The AD811 is a wideband current-feedback operational amplifier, optimized for broadcast quality video systems. The 3 dB bandwidth of 120 MHz at a gain of +2 and differential gain and phase of 0.01% and 0.01 (RL = 150 ) make the AD811 an excellent choice for all video systems. The AD811 is designed to meet a stringent 0.1 dB gain flatness specification to a bandwidth of 35 MHz (G = +2) in addition to the low differential gain and phase errors. This performance is achieved whether driving one or two back terminated 75 cables, with a low power supply current of 16.5 mA. Furthermore, the AD811 is specified over a power supply range of 4.5 V to 18 V.