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ADN2880:  3.2 Gbps 3.3V Low Noise TIA for Small Form Factors

Product Details


The ADN2880 is a 3.3 V, high gain SiGe transimpedance amplifier (TIA). The TIA converts the small signal current of a photo detector into differential voltage output. The ADN2880 features a 315 nA typical input-referred noise, enabling an optical sensitivity of −24.2 dBm (0.85 A/W PIN). With a bandwidth of 2.5 GHz, the ADN2880 allows a data rate operation up to 3.2 Gbps. Typical power dissipation is approximately 70 mW.

To facilitate the assembly in small form factor packages, such as TO-46 headers, the ADN2880 provides an on-chip RC filter (200 Ω, 20 pF) and features a 20 kHz low frequency cutoff without using an external capacitor. An on-chip RSSI circuit, which generates a voltage proportional to the average photo-diode current, is also available for power monitoring and assembly alignment.

The ADN2880 is available in die form. With a chip area of 1.2 mm × 0.7 mm, the TIA layout is specifically optimized for TO-Can-based packages.

Applications

  • 3.2 Gbps or below optical receivers
  • SONET/GbE/FC optical receivers
  • SFF-8472-compliant receivers
  • PIN/APD-TIA receive optical subassemblies (ROSA)

FEATURES and BENEFITS

  • Bandwidth: 2.5 GHz
  • Optical sensitivity: −24.2 dBm
  • Differential transimpedance: 4400 V/A
  • Power dissipation: 70 mW
  • Differential output swing: 260 mV p-p
  • Input overload current: 4.3 mA p-p
  • On-chip RSSI function
  • Low frequency cutoff: 20 kHz
  • On-chip PD filter: RF = 200 Ω, CF= 20 pF
  • Die size: 0.7 mm x 1.2 mm

Functional Block Diagram for ADN2880

OF NOTE ...

For an opportunity to receive a copy of the Applications Note: Detailed Applications and Design Information for ADI's SFP Reference Design, please contact the Fiber Optic IC Development Group.

Documentation

Title Content Type File Type
ADN2880: 3.2 Gbps, 3.3 V, Low Noise, Transimpedance Amplifier Data Sheet (Rev 0, 07/2005) (pdf, 349 kB) Data Sheets PDF
Transceiver targets 4x Fibre Channel Applications
New optical transceiver chipset and reference design from Analog Devices supports both gigabit Ethernet and Fibre Channel data rates up to 4.25 Gbps (eeProductCenter, 1/20/05)
Product Reviews HTML
SFP Chipset and Reference Design Simplify 4.25 Gbps Transceivers Overview HTML
Optical and High Speed Networking  (pdf, 2236 kB)
Analog Devices’ optical and high speed networking ICs solve a depth and breadth of challenges faced by today’s designers of datacom and telecom systems, optical modules, and subsystems. Analog Devices products address a wide range of networking applications from O/E/O conversion, clock recovery, and backplane transmission to monitoring and control of optical power, power management, and clock generation and distribution.
Overview PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Evaluation Kits & Symbols & Footprints

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

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Price, packaging, availability

ADN2880 Model Options
Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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