Voltage detector circuit

Details Voltage detector circuit Voltage detector circuit

1997-04-30

1998-09-01

Tran, Toan

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

327 58, G11C 706

Patent

active

058015523

ABSTRACT:
A voltage detector circuit (10) for detecting voltage levels of a digital data bitstream has an input terminal (20) coupled to receive the digital data bitstream. A first peak detector circuit (40) coupled to the input terminal detects a positive peak voltage, and provides a first peak signal. A first differential amplifier is coupled to the input terminal and further coupled to receive the first peak signal, for providing a first difference signal. A second peak detector circuit is coupled to receive the first difference signal from the first differential amplifier, for detecting a peak voltage in the first difference signal and for providing a second peak signal. The first peak signal indicates the value of logical 1 levels in the bitstream, and the second peak signal indicates the relative value of logical 0 levels in the bitstream with respect to the logical 1 levels.

REFERENCES:
patent: 4219152 (1980-08-01), Couch et al.
patent: 4375037 (1983-02-01), Ikushima
patent: 4631737 (1986-12-01), Davis et al.
patent: 5003196 (1991-03-01), Kawaguchi
patent: 5159340 (1992-10-01), Smith

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