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1.25Gbps/2.5Gbps, +3V to +5.5V, Low-Noise Transimpedance Preamplifiers for LANs

Low 200nA (MAX3266) Input Referred Noise and 1mA Input Overload

Product Details

Key Features

Simplified Block Diagram

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Key Features

  • 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

Applications/Uses

  • 1Gbps to 2.5Gbps Optical Receivers
  • Fibre Channel
  • Gigabit Ethernet

Description

The 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.

Simplified Block Diagram

MAX3266, MAX3267: Typical Application Circuit MAX3266, MAX3267: Typical Application Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.