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AD8156-EVALZ Folha de dados(PDF) 1 Page - Analog Devices |
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AD8156-EVALZ Folha de dados(HTML) 1 Page - Analog Devices |
1 / 20 page 6.25 Gbps, 4 × 4, Digital Crosspoint Switch with EQ AD8156 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 ©2007 Analog Devices, Inc. All rights reserved. FEATURES 4 × 4, fully differential, nonblocking array Configurable for dual 2 × 2 operation DC to 6.25 Gbps per channel, NRZ data rate Programmable input equalization compensates for over 40” of FR-4 at 6.25 Gbps Multicast and broadcast modes of operation Programmable output swing 100 mV p-p to 1.6 V p-p differential Power supply: 3.3 V (±10%) Low power No EQ: 400 mW typical Maximum EQ: 700 mW typical Inputs: ac-coupled or dc-coupled Wide set of dc-coupled input standards 3.3 V/2.5 V/1.8 V CML or 3.3 V LVPECL Control: LVTTL- or LVCMOS-compatible Low additive jitter: 25 ps p-p typical Low random jitter: 0.8 ps rms Integrated 50 Ω termination impedance at inputs/outputs Individual output disable for power savings 49-ball, 8 mm × 8 mm BGA, 1 mm pitch APPLICATIONS Backplane equalization SONET/SDH Gigabit Ethernet XAUI Fibre Channel FUNCTIONAL BLOCK DIAGRAM EQ 4 4 CS RST UPD WE RE MODE D[3:0] A[3:0] CONTROL LOGIC AD8156 IN0P/N IN1P/N IN2P/N IN3P/N OUT0P/N OUT1P/N OUT2P/N OUT3P/N EQ EQ EQ OUTPUT DRIVERS INPUT RECEIVERS INPUT EQUALIZATION 4 × 4 SWITCH Figure 1. GENERAL DESCRIPTION The AD8156, a member of the Xstream line of products, is a high speed, fully differential, digital crosspoint switch. The part can function as a 4 × 4 crosspoint switch with double-latched memory, allowing simultaneous updates, or as a dual 2 × 2 with direct output control. The AD8156 has low power dissipation, typically 700 mW on 3.3 V with all outputs and input equalizers active. It operates at any data rate from dc to 6.25 Gbps per port. Each input channel on the AD8156 has a programmable input equalizer to compensate for signal loss over a backplane. The AD8156 high speed inputs are compatible with both ac- coupled and dc-coupled 3.3 V, 2.5 V, or 1.8 V CML, as well as 3.3 V LVPECL data levels. The control interface is LVTTL- and LVCMOS-compatible at 3.3 V. All input and output termination resistors are integrated for ease of layout and to minimize impedance mismatch. Input equalization and unused outputs can be individually disabled to minimize power dissipation. The AD8156 is packaged in a 49-ball, 8 mm × 8 mm, BGA package with a 1 mm ball pitch. It operates over the industrial temperature range of −40°C to 85°C. |
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Descrição semelhante - AD8156-EVALZ |
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