Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By amplitude
Patent
1992-10-22
1995-08-29
Wolfe, Willis R.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By amplitude
327 68, H03K 524
Patent
active
054463963
ABSTRACT:
An improved comparator circuit is provided for comparing two input signals and producing a resulting digital output. The comparator circuit uses a single cascode devices and current mirror circuit parallel coupled to two differential amplifier stages. One differential amplifier stage receives differential input signals and the other differential amplifier stage receives a variable reference voltage and a feedback voltage from the output of the comparator. The reference voltage is varied according to user requirements. The reference voltage can be varied to any voltage within the range of the input signals placed on the differential amplifier stage. Hysteresis differential voltage on the input differential amplifier stage can be accurately controlled by varying the biasing current and reference voltage placed on the hysteresis differential amplifier stage.
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Advanced Micro Devices , Inc.
Wolfe Willis R.
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