Low-voltage low-power rail-to-rail constant gm transconductance amplifier

Ahmed M. Eltawil, Ahmed M. Soliman

Research output: Contribution to journalArticlepeer-review

Abstract

In this paper, a low-voltage low-power rail-to-rail constant gm transconductance amplifier (TA) is introduced. The supply voltages are set at (± 1.5 V). The circuit depends on selecting the maximum transconductance (gm) to achieve an almost constant gm over the entire common-mode (CM) range. The circuit is then used to realize a second-order 4 MHz lowpass filter consuming 530 μW, and a fifth-order 450 kHz lowpass elliptic filter consuming 2.3 mW. Both filters can be integrated on silicon without any external connections.
Original languageEnglish (US)
JournalAnalog Integrated Circuits and Signal Processing
Volume24
Issue number2
DOIs
StatePublished - Jul 1 2000
Externally publishedYes

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