OSI Optoelectronics, Inc. FCI-H125G-010L

FCI-H125G-010 is a low-noise, high-bandwidth photodetector and transimpedance amplifier designed for short-wavelength (850nm) high-speed fiber optic data communications. This hybrid device integrates a large 250μm diameter active area, high-sensitivity silicon photodetector. It also incorporates a high-gain transimpedance amplifier that generates differential output voltage for latching into post-amplifiers used in electro-optical receivers and transceivers, supporting Gigabit Ethernet and Fibre Channel applications up to 1.25Gbps over multimode fiber. The photodetector converts light into electrical signals, with output voltage increasing with optical input. This is achieved through a single +3.3V to +5V positive supply. These devices are available in a 4-pin TO-46 metal package with either a dual-sided anti-reflection coated window cap or an integrated lens cap. The 250μm diameter active area facilitates alignment during fiber or receptacle mating. Furthermore, the close proximity of the transimpedance amplifier to the photodetector reduces capacitance associated with long traces, enabling higher bandwidth and sensitivity.

• Silicon photodetector/low-noise transimpedance amplifier
• Low cost
• 250μm large active area
• High bandwidth/wide dynamic range
• Automatic gain control (AGC)
• Hermetic TO-46 package
• Single +3.3V to +5V supply
• Differential output

• High-speed optical communications
• Gigabit Ethernet
• Fibre Channel