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ADN2880 Arkusz danych(PDF) 1 Page - Analog Devices |
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ADN2880 Arkusz danych(HTML) 1 Page - Analog Devices |
1 / 12 page 3.2 Gbps, 3.3 V, Low Noise, Transimpedance Amplifier ADN2880 Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 © 2005 Analog Devices, Inc. All rights reserved. FEATURES Bandwidth: 2.5 GHz Optical sensitivity: −24.2 dBm1 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 × 1.2 mm APPLICATIONS 3.2 Gbps or below optical receivers SONET/GbE/FC optical receivers SFF-8472-compliant receivers PIN/APD-TIA receive optical subassemblies (ROSA) GENERAL DESCRIPTION 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. 1 Based on 1550 nm PIN, responsivity = 0.85 A/W, ER = 9 dB, BER < 10−10. FUNCTIONAL BLOCK DIAGRAM 1400 Ω 0.85V 20pF 50 Ω 200 Ω 50 Ω 3.3V FILTER IN VCCFILTER VCC GND GND CAP 5mA OUTB OUT RSSI Figure 1. |
Podobny numer części - ADN2880_15 |
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Podobny opis - ADN2880_15 |
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