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+3.3V, 2.5Gbps, Quad, Transimpedance Amplifier for System Interconnects

Quad 2.5Gbps Low-Power 2R Receiver Chipset

Product Details

Key Features

Simplified Block Diagram

Technical Docs

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Sampling:
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Key Features

  • Single +3.3V Supply
  • 93mW per channel Power Dissipation
  • 460nARMS Input-Referred Noise
  • 20ps Deterministic Jitter
  • 2.4GHz Small-Signal Bandwidth
  • No External Compensation
  • 40dB Power-Supply Rejection Ratio
  • Compact Die with 250µm Channel Pitch
  • 100Ω Differential Output Impedance

Applications/Uses

  • ATM Switch Networks
  • Backplane and Interconnect Applications
  • Dense Digital Cross-Connects
  • High-Speed Parallel Optical Links
  • SDH/SONET
  • System Interconnects

Description

The MAX3825 is a quad transimpedance amplifier (TIA) intended for 2.5Gbps system interconnect applications. Each of the four channels converts a small photodiode current to a measurable differential voltage with a transimpedance gain of 3.7kohm. The circuit features 460nARMS of input-referred noise per channel corresponding to an optical input sensitivity of -22.3dBm (BER < 1 x 10-14). The quad transimpedance amplifier has 20ps of deterministic jitter and a 2.4GHz small-signal bandwidth. The MAX3825 is optimized for use with a quad PIN photodetector array with a standard fiber pitch of 250µm.

The MAX3825 operates from a single +3.3V supply over a 0°C to +85°C temperature range. With a +3.3V supply, each channel dissipates 93mW of power. A DC cancellation circuit on each channel provides a true differential output swing over a wide range of input currents.

Each channel has an independent supply and ground to allow all or any combination of channels to be connected. This device is available in dice only.

Simplified Block Diagram

MAX3825: Typical Application Circuit MAX3825: 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.