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ADN2820S21 Fiches technique(PDF) 1 Page - Analog Devices |
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ADN2820S21 Fiches technique(HTML) 1 Page - Analog Devices |
1 / 12 page 10.7 Gbps, 3.3 V, Low Noise, TIA with Average Power Monitor ADN2820 Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.326.8703 © 2003 Analog Devices, Inc. All rights reserved. FEATURES Technology: high performance SiGe Bandwidth: 9 GHz Input noise current density: 1.0 µA Optical sensitivity: –19.3 dBm Differential transimpedance: 5000 V/A Power dissipation: 200 mW Input current overload: 2.8 mA p-p Linear input range: 0.15 mA p-p Output resistance: 50 Ω/side Output offset adjustment range: 240 mV Average input power monitor: 1 V/mA Die size: 0.87 mm × 1.06 mm APPLICATIONS 10.7 Gbps optical modules SONET/SDH OC-192/STM-64 and 10 GbE receivers, transceivers, and transponders PRODUCT DESCRIPTION The ADN2820 is a compact, high performance, 3.3 V power supply SiGe transimpedance amplifier (TIA) optimized for 10 Gbps Metro-Access and Ethernet systems. It is a single chip solution for detecting photodiode current with a differential output voltage. The ADN2820 features low input referred noise current and high output transimpedance gain, capable of driving a typical CDR or transceiver directly. A POWMON output is provided for input average power monitoring and alarm generation. Low nominal output offset enables dc output coupling to 3.3 V circuits. The OFFSET control input enables output slice level adjustment for asymmetric input signals. The ADN2820 operates with a 3.3 V power supply and is available in die form. FUNCTIONAL BLOCK DIAGRAM RF 3.3V CF CB RF = 500Ω VCC (1,2,3) IN (13)' GND (10, 11) GND (4,7) 0.85V 20mA AV = 20dB 50 Ω 50 Ω CLF CLF (9) POWMON (8) OUT (5) OUTB (6) OFFSET (14) h υ 03194-0-001 Figure 1. Functional Block Diagram/Typical Operating Circuit |
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