Circuit for the detection of voltage thresholds

Details Circuit for the detection of voltage thresholds Circuit for the detection of voltage thresholds

1995-06-01

1998-04-07

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

327530, 327576, H03K 112

Patent

active

057368767

ABSTRACT:
A circuit to detect the crossing of at least one voltage threshold by an input voltage of an integrated circuit has two arms mounted in negative feedback configuration, each comprising a forward biased diode in series with a current generator. The current generator of an arm is controlled in voltage by the other arm. An inverter calibrated to detect a crossing of a given threshold is connected at input to the connection point between the diode and the generator of one of the arms.

REFERENCES:
patent: 3508081 (1970-04-01), Matsuda
patent: 3681623 (1972-08-01), Hoffman, Jr. et al.
patent: 3721893 (1973-03-01), Davis
patent: 3733498 (1973-05-01), Watson
patent: 4247791 (1981-01-01), Rovell
patent: 4358232 (1982-11-01), Simpson
patent: 4857769 (1989-08-01), Kotera et al.
patent: 4873458 (1989-10-01), Yoshida
patent: 4983857 (1991-01-01), Steele
patent: 5140183 (1992-08-01), Takenaka

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