MAX3825 - Maxim Integrated

MAX3825 2.5Gbps Quad Transimpedance Amplifier

The MAX3825 is a quad transimpedance amplifier (TIA) intended for 2.5Gbps system interconnect applications. Each of the four channels converts a small photodiode current to a measurable differential voltage with a transimpedance gain of 3.7kΩ. The circuit features 460nARMS of input-referred noise per channel corresponding to an optical input sensitivity of -.

Features

460nARMS of input-referred noise per channel corresponding to an optical input sensitivity of -22.3dBm (BER ≤ 1 × 10-14). The quad transimpedance amplifier has 20ps of deterministic jitter and a 2.4GHz small-signal bandwidth. The MAX3825 is optimized for use with a quad PIN photodetector array with a standard fiber pitch of 250µm. The MAX3825 operates from a single +3.3V supply over a 0°C to +85°C temperature range. With a +3.3V supply, each channel dissipates 93mW of power. A DC cancellation circuit on each channel provides a true differential output swing over a wide range of input currents..