Wide tuning range operational transconductance amplifiers

Details Wide tuning range operational transconductance amplifiers Wide tuning range operational transconductance amplifiers

1993-08-09

1995-02-21

Mottola, Steven

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330258, 330300, H03F 345

Patent

active

053920031

ABSTRACT:
A wide dynamic range Operational Transconductance Amplifier (OTA) (100) includes a differential voltage to current converter (206) for converting an input voltage to a current level. A pair of programmable folded cascodes (201) are coupled to the output of the converter (206) in order to render the amplifier (100) programmable. Current sources (222 and 226) are employed to provide output sourcing current. There is also included a common mode feedback (106) for maintaining the output signal substantially and equally centered between rails of the operating voltage (208).

REFERENCES:
patent: 4823092 (1989-04-01), Pennock
IEEE Journal of Solid State Circuits, vol. SC-3., No. 4, "A New Wide-Band Amplifier Technique", pp. 353-365, Dec. 1968.

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