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US 2014/0210522 A1Published application
Drive circuitry compensated for manufacturing and environmental variation
AssigneeMacronix International Co., Ltd.
InventorsShang-Chi Yang, Ken-Hui Chen, Su-Chueh Lo, Kuen-Long Chang, Chun-Hsiung Hung
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Abstract
Current drivers and biasing circuitry at least partly compensate for manufacturing variations and environmental variations such as supply voltage, temperature, and fabrication process.
Claims20
An integrated circuit, comprising:
- a first plurality of current drivers providing current outputs and having a first set of variations with supply voltage, temperature, and fabrication process;
- and the current outputs at least partly compensate each other for the first set of variations in supply voltage, temperature, and fabrication process.
An integrated circuit, comprising:
- a bias circuit including:
- a first voltage circuit output based on at least one constant voltage reference, the first voltage circuit output biasing at least one of a first plurality of current drivers,
- wherein the first plurality of current drivers providing current outputs and having a first set of variations with supply voltage, temperature, and fabrication process, and different ones of the current outputs at least partly compensate each other for the first set of variations of the current outputs.
A method, comprising:
- providing a first current driver having a first bias source output current;
- providing a second current driver having a second bias source output current;
- and
- combining the first and the second bias source output currents to provide a node with an output current independent of supply voltage, temperature, and fabrication process.
1 more element
A method, comprising:
- providing a first current driver powered by a first reference voltage and having a first bias source output current;
- providing a second current driver powered by a second reference voltage and having a second bias source output current;
- and
- providing a combined output current from combining the first and the second output currents to a node,
- wherein the first and the second reference voltages are different non-zero voltages.
2 more elements
Dependencies are inferred from the claim text.