Bias voltage and constant current supply circuit
Bias voltage supplying circuit
Temperature-compensated integrated circuit for uniform current generation
Bandgap voltage generator
Reference generator for generating a reference voltage and a reference current
Constant-current source circuit having a MOS transistor passing off-heat current
Bidirectional current mirrors and method for bidirectional current conduction Patent #: 5221889
ApplicationNo. 342008 filed on 11/16/1994
US Classes:323/313, To derive a voltage reference (e.g., band gap regulator)323/315Including parallel paths (e.g., current mirror)
ExaminersPrimary: Wong, Peter S.
Assistant: Berhane, Adolf
Attorney, Agent or Firm
Foreign Patent References
International ClassG05F 003/16
Foreign Application Priority Data1992-01-29 JP
AbstractA reference voltage generating circuit comprising a first and second transistors whose base-to-emitter voltages are different from each other and a constant current source to drive said respective transistors. Since the base-to-emitter voltages are different from each other, the circuit scarcely has a temperature characteristic with a reduced circuit scale. The first and second transistors preferably have different emitter areas. The current source is preferably a current mirror circuit composed of third and fourth transistors whose emitter areas are different from each other to drive the first and second transistors by different currents.