AD8151 반도체 회로 부품 판매점
Digital Crosspoint Switch
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 Analog Devices |
FEATURES
Low cost
33 × 17, fully differential, nonblocking array
3.2 Gbps per port NRZ data rate
Wide power supply range: +3.3 V, –3.3 V
Low power
425 mA (outputs enabled)
35 mA (outputs disabled)
LV PECL- and LV ECL-compatible
CMOS/TTL-level control inputs: 3 V to 5 V
Low jitter
No heat sinks required
Drives a backplane directly
Programmable output current
Optimize termination impedance
User-controlled voltage at the load
Minimize power dissipation
Individual output disable for busing and reducing power
Double row latch
Buffered inputs
184-lead LQFP package
GENERAL DESCRIPTION
The AD81511 is a member of the Xstream line of products,
offering a breakthrough in digital switching and a large switch
array (33 × 17) on very little power—typically less than 1.5 W.
It also operates at data rates in excess of 3.2 Gbps per port,
making it suitable for Sonet OC-48 applications with
8/10-bit forward-error correction (FEC). Furthermore, the
price of the AD8151 makes it affordable enough to be used for
lower data rates. The AD8151’s flexible supply voltages allow
the user to operate with either emitter-coupled logic (ECL) or
positive emitter-coupled logic (PECL) data levels, and with 3.3
V for further power reduction. The control interface is CMOS-
/TTL-compatible (3 V to 5 V).
Its fully differential signal path reduces jitter and crosstalk,
while allowing the use of smaller, single-ended voltage swings.
The AD8151 is offered in a 184-lead LQFP package that
operates over the extended commercial temperature range
of 0°C to 85°C.
33 × 17, 3.2 Gbps
Digital Crosspoint Switch
AD8151
APPLICATIONS
High speed serial backplane routing to Sonet OC-48
applications with FEC
Fiber optic network switching
Fiber channel
LVDS
FUNCTIONAL BLOCK DIAGRAM
INP INN
CS
RE 33 33
7
D
A5
FIRST
RANK
17 ×
7-BIT
LATCH
SECOND
RANK
17 ×
7-BIT
LATCH
17
33 × 17
DIFFERENTIAL
SWITCH
MATRIX 17
OUTP
OUTN
WE
UPDATE
RESET
.
AD8151
Figure 1.
70ps/DIV
Figure 2. Eye Pattern, 3.2 Gbps, PRBS 23
1 Patent pending.
Rev. B
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.
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.
AD8151
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Functional Block Diagram .............................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 4
Maximum Power Dissipation ..................................................... 4
ESD Caution.................................................................................. 4
Pin Configuration and Function Descriptions............................. 5
Typical Performance Characteristics ............................................. 9
Control Interface Truth Tables...................................................... 13
Control Interface Timing Diagrams ............................................ 14
Control Interface Programming Example .............................. 16
Control Interface ............................................................................ 17
Control Pin Description............................................................ 17
Control Interface Translators.................................................... 18
Circuit Description......................................................................... 19
Applications..................................................................................... 23
Input and Output Busing .......................................................... 23
Evaluation Board ........................................................................ 23
Power Supplies ............................................................................ 24
Configuration Programming.................................................... 25
Software Installation .................................................................. 25
Software Operation .................................................................... 26
Outline Dimensions ....................................................................... 38
Ordering Guide .......................................................................... 38
REVISION HISTORY
12/05—Rev. A to Rev. B
Changes to Table 1............................................................................ 3
Changes to Figure 4.......................................................................... 5
Changes to Table 3............................................................................ 6
Changes to Table 4.......................................................................... 13
Changes to Figure 51...................................................................... 35
Changes to Ordering Guide .......................................................... 38
9/05—Rev. 0 to Rev. A
Updated Format..............................................................Universal
Change to Figure 51 ................................................................... 34
Change to Ordering Guide........................................................ 37
4/01—Revision 0: Initial Version
Rev. B | Page 2 of 40
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