Low-Noise Transimpedance Preamplifiers
MAX3266/MAX3267
19-4796; Rev 1; 6/00
EVAALVUAAILTAIOBNLEKIT
1.25Gbps/2.5Gbps, +3V to +5.5V, Low-Noise Transimpedance Pr...
Description
MAX3266/MAX3267
19-4796; Rev 1; 6/00
EVAALVUAAILTAIOBNLEKIT
1.25Gbps/2.5Gbps, +3V to +5.5V, Low-Noise Transimpedance Preamplifiers for LANs
General Description
The MAX3266 is a transimpedance preamplifier for 1.25Gbps local area network (LAN) fiber optic receivers. The circuit features 200nA input-referred noise, 920MHz bandwidth, and 1mA input overload.
The MAX3267 provides a pin-for-pin compatible solution for communications up to 2.5Gbps. It features 500nA input-referred noise, 1.9GHz bandwidth, and 1mA input overload.
Both devices operate from a +3.0V to +5.5V single supply and require no compensation capacitor. They also include a space-saving filter connection that provides positive bias for the photodiode through a 1.5kΩ resistor to VCC. These features allow easy assembly into a TO-46 or TO-56 header with a photodiode.
The 1.25Gbps MAX3266 has a typical optical dynamic range of -24dBm to 0dBm in a shortwave (850nm) configuration or -27dBm to -3dBm in a longwave (1300nm) conf...
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