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Zero-Order Curvature-Corrected Voltage References

  • Cosmin Radu Popa
Chapter

Abstract

Presenting the advantage of simplicity, zero-order curvature-corrected voltage reference circuits exhibit a relatively large value of the temperature coefficient. For bipolar technology, base–emitter voltage and Zener voltage represent the most common approach for designing CTAT voltage references; the difference between two base–emitter voltages being the usual method for implementing PTAT voltage references. The CMOS technology offers the possibility of implementing a CTAT voltage starting from the gate–source voltage or from the threshold voltage, while the PTAT voltage references exploit the difference of two gate–source voltages for subthreshold-operated MOS devices. The area of application for zero-order curvature-corrected voltage reference is related to the basic circuits that not require a very small value of the temperature coefficient, representing, also, the basis from developing first-order and superior-order curvature-corrected voltage references with a much better temperature behavior. Additionally, PTAT voltage references could be used as absolute temperature sensors in the hypothesis of a high linearity of their temperature dependence.

Keywords

Threshold Voltage Source Voltage Drain Current Reference Voltage Bipolar Transistor 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

  1. 1.
    Gray PR and Meyer RG (1993) Analysis and Design of Analog Integrated Circuits, 3rd Edition. Wiley, NYGoogle Scholar
  2. 2.
    Annema AJ (1998) Low-power Bandgap References Featuring DTMOSTs. The 24th European Solid-State Circuits Conference 116–119Google Scholar

Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  1. 1.Faculty of Electronics and Telecommunication Department of TelecommunicationUniversity Politehnica of BucharesBucharestRomania

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