Device having internal voltage generating circuit
First Claim
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1. A device comprising:
- an amplifying circuit having first and second input terminals and an output terminal;
a ground terminal;
a variable resistance circuit including a plurality of resisters coupled in series, at least three resistors of the plurality of resistors having different resistance values; and
a resistance selecting circuit coupled in series to the variable resistance circuit between the output terminal and the ground terminal, the resistance selecting circuit including a first node coupled to the second input terminal, a plurality of resistors coupled in series to each other and a plurality of gate circuits each coupled between the first node and one end of a corresponding one of the resistors.
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Abstract
A device includes an amplifying circuit having first and second input terminals and an output terminal, a ground terminal, a variable resistance circuit, and a resistance selecting circuit coupled in series to the variable resistance circuit between the output terminal and the ground terminal. The resistance selecting circuit includes a first node coupled to the second input terminal, a plurality of resistors coupled in series to each other and a plurality of gate circuits each coupled between the first node and one end of a corresponding one of the resistors.
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Citations
15 Claims
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1. A device comprising:
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an amplifying circuit having first and second input terminals and an output terminal; a ground terminal; a variable resistance circuit including a plurality of resisters coupled in series, at least three resistors of the plurality of resistors having different resistance values; and a resistance selecting circuit coupled in series to the variable resistance circuit between the output terminal and the ground terminal, the resistance selecting circuit including a first node coupled to the second input terminal, a plurality of resistors coupled in series to each other and a plurality of gate circuits each coupled between the first node and one end of a corresponding one of the resistors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A device comprising:
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an amplifying circuit configured to be supplied with first and second voltages and to generate a third voltage responsive to a voltage comparison between the first and second voltages; a variable resistance circuit configured to be supplied with the third voltage and to supply a fourth voltage different from the third voltage; and a resistance selecting circuit configured to be supplied with the fourth voltage and to generate a plurality of internal voltages different from each other based on the fourth voltage, the resistance selecting circuit further configured to output a selected one of the internal voltages as the second voltage to the amplifying circuit. - View Dependent Claims (11, 12, 13, 14, 15)
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Specification