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

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Статус продукта:Производство

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.


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


  • 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


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.


Наименование Тип контента Тип файлов
ADN2880: 3.2 Gbps, 3.3 V, Low Noise, Transimpedance Amplifier Data Sheet (Rev 0, 07/2005) (pdf, 349 kB) Технические описания PDF
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4X Fibre Channel Chipset and Reference Design Обзор HTML
SFP Chipset and Reference Design Simplify 4.25 Gbps Transceivers Обзор 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.
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RAQs index Rarely Asked Questions HTML
Словарь терминов Глоссарий HTML

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