A single-trim CMOS bandgap reference with a 3σ inaccuracy of ±0.15% from −40°C to 125°C

This paper describes a CMOS bandgap reference with an inaccuracy of ±0.15% (3σ) from −40°C to 125°C. This level of performance, previously only achieved by trimming at two or more temperatures [1, 2], was obtained by using chopping and curvature correction to minimize non-PTAT (proportional-to-absolute-temperature) errors, and canceling residual PTAT errors with a single room-temperature trim.

[1]  V. Ivanov,et al.  A CMOS bandgap voltage reference with absolute value and temperature drift trims , 2005, 2005 IEEE International Symposium on Circuits and Systems.

[2]  R. Burt,et al.  A Micropower Chopper-Stabilized Operational Amplifier Using a SC Notch Filter With Synchronous Integration Inside the Continuous-Time Signal Path , 2006, IEEE Journal of Solid-State Circuits.

[3]  J.H. Huijsing,et al.  A CMOS chopper opamp with integrated low-pass filter , 1997, Proceedings of the 23rd European Solid-State Circuits Conference.

[4]  K. E. Kuijk,et al.  A precision reference voltage source , 1973 .

[5]  D. Varadarajan,et al.  A method for reducing the effects of random mismatches in CMOS bandgap references , 2002, 2002 IEEE International Solid-State Circuits Conference. Digest of Technical Papers (Cat. No.02CH37315).

[6]  Gerard C. M. Meijer,et al.  The temperature characteristics of bipolar transistors fabricated in CMOS technology , 2000 .

[7]  Gerard C.M. Meijer,et al.  A New Curvature-Corrected Bandgap Reference , 1981, ESSCIRC '81: 7th European Solid State Circuits Conference.

[8]  P.R. Gray,et al.  A precision curvature-compensated CMOS bandgap reference , 1983, IEEE Journal of Solid-State Circuits.

[9]  C. Fiocchi,et al.  Curvature compensated BiCMOS bandgap with 1 V supply voltage , 2001, Proceedings of the 26th European Solid-State Circuits Conference.

[10]  Gabor C. Temes,et al.  Circuit techniques for reducing the effects of op-amp imperfections: autozeroing, correlated double sampling, and chopper stabilization , 1996, Proc. IEEE.

[11]  Gerard C. M. Meijer.  Thermal sensors based on transistors , 1986 .

[12]  T. R. Viswanathan,et al.  A 1.4 V Supply CMOS Fractional Bandgap Reference , 2006, IEEE Journal of Solid-State Circuits.

[13]  Kofi A. A. Makinwa,et al.  A CMOS smart temperature sensor with a 3σ inaccuracy of ±0.1°C from -55°C to 125°C , 2005, IEEE J. Solid State Circuits.

[14]  R. Burt,et al.  A Micropower Chopper-Stabilized Operational Amplifier using a SC Notch Filter with Synchronous Integration inside the ContinuousTime Signal Path , 2006, 2006 IEEE International Solid State Circuits Conference - Digest of Technical Papers.

[15]  Yueming Jiang,et al.  A low voltage low 1/f noise CMOS bandgap reference , 2005, 2005 IEEE International Symposium on Circuits and Systems.

[16]  A. Bakker,et al.  A CMOS nested-chopper instrumentation amplifier with 100-nV offset , 2000, IEEE Journal of Solid-State Circuits.