CMOS preamplifier for electret microphones Conference Paper uri icon

abstract

  • In this paper a CMOS preamplifier for capacitive sources is presented. The 20 dB gain preamplifier achieves a dynamic range of 54 dB while the total harmonic distortion is below to -50 dB. Monte Carlo analyses have shown output random offset voltages below to 40 mvolts. The power consumption of the proposed preamplifier is 24 ╬╝watts. All this has been achieved due to the use of a novel resistor and linearized OTAs.

author list (cited authors)

  • Silva-Martinez, J., & Salcedo-Suner, J.

publication date

  • January 1995