Adaptive current generating transconductance circuit
AssigneeKabushiki Kaisha Toshiba
InventorChikashi Nakagawara
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Abstract
An adaptive current generating circuit having a reference voltage supply circuit for supplying a reference voltage subjected to a fluctuation of supply voltage, a reference current supply circuit for supplying reference current responsive to the reference voltage supplied by the reference voltage supply circuit, a control current supply circuit for supplying control current subjected to the fluctuation of the supply voltage and a bias supply circuit for supplying a bias to the reference current supply circuit corresponding to a difference between the reference current supplied by the reference current supply circuit and the control current supplied by the control current supply circuit.
Claims6
An adaptive current generating circuit comprising:
- a power supply for generating a power supply voltage;
- means for generating a reference voltage from said power supply voltage, said reference voltage generating means being subjected to a fluctuation of said power supply voltage;
- means for generating a reference current responsive to said reference voltage, said reference current generating means including a transconductance circuit;
- means for generating a control current from said power supply voltage, said control current being subjected to said fluctuation of the supply voltage;
- and
- means for generating a bias current corresponding to a difference between said reference current and said control current, and for supplying said bias current to said reference current generating means for controlling said reference current.
Dependencies are inferred from the claim text.