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AD8156:  6.25 Gbps, 4 × 4, Digital Crosspoint Switch with EQ

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 ...More

AD8156:  6.25 Gbps, 4 × 4, Digital Crosspoint Switch with EQ

Product 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.

Applications

  • SONET/SDH
  • Gigabit Ethernet
  • XAUI
  • Fibre Channel

    • Data Sheet, Rev. 0, 5/07

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    • 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
    • Type: 4 x 4
    • Supply Current : 120mA
    • Prop Delay (ps): 1000ps
    • Output Rise/Fall (ps): 75ps
    • Control Interface: LVCMOS/LVTTL Parallel

    Functional Block Diagram for AD8156

    Similar Products

    arrow View Full Interactive Product Selection Table
    Part# Type Data Rate (Gbps) Pos Supply Supply Current Prop Delay (ps) Input Swing (mV p-p) Output Rise/Fall (ps) Price* (1000-4999)
    AD8150 33 x 17 1.5 +3.3V to +5V 400 650 200-1000 100 $79.95
    AD8151 33 x 17 3.2 +3.3V to +5V 425 650 200-1000 100 $90.07
    AD8152 34 x 34 3.2 +2.5V to +3.3V 800 660 50-1000 100 $140.67
    AD8153 2:1/1:2 Mux-deMux 3.2 +3V to +3.6V 31 640 200-2000 85 $5.52
    AD8155 2:1/1:2 Mux-deMux 6.5 +1.8V to +3.3V 850 700 200-2000 62 $16.95
    AD8156 4 x 4 6.25 +3V to +3.6V 120 1000 200-2000 75 $13.11
    AD8158 4 x 2:1/1:2 Mux-deMux 6.5 +1.8V to +3.3V 850 700 200-2000 62 $19.18
    AD8159 4 x 2:1/1:2 Mux-deMux 3.2 +3V to +3.6V 320 600 200-2000 100 $12.09
    ADN4600 8 x 8 4.25 +1.8V to +3.3V 565 1000 300-2000 75 $24.95
    ADN8102 4 x 4 3.75 +1.8V to +3.3V 586 1000 300-2000 75 $14.62
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    Pin Count is the number of pins, balls, or pads on the device. Pin-out diagrams & pin function descriptions may be found in the datasheet.

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    • Commercial: 0 to +70 degrees Celsius
    • Military : -55 to +125 degrees Celsius
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    • Automotive: -40 to +125 degrees Celsius
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    *The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
    **Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.