ESD power clamp with adjustable trigger voltage for RF power amplifier integrated circuit

An ESD clamp with adjustable trigger voltage for RF power amplifiers in SiGe BiCMOS is presented. A voltage divider network determines the clamp trigger voltage. The design uses a latch for a robust clamp, with a fast response time to an ESD event. Experimental data show that the trigger voltage is adjustable by changing the value of a resistor.