Very high gain positive feedback CMOS transconductance amplifier

Details Very high gain positive feedback CMOS transconductance amplifier Very high gain positive feedback CMOS transconductance amplifier

1988-10-28

1990-01-30

Mottola, Steven

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330277, 330291, H03F 138, H03F 316

Patent

active

048976113

ABSTRACT:
This invention is for a transconductance amplifier. The amplifier has an amplifier input and an amplifier output with an amplifier output impedance. An input stage of the amplifier has a first transconductance. An intermediate state is coupled to the amplifier output through positive feedback. The intermediate stage has a second transconductance and an intermediate stage output having an intermediate output impedance. The gain of the amplifier is a function of the first transconductance times the second transconductance times the amplifier output impedance times the intermediate output impedance.

REFERENCES:
patent: 4320351 (1982-03-01), Brown, Jr. et al.
patent: 4661779 (1987-04-01), Okamoto
patent: 4701720 (1987-10-01), Monticelli
patent: 4730168 (1988-03-01), Senderowicz et al.

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