Amplifier circuit

Details Amplifier circuit Amplifier circuit

1998-09-10

2000-07-18

Mottola, Steven J.

Amplifiers

Sum and difference amplifiers

330 84, H03F 345, H03F 368

Patent

active

060912944

ABSTRACT:
An amplifier circuit for amplifying an input signal and outputting the amplified signal includes a first amplifier for outputting from a first output terminal a current proportional to a difference voltage between voltages at a first input terminal and a second input terminal, and a second amplifier for outputting from a second output terminal a current proportional to a difference voltage between voltages at the first input terminal and the second input terminal and for feeding back a current outputted from the second output terminal to the second input terminal, so that the amplifier circuit is operable at a supply voltage of 3 V.

REFERENCES:
patent: 3566298 (1971-02-01), Stevens
patent: 4929909 (1990-05-01), Gilbert
patent: 5027081 (1991-06-01), Baum
patent: 5510751 (1996-04-01), Nauta
EDN Electrical Design News, vol. 37, No. 4, pp. 133-136, Feb. 17, 1992, XP000292859, "Op-amp Distortion Measurement Bypass Test-Equipment Limits Designer's Guide To Measuring Op-amp Distortion Part 1".
IEEE Journal of Solid-State Circuits, vol. 27, No. 12, pp. 1723-1729, Dec. 1, 1992, XP000329021, "A Highly Efficient CMOS Line Driver with 80-dB Linearity for ISDN U-Interface Applications".

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