The MAX3658AETA+T manufactured by Analog Devices is an ultra-low-noise transimpedance amplifier. This amplifier is designed to operate in an Ethernet application with a data rate up to 622 Mbps. It provides a high speed signal output with low distortion and low power consumption. The MAX3658AETA+T is a single-ended input amplifier with a built-in 4-6 dB gain block. It features exceptionally fast settling, a wide bandwidth, a low noise figure, and a low output glitch from fast input slew rate. The amplifier is also able to handle a wide variety of differential signal input levels and provide excellent signal to noise ratio. This device provides high performance for a variety of Ethernet applications, such as gigabit switches and bridges, routers, and fiber optics transmission systems.