Bidirectional transconductance amplifier

Details Bidirectional transconductance amplifier Bidirectional transconductance amplifier

1987-01-28

1987-08-25

Sloyan, T. J.

Communications: electrical

Audible indication

Percussion-type sound producer

323315, 323316, 330257, 330260, 340347M, H03M 144

Patent

active

046896074

ABSTRACT:
An apparatus for converting an input voltage into a related output current, is disclosed and generally comprises: a resistance means in series with the voltage input; first and second double output current mirrors, wherein each output of the first double output mirror is connected to a corresponding output of the second double output mirror, and the inputs of the double output current mirrors are connected; and an operational amplifier with the inverting input connected to ground, the noninverting input connected to the resistance means, and the op amp output connected to the inputs of the first and second double output mirrors, wherein first outputs of the first and second double output mirrors are connected to the noninverting input of the operational amplifier, and the second outputs of the first and second double output mirrors are connected to the output current. The disclosed transconductance amplifier is advantageously used to transform an input voltage into an input current for a continuous time analog to digital converter which uses current steering techniques.

REFERENCES:
patent: 4513178 (1985-04-01), Hing et al.

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