Low power, low noise preamplifier with offset voltage cancellati

Details Low power, low noise preamplifier with offset voltage cancellati Low power, low noise preamplifier with offset voltage cancellati

1992-07-30

1994-04-19

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including atomic particle or radiant energy impinging on a...

330147, 330148, 330295, 250214A, 348241, H03F 308

Patent

active

053049500

ABSTRACT:
Apparatus and methods are disclosed for providing a low power, low noise preamplifier, especially useful with a Forward Looking Infrared (FLIR) sensor array. Utilizing a differential amplifier, where one half of the differential pair is shared among a plurality of channels, the power consumption of the amplifier is effectively reduced. Such an arrangement also eliminates the need for bulky coupling capacitors used in ac-coupled, single ended amplifiers. In addition, cross-talk between sensor outputs caused by detector ground impedance is reduced.

REFERENCES:
patent: 4263561 (1981-04-01), Weber
patent: 5107224 (1992-04-01), Meyer
1984 D.A.T.A.BOOK, vol. 29, Book 2, Mar. 1984, pp. 12, 38, 144.

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