A highly linear fully differential low power CMOS line driver

A differential wide-band line driver for transformer-coupled cables is presented. Implementation in a 0.18/spl mu/m CMOS process, its -3dB bandwidth is 130MHz. The new line driver consumes 60mW of static power from a 2.5V supply. Its total power driving 75/spl Omega/ load is 130mW. 130mW from a 2.5V supply. The device drives a 75 /spl Omega/ load, while achieves a -51.0dB THD with a 2.5 V/sub p-p/ 5MHz signal on load. The THD is -48.9dB for a 2.5V/sub p-p/ 10MHz output signal. The area for the device is less than 0.1mm/sup 2/.