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US09899993B2 Reconfigurable delay circuit, delay monitor circuit using said delay circuit, variation compensation circuit, variation measurement method, and variation compensation method 有权

Reconfigurable delay circuit, delay monitor circuit using said delay circuit, variation compensation circuit, variation measurement method, and variation compensation method
摘要：
A delay circuit contains a first inversion circuit including a pull-up circuit and a pull-down circuit, and a second inversion circuit including a pull-up circuit and a pull-down circuit. The delay circuit further contains a first pass transistor connected in series to the pull-up circuit in the first inversion circuit between a power supply potential and an output node, a second pass transistor connected in series to the pull-down circuit in the first inversion circuit between a ground potential and the output node, a third pass transistor connected in series between the input node and the pull-up circuit in the second inversion circuit, and a fourth pass transistor connected in series between the input node and the pull-down circuit in the second inversion circuit. A delay characteristic of the delay circuit is changed by a combination of control signals applied to gates of the pass transistors.
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