Modified current mirror circuit for BiCMOS application

摘要

ESD (Electrostatic Discharge) robust current mirror circuits incorporate circuitry for decoupling the gate when the chip is unpowered. Additional protection is provided by a second element which provides de-biasing to prevent Vgs from being established. A third element can be added between the gate and the ground potential on the current mirror gate node to prevent the gate of the current mirror from rising too high and allows the current to be discharged through the element instead of the current mirror.