US Patent 7894173 Enhancing bandwidth of ESD network using transformers

An integrated circuit device includes a first pad and a second pad; electrostatic discharging (ESD) devices coupling the first pad and the second pad to a discharging path; a transformer including a first end, a second end, a third end and a fourth end, wherein the first end and the second end are coupled to the first pad and the second pad, respectively; and a transceiver circuit coupled to the first end and the second end of the transformer.