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A novel voltage-to-voltage logarithmic converter with high accuracy

Ghanaattian Jahromi, A ; Sharif University of Technology

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  1. Type of Document: Article
  2. Abstract:
  3. A novel BiCMOS voltage-to-voltage converter with logarithmic characteristics and very high accuracy is presented. The relationship between the emitter current and the base-emitter voltage in bipolar transistors is used to realize the logarithmic function. With 1.8 supply voltage, the total power consumption is less than 15.75 mW and a Log error of < -36dB is shown in the ADS simulations. Compared to the other method in the literature, very better accuracy in logarithm calculation is achieved. The proposed method can be used in arithmetical operation circuits like analog processors
  4. Keywords:
  5. Arithmetical circuits ; Logarithmic Amplifier ; Logarithmic converter
  6. Source: Przeglad Elektrotechniczny ; Volume 87, Issue 4 , 2011 , Pages 150-153 ; 00332097 (ISSN)
  7. URL: http://www.cyberjournals.com/Papers/Jan2011/14.pdf