PDF MAX3270 Data sheet ( Hoja de datos )

Número de pieza	MAX3270
Descripción	155Mbps/622Mbps Clock Recovery and Data Retiming IC
Fabricantes	Maxim Integrated
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No Preview Available ! 19-0379; Rev 1; 11/99 155Mbps/622Mbps Clock Recovery and Data Retiming IC with Fully Integrated Phase/Frequency Detector _______________General Description The MAX3270 is a complete Clock Recovery and Data Retiming IC for 155Mbps and 622Mbps SDH/SONET and ATM applications. The MAX3270 meets Bellcore and CCITT jitter tolerance specifications ensuring error- free data recovery. Recovered clock and data are phase aligned using a fully integrated phase-locked loop (PLL). An output frequency monitor (FM) is includ- ed to detect loss of PLL acquisition or a loss of input data. The MAX3270 has differential ECL input and output interfaces, so it is less susceptible to noise in a high- frequency environment. The fully integrated PLL includes an integrated phase-frequency detector that eliminates the need for external references. ________________________Applications 155Mbps (STM-1/OC-3)/622Mbps (STM-4/ OC-12) SDH/SONET Transmission Systems 155Mbps/622Mbps ATM/SONET Access Nodes Add/Drop Multiplexers Cross-Connects ____________________________Features o Supports Both 155Mbps and 622Mbps Clock Recovery and Data Retiming o Fully Integrated Phase/Frequency Detector o Capable of Switching to an External Clock o Differential 100K ECL Data and Clock I/Os o Output Monitor Provides Lock Detection o No External Reference Clock Required PART MAX3270EMH Ordering Information TEMP. RANGE -40°C to +85°C PIN-PACKAGE 44 MQFP Pin Configuration appears at end of data sheet. ____________________________________________________Typical Operating Circuit -2V +5V 11 39 17 19 38 7 16 15 5 24 27 29 32 50Ω 50Ω 50Ω 50Ω 3 SDIP 50Ω -2V 50Ω -2V +5V 4 SDIN 41 PHADJ 42 VR 13 EXCS 18 CRS 20 RST 14 EXC MAX3270 RDOP RDON RCOP RCON CRP 26 25 31 30 28 9 FILP FILG 8 FILN 10 FM 6 2.2µF 2.2µF 20Ω 20Ω -4.5V 450Ω 50Ω 2 12 1 35 36 22 21 34 -2V EXCS AND CRS ARE CONNECTED FOR 622Mbps OPERATION. -4.5V -4.5V -4.5V ANALOG SUPPLY -4.5V DIGITAL SUPPLY BYPASS SUPPLIES WITH 0.1µF AND 0.01µF CAPACITORS. DECOUPLE AVEE1, AVEE2, AND GVEE SUPPLY PINS. ________________________________________________________________ Maxim Integrated Products 1 For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800. For small orders, phone 1-800-835-8769. 1 page 155Mbps/622Mbps Clock Recovery and Data Retiming IC with Fully Integrated Phase/Frequency Detector _____________________________Typical Operating Characteristics (continued) 155Mbps RECOVERED CLOCK AND RETIMED DATA (SINGLE ENDED) 622Mbps RECOVERED CLOCK AND RETIMED DATA (SINGLE ENDED) DATA DATA 2ns/div RECOVERED CLOCK JITTER (155Mbps, 27-1 PRBS, 5.1ps RMS) CLOCK CLOCK RECOVERED CLOCK JITTER (155Mbps, 1-0 PATTERN, 4.7ps RMS) 500ps/div RECOVERED CLOCK JITTER (622Mbps 27-1 PRBS 9.0ps RMS) RF = 20Ω CF = 2.2µF RF = 20Ω CF = 2.2µF RF = 20Ω CF = 2.2µF Mean 40.61ns RMS∆ 5.13ps PkPk 45.6ps 10ps/div µ±1σ µ±2σ µ±3σ 68.961% 95.844% 99.717% Mean 40.65ns RMS∆ 4.7ps PkPk 38.4ps 10ps/div µ±1σ 69.674% µ±2σ 95.558% µ±3σ 99.698% Mean 38.68ns RMS∆ 9.049ps PkPk 79.4ps 10ps/div µ±1σ µ±2σ µ±3σ 69.747% 95.453% 99.582% _______________________________________________________________________________________ 5 5 Page 155Mbps/622Mbps Clock Recovery and Data Retiming IC with Fully Integrated Phase/Frequency Detector ________________________________________________________Package Information ______________________________________________________________________________________ 11 11 Page

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