Adaptive biasing CMOS amplifiers
Two transconductance amplifiers are presented in which the concept of an input dependent bias current has been introduced. As a result, these amplifiers combine a very low standby power dissipation with a high driving capability. The first amplifier, suited for SC filters, is fairly small (0.075 mm/...
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Veröffentlicht in: | IEEE journal of solid-state circuits 1982-06, Vol.17 (3), p.522-528 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Two transconductance amplifiers are presented in which the concept of an input dependent bias current has been introduced. As a result, these amplifiers combine a very low standby power dissipation with a high driving capability. The first amplifier, suited for SC filters, is fairly small (0.075 mm/SUP 2/) and has a slew rate which is more than an order of magnitude better than micropower amplifiers presented earlier. The second amplifier can be used as a micropower buffer. Nearly the whole supply current is used to charge the load capacitor so that this amplifier has a high efficiency. |
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ISSN: | 0018-9200 1558-173X |
DOI: | 10.1109/JSSC.1982.1051769 |