1.25Gbps/2.5Gbps, +3V to +5.5V, Low-Noise Transimpedance Preamplifiers for LANs
Low 200nA (MAX3266) Input Referred Noise and 1mA Input Overload
DescriptionThe MAX3266 is a transimpedance preamplifier for 1.25Gbps 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 single +3.0V to +5.5V 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) configuration. The 2.5Gbps MAX3267 has a typical optical dynamic range of -21dBm to 0dBm in a shortwave configuration or -24dBm to -3dBm in a longwave configuration.
- 200nA Input-Referred Noise (MAX3266)
- 500nA Input-Referred Noise (MAX3267)
- 920MHz Bandwidth (MAX3266)
- 1900MHz Bandwidth (MAX3267)
- 1mA Input Overload
- Single +3.0V to +5.5V Supply Voltage
- 1Gbps to 2.5Gbps Optical Receivers
- Fibre Channel
- Gigabit Ethernet
Technical DocumentsApp Note 1938 HFAN-03.0.2: Optical Receiver Performance Evaluation
App Note 630 HFAN-08.0.1: Understanding Bonding Coordinates and Physical Die Size
|Device||Fab Process||Technology||Sample size||Rejects||FIT at 25°C||FIT at 55°C||Material Composition|