Datasheet

General Description
The MAX4889B evaluation kit (EV kit) provides a proven
design to evaluate the MAX4889B PCI Express
®
(PCIe)
Gen II 5.0Gbps passive switch. The MAX4889B is a quad
double-pole/double-throw (4 x DPDT) switch ideal for
switching four half lanes of PCIe data between two desti-
nations. The MAX4889B EV kit is used for critical tests
(e.g., eye diagrams and s-parameter measurements
such as insertion loss, return loss, and off-isolation).
The MAX4889B EV kit PCB comes with a MAX4889BETO+
installed. The MAX4889BETO+ is available in a lead(Pb)-
free 3.5mm x 9.0mm, 42-pin TQFN package with an
exposed pad.
The MAX4889B EV kit can also be used to evaluate the
MAX4889C. Contact the factory for a free sample of the
pin-compatible MAX4889CETO+.
Features
o Eye Diagram Test Circuit with SMA Input/Output
o Calibration Trace Load and No Load
o Lead(Pb)-Free and RoHS Compliant
o Proven PCB Layout
o Fully Assembled and Tested
Evaluates: MAX4889B/MAX4889C
MAX4889B Evaluation Kit
________________________________________________________________
Maxim Integrated Products
1
19-4416; Rev 0; 3/09
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Ordering Information
PART TYPE
MAX4889BEVKIT+ EV Kit
+
Denotes lead(Pb)-free and RoHS compliant.
Quick Start
Required Equipment
MAX4889B EV kit
3.3V/100mA DC power supply
Pulse data generator with frequency of at least
2.5GHz (e.g., Agilent 81142A)
Digital serial analyzer sampling oscilloscope with
frequency of at least 2.5GHz (e.g., Tektronix
DSA8200)
Six SMA cables of equal lengths
Procedure
The MAX4889B EV kit is fully assembled and tested.
Follow the steps below to verify board operation and
eye diagram/jitter measurements. Caution: Do not turn
on the power until all connections are completed.
1) Connect the 3.3V/100mA power supply to the VCC
and GND pads of the EV kit.
2) Verify that JU1 is in the 2-3 position.
3) Set up the pulse data generator to a bit rate of
5Gbps (2.5GHz), the V
HI
and V
LO
to +250mV and
-250mV, respectively, nonreturn-to-zero (NRZ)
mode, and desired pseudorandom binary (bit)
sequence (PRBS) with 2
15
-1 or 2
7
-1 patterns.
4) Use a pair of SMA cables to connect the differential
output signals of the pulse data generator to the
AOUTA+ and AOUTA- (P5 and P6) of the EV kit.
5) Use a single SMA cable to connect the trigger input
of the digital serial analyzer to the trigger output of
the pulse data generator.
Component List
DESIGNATION QTY DESCRIPTION
C1, C2, C6,
C8, C10, C12,
C14, C16
8
0.1µF ±10%, 16V X7R ceramic
capacitors (0402)
Murata GRM155R71C104K
C3, C4, C5,
C7, C9, C11,
C13, C15
8
1000pF ±10%, 16V X5R ceramic
capacitors (0402)
Murata GRM155R61C102K
C17 1
10µF ±10%, 16V X5R ceramic
capacitor (0805)
Murata GRM21BR61C106K
JU1 1 3-pin header
P1–P12 12
Edge-mount receptacle, SMA
connectors
R1, R2 2 49.9Ω ±1% resistors (0402)
U1 1
5.0Gbps PCIe passive switch
(42 TQFN-EP*)
Maxim MAX4889BETO+
1 Shunt
1 PCB: MAX4889B Evaluation Kit+
Component Supplier
SUPPLIER PHONE WEBSITE
Murata
Electronics North
America, Inc.
770-436-1300
www.murata-
northamerica.com
Note: Indicate that you are using the MAX4889B when contacting
this component supplier.
PCI Express is a registered trademark of PCI-SIG Corp.
*
EP = Exposed pad.

Summary of content (6 pages)