The AD8326 comprises a digitally controlled variable attenuator of 0 dB to 54 dB, that is preceded by a low noise, fixed-gain buffer and is followed by a low distortion high-power amplifier. The AD8326 accepts a differential or single-ended input signal. The output is designed to drive a 75 load, such as coaxial cable, although the AD8326 is capable of driving other loads.