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US 8,525,582 B2Granted
Current-source circuit
AssigneeFujitsu Limited
InventorSatoshi Matsubara
Life of this patent
Estimating the term…
Abstract
A current-source circuit includes a plurality of input-side transistors; a plurality of output-side transistors current-mirror-coupled to the plurality of input-side transistors; an output terminal from which an output current is output; and a switching control circuit to switch the plurality of input-side transistors and activate at least one of the plurality of input-side transistors sequentially.
Claims14
A current-source circuit comprising:
- a plurality of input-side transistors;
- a plurality of output-side transistors current-mirror-coupled to the plurality of input-side transistors;
- an output terminal from which an output current is output;
- and
- a switching control circuit to switch the plurality of input-side transistors and activate at least one of the plurality of input-side transistors sequentially;
- wherein time periods for which the plurality of input-side transistors are individually activated by the switching control circuit are substantially the same.
3 more elements
A current-source circuit comprising:
- a first current mirror circuit to receive an input current;
- and
- a second current mirror circuit, cascaded to the first current mirror circuit, to output an output current in accordance with the input current,
- wherein the second current mirror circuit includes:
- a plurality of first input-side transistors through which the output current based on the input current supplied by the first current mirror circuit flows;
- and
- a first switching control circuit to sequentially switch the plurality of first input-side transistors and activate at least one of the plurality of first input-side transistors.
4 more elements
Dependencies are inferred from the claim text.