Loop length compensation circuit
Voltage-temperature compensated threshold for hysteresis line receiver at TTL supply voltage
NPN band gap voltage reference
Band gap circuit
Bandgap reference circuit having higher-order temperature compensation
Curvature correction of bipolar bandgap references Patent #: 4808908
ApplicationNo. 427173 filed on 10/25/1989
US Classes:327/539, Using bandgap323/313, To derive a voltage reference (e.g., band gap regulator)323/314, With additional stage327/513With compensation for temperature fluctuations
ExaminersPrimary: Miller, Stanley D.
Assistant: Roseen, Richard
Attorney, Agent or Firm
International ClassesH03K 003/01
AbstractA voltage reference circuit employs a bandgap cell to establish a voltage reference, stabilized relative to the bandgap voltage of silicon, and a compensation circuit for compensating non-linear temperature dependence of the bandgap stabilized voltage reference. A two or three transistor type bandgap cell may be employed to establish the bandgap reference voltage along with a voltage divider network to adjust the output reference voltage relative to the bandgap voltage of silicon. The compensation circuit preferably employs a compensation resistor in the resistor divider network, and a switching circuit for switching current therethrough. This provides empirically determined adjustments to the output reference voltage by switching current through the compensation resistor in accordance with predetermined temperature thresholds.