Automatic threshold control circuit and signal amplifying circui

Details Automatic threshold control circuit and signal amplifying circui Automatic threshold control circuit and signal amplifying circui

1997-08-18

1999-07-13

Mullins, James B.

Amplifiers

With semiconductor amplifying device

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

330 59, 359189, 250214A, 327 62, 327 70, 327 90, H03F 1700

Patent

active

059232196

ABSTRACT:
An automatic threshold control circuit includes a bottom detection circuit, a relative peak detection circuit, and a voltage divider circuit. The bottom detection circuit detects an absolute minimum level of an input signal, and the relative peak detection circuit detects, in accordance with the input signal, a maximum level relative to the minimum level detected by the absolute bottom detection circuit. Further, the voltage divider circuit generates a threshold level by dividing the absolute minimum level and the relative maximum level in a predetermined ratio. Using this configuration, a signal amplifying circuit can be constructed that is capable of accurately reproducing digital signals at all times regardless of variations in the amplitude or the DC level of the input signal.

REFERENCES:
patent: 5475342 (1995-12-01), Nakamura et al.

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