AD8151 Datasheet, PDF (1/36 Pages) Analog Devices – 33 x 17, 3.2 Gb/s Digital Crosspoint Switch

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FEATURES
Low Cost
33 ؋ 17, Fully Differential, Nonblocking Array
3.2 Gb/s 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
Available in 184-Lead LQFP
APPLICATIONS
High-Speed Serial Backplane Routing to OC-48 with FEC
Fiber Optic Network Switching
Fiber Channel
LVDS
PRODUCT DESCRIPTION
AD8151 is a member of the Xstream line of products and is
a breakthrough in digital switching, offering a large switch array
(33 × 17) on very little power, typically less than 1.5 W. Addi-
tionally, it operates at data rates in excess of 3.2 Gb/s per port,
making it suitable for Sonet OC-48 with 8b/10b Forward Error
Correction (FEC). Further, the pricing of the AD8151 makes
it affordable enough to be used for lower data rates as well.
The AD8151’s flexible supply voltages allow the user to operate
with either PECL or ECL data levels and will operate down to
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.
stream^ª _{33 ؋ 17, 3.2 Gb/s}
Digital Crosspoint Switch
AD8151*
FUNCTIONAL BLOCK DIAGRAM
INP INN
CS
RE
33 33
7
D
5
A
FIRST
RANK
17 ؋
7-BIT
LATCH
SECOND
RANK
17 ؋
7-BIT
LATCH
33 ؋ 17
17
DIFFERENTIAL
SWITCH 17
MATRIX
OUTP
OUTN
WE
UPDATE
RESET
AD8151
Figure 1. Eye Pattern, 3.2 Gb/s, PRBS 23
*Patent Pending.
Xstream is a trademark of Analog Devices, Inc.
REV. 0
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© Analog Devices, Inc., 2001