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US 2019/0296725 A1Published application
Skew detection circuit and input circuit using the same
AssigneeSK hynix Inc.
InventorYeonsu JANG
Life of this patent
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Abstract
A skew detection circuit may include a bias circuit configured to generate a first bias signal and a second bias signal, a reference voltage circuit configured to generate a third bias signal and a fourth bias signal, and a detection circuit configured to generate, using the first to fourth bias signals, a plurality of skew detection signals. The skew detection signals may correspond to effects of one or more of process variations, voltage variations, and temperature variations.
Claims9
An input circuit comprising:
- a skew detection circuit configured to operate a basic logic element forming a semiconductor device in each of a saturation region and a subthreshold region, and detect characteristic variation of the basic logic element depending on variation in process, operating voltage, or temperature, and generate a plurality of skew detection signals;
- an operation circuit configured to generate a source control signal and a sink control signal by combining the plurality of skew detection signals;
- and
- a buffer configured to vary an amount of a source current in response to the source control signal and vary an amount of a sink current in response to the sink control signal.
1 more element
Dependencies are inferred from the claim text.