19-2255; Rev 0; 12/01
MAX3873 Evaluation Kit
General Description
The MAX3873 evaluation kit (EV kit) simplifies evaluation
of the MAX3873, a low-power 2.488Gbps/2.67Gbps
clock recovery and data retiming IC. The EV kit enables
testing of all the MAX3873 functions. SMA connectors
are provided for the differential CML-compatible data
and clock outputs. The differential data and clock out-
puts have on-board AC-coupling capacitors to allow
direct connection to a high-speed oscilloscope. The
MAX3873 EV kit is configured for 3.3V operation and
consumes up to 150mA.
Features
o
SMA Connections for All System I/Os
o
Test Point for Monitoring Loss-of-Lock (LOL)
o
Single 3.3V Power-Supply Operation
o
Fully Assembled and Tested
Evaluates: MAX3873
Ordering Information
PART
MAX3873EVKIT
TEMP RANGE
-40擄C to +85擄C
IC PACKAGE
20 QFN-EP (4mm x 4mm)
Component List
DESIGNATION
C1鈥揅6,
C10鈥揅22
C7
C8
C9
C23鈥揅26
D1
J1鈥揓6
J9鈥揓12
R1
L1鈥揕4
JU1鈥揓U5, JU9,
JU11
JU6鈥揓U8, JU10
JU6鈥揓U8, JU10
VCC, GND
U1
None
None
QTY
19
1
1
1
0
1
6
0
1
4
0
4
4
2
1
1
1
DESCRIPTION
0.1碌F 鹵10% ceramic capacitors
(0402)
0.01碌F 鹵10% ceramic capacitor
(0402)
33碌F 鹵20% tantalum capacitor
2.2碌F 鹵10% ceramic capacitor
(1206)
Not installed
Red LED
SMA connectors (edge-mount)
Not installed
392鈩?鹵1% resistor (0402)
56nH inductors
Not installed
3-pin headers (0.1in centers)
Shunts
Test points
MAX3873EGP (20-pin QFN)
4mm x 4mm
MAX3873 evaluation kit
MAX3873 data sheet
Detailed Description
The MAX3873 EV kit is fully assembled and factory test-
ed. It enables testing of all MAX3873 functions.
Test Equipment Required
鈥?3.3V power supply with 300mA current capability
鈥?Signal-source, 2.7Gbps minimum capability
鈥?Jitter analyzer capable of 2.7Gbps performance
鈥?Oscilloscope with at least 3GHz performance
Connections
The serial data inputs (SDI+, SDI-) have on-board AC-
coupling capacitors. All the MAX3873 data and clock
outputs (SDO+, SDO-, SCLKO+, SCLKO-) are internally
terminated to 50鈩?and have on-board AC-coupling
capacitors. Configured in this way, these outputs can
be directly connected to the 50鈩?inputs of a high-
speed oscilloscope for analysis.
Setup
1) Select either 2.488Gbps or 2.67Gbps with JU10
(RATESET).
2) Enable/Disable FASTRACK capture mode with JU6
(FASTRACK).
3) Enable/Disable Clock output with JU8 (SCLKEN).
4) Select amplitude of CML outputs to high/medium/low
with JU7 (MODE).
5) Connect a 2.488Gbps/2.67Gbps PRBS NRZ signal to
(SDI+, SDI-) inputs with 50鈩?cables.
6) Connect the (SDO+, SDO-, SCLKO+, SCLKO-) out-
puts to a 50鈩?high-speed oscilloscope. Terminate
unused outputs with 50鈩?
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim鈥檚 website at www.maxim-ic.com.
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