CPC G05F 3/205 (2013.01) [H03F 3/16 (2013.01); H03K 17/223 (2013.01)] | 18 Claims |
1. An integrated circuit comprising:
a peripheral circuit; and
a first bias current generating circuit,
wherein the first bias current generating circuit includes:
a first amplifier configured to receive a reference voltage and a first voltage, and to amplify a difference between the first voltage and the reference voltage to output a first output voltage;
a first bias current generator configured to receive the first output voltage, and to output a first bias current in response to the first output voltage;
a variable resistor configured to receive the first bias current from the first bias current generator, and to output said first voltage in response to the first bias current and a calibration code;
a second bias current generator configured to receive the first output voltage, and to output a second bias current to the peripheral circuit in response to the first output voltage; and
a third bias current generator configured to receive the first output voltage, and to output a third bias current to an external device through a first pad in response to the first output voltage.
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