MAX3260
Description
The MAX3260 high-speed transimpedance amplifier is ideally suited for Fibre Channel and SDH/SONET applications. An extended dynamic range makes the MAX3260 useful in optical receiver systems with as much as 25d B of input signal range. A DC-restore feedback network prevents amplifier saturation in all Fibre Channel applications by allowing input currents as high as 900µA to be amplified linearly. To reduce noise, the restore function is disabled at low input levels, allowing detection of signals as small as 2.4µA with a signal-tonoise ratio of 10. The filter output (FILTER) of the MAX3260 provides a convenient voltage source for a photodiode, especially when the circuit will be placed into a TO-style header with the photodiode. The filter output is connected to VCC through a 1kΩ on-chip resistor. In bination with a bypass capacitor, the filter function significantly reduces the amount of noise present at the cathode of the photodiode. The MAX3260 operates from a single +5V...
