- Pages
- 82–84
- Publication date
- 15 February 2026