A CMOS large-swing low-distortion three-stage class AB power amplifier | IEEE Journals & Magazine | IEEE Xplore

A CMOS large-swing low-distortion three-stage class AB power amplifier


Abstract:

A CMOS power amplifier with a class AB rail-to-rail output stage is presented. By using a three-stage amplifier with double Miller compensation, the harmonic distortion o...Show More

Abstract:

A CMOS power amplifier with a class AB rail-to-rail output stage is presented. By using a three-stage amplifier with double Miller compensation, the harmonic distortion of the output stage is suppressed by the internal feedback loops. This approach is thoroughly investigated, and it is shown that a three-stage amplifier has apparent advantages for DC gain, harmonic distortion, and power-supply rejection ratio (PSRR). A realized prototype for ISDN applications with a gain bandwidth (GBW) of 5 MHz and with -80-dB THD at 10 kHz for an output current of 20 mA in a load of 81 Omega is presented.<>
Published in: IEEE Journal of Solid-State Circuits ( Volume: 25, Issue: 1, February 1990)
Page(s): 265 - 273
Date of Publication: 28 February 1990

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