Single supply high PSRR class AB amplifier

Single supply high PSRR class AB amplifier

A simple two-stage Miller compensated class AB amplifier is presented which uses single-ended class AB control for accurate setting of the output stage quiescent and minimum currents. This control technique also inherently boosts the amplifier midband positive power supply rejection ratio (PSRR^sub...

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Veröffentlicht in:Electronics letters 2008-01, Vol.44 (2), p.1-1
Hauptverfasser: Loikkanen, M, Keränen, P, Kostamovaara, J
Format: Artikel
Sprache:eng
Schlagworte:
Amplifiers
Bandwidth
Noise levels
Power supplies
Rejection
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Beschreibung
Zusammenfassung:A simple two-stage Miller compensated class AB amplifier is presented which uses single-ended class AB control for accurate setting of the output stage quiescent and minimum currents. This control technique also inherently boosts the amplifier midband positive power supply rejection ratio (PSRR^sub dd^). Measurements show a more than 20 dB improvement in the midband PSRR^sub dd^ when the amplifier is compared to popular symmetrical class AB amplifiers with similar bandwidth.
ISSN:0013-5194
1350-911X