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 (PSRRdd)....

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Veröffentlicht in:	Electronics letters 2008-01, Vol.44 (2), p.70-71, Article 70
Hauptverfasser:	LOIKKANEN, M, KERÄNEN, P, KOSTAMOVAARA, J
Format:	Artikel
Sprache:	eng
Schlagworte:	Amplifiers Applied sciences Circuit properties Electric, optical and optoelectronic circuits Electronic circuits Electronics Exact sciences and technology
Online-Zugang:	Volltext
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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 (PSRRdd). Measurements show a more than 20dB improvement in the midband PSRRdd when the amplifier is compared to popular symmetrical class AB amplifiers with similar bandwidth.
ISSN:	0013-5194 1350-911X
DOI:	10.1049/el:20082922