Journal of information and communication convergence engineering

The Korea Institute of Information and Commucation Engineering (한국정보통신학회)
권호 표지

Temperature Stable Current Source Using Simple Self-Bias Circuit

  • Choi, Jin-Ho (Department of Embedded IT, Pusan University)
  • Published : 2009.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, temperature stable current and voltage references using simple CMOS bias circuit are proposed. To obtain temperature stable characteristics of bias circuit a bandgap reference concept is used in a conventional circuit. The parasitic bipolar transistors or MOS transistors having different threshold voltage are required in a bandgap reference. Thereby the chip area increase or the extra CMOS process is required compared to a standard CMOS process. The proposed reference circuit can be integrated on a single chip by a standard CMOS process without the extra CMOS process. From the simulation results, the reference current variation is less than ${\pm}$0.44% over a temperature range from - $20^{\circ}C$ to $80^{\circ}C$. And the voltage variation is from - 0.02% to 0.1%.

Keywords

References

  1. Yueming Jiang and Edward K. F. Lee, "Design of Low- Voltage Bandgap Reference Using Transimpedance Amplifier," IEEE Trans. on Circuits and Systems-II Analog and Digital Signal Processing, vol. 47, no. 6, June 2000 https://doi.org/10.1109/82.847072
  2. Rahajandraible W, Auvergne D, Dufaza C et ai, "Very Low Power High Temperature Stability Bandgap Reference Voltage," Solid-State Circuits Conference 2002, Sept. 2002
  3. M. A. P. Pertijs, A. Niederkorn, et ai, "A CMOS Smart Temperature Sensor with a 30 Inaccuracy of ±O.5°C from -50 to 120," IEEE J. Solid-State Circuits, vol. 40, no. 2, Feb. 2005 https://doi.org/10.1109/JSSC.2005.858476
  4. Hironori Banba, Hitoshi Shiga and Akira Umezawa et ai, "A CMOS Bandgap Reference Circuit with Sub-1-V Operation," IEEE Journal of Solid-State Circuits, vol. 34, no. 5, May 1999 https://doi.org/10.1109/4.760378
  5. Seung-Hoon Lee and Yong JEE, "A Temperature and Supply-Voltage Insensitive CMOS Current Reference," IEICE Trans. Electron, vol. E32-C, no. 8, August 1999