| 摘要 |
A circuit for driving an external FET (12) comprises a differential amplification stage (4, 5, 8) supplied by a first and second operating potential (Vdd, Vss). An output load resistor (6) is included in a current flow path (3), the current flowing through therein is controlled by the voltage between two input terminals (9, 10) of the amplification stage (4, 5, 8) and is substantially independent of variations of the first or second operating potentials (Vdd, Vss). The output load resistor (6) is connected between the gate and source of the external FET 12. |
