An operational transconductance amplifier with matched outputs

Details An operational transconductance amplifier with matched outputs An operational transconductance amplifier with matched outputs

H - Electricity

03

F

H03F 3/00 (2006.01) H03F 3/347 (2006.01)

Patent

CA 2153253

A multi-output integrated circuit amplifier (500) consists of a first primary current mirror (510), and a plurality of secondary current mirrors (520). The first primary current mirror (510) is implemented in a single substrate and has a first primary input (511). The first primary current mirror (510) generates a plurality of first inverted primary current outputs in response to a first current signal coupled to the first primary input (511). The plurality of secondary current mirrors are implemented in the same single substrate and each has a secondary input coupled to a unique one of the plurality of primary current outputs of the first primary current mirror (510), each of said plurality of secondary current mirrors (520) having a gain, and each of said plurality of secondary current mirrors (520) generating an inverted secondary current output signal, the magnitude of which is determined substantially by the unique one of the plurality of primary current outputs coupled thereto and the gain thereof.

Un amplificateur (500) à circuit intégré à sorties multiples consiste en un premier miroir (510) de courant primaire et une pluralité de miroirs (520) de courant secondaires. Le premier miroir (510) de courant primaire est mis en oeuvre dans un seul substrat et il a une première entrée primaire (511). Le premier miroir (510) de courant primaire génère une pluralité de premières sorties de courant primaire inversé en réponse à un premier signal de courant couplé avec la première entrée primaire (511). La pluralité de miroirs de courant secondaire est mise en oeuvre dans le même substrat unique et chacun présente une entrée secondaire couplée à une sortie unique d'une pluralité de sorties de courants primaires du premier miroir (510) de courant primaire, chacun des miroirs de ladite pluralité de miroirs (520) de courant secondaire ayant un gain et chacun des miroirs de ladite pluralité de miroirs (520) de courant secondaire générant un signal de sortie de courant secondaire inversé, dont la magnitude est déterminée sensiblement par la sortie particulière de la pluralité de sorties de courant primaire couplée à celui-ci et par son gain.

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