MAX3787 Datasheet, PDF (1/15 Pages) Maxim Integrated Products – 1Gbps to 12.5Gbps Passive Equalizer for Backplanes and Cables

19-0406; Rev 2; 2/08
EVAALVUAAILTAIOBNLEKIT
1Gbps to 12.5Gbps
Passive Equalizer for Backplanes and Cables
General Description
The MAX3787 is a 1Gbps to 12.5Gbps equalization
network that compensates for transmission medium loss-
es encountered with FR4 and cables. The equalization
network is composed entirely of passive components
and functions equally well for 8b/10b or scrambled sig-
nals. It is packaged in a small 1.5mm x 1.5mm chip-
scale package (UCSP™) that can be placed anywhere
along the transmission medium to increase jitter margin
for high-speed interconnects. Roughly the size of two
0603 components, the MAX3787 easily provides place-
ment and routing flexibility.
At 8.5Gbps, the MAX3787 compensates for spans up to
18in of FR4 and 7m of cable. At 12.5Gbps, the MAX3787
compensates for spans up to 12in of FR4 and 3m of
cable. Input and output impedance is 100Ω differential.
The MAX3787 requires no power and operates over a
-40°C to +125°C temperature range.
Applications
Backplane Interconnect Compensation
Cable Interconnect Compensation
Chip-to-Chip Link Extensions
Ethernet and Fibre-Channel Serial Modules
Chassis Life Extension
UCSP is a trademark of Maxim Integrated Products, Inc.
Features
♦ No Power Supply Required
♦ Small 1.5mm x 1.5mm Chip-Scale Package
♦ Passive Equalization Reduces ISI
♦ Operates from 1Gbps to 12.5Gbps
♦ Extends Board Link
♦ Extends Cable Link
♦ Coding Independent, 8b/10b or Scrambled
Ordering Information
PART
TEMP RANGE
MAX3787ABL -40°C to +125°C
MAX3787AWL+ -40°C to +125°C
+Denotes a lead-free package.
PIN-
PKG
PACKAGE CODE
4 UCSP
B9-7
4 WLP
W91B1+3
Pin Configuration
TOP VIEW
1
2
3
A
IN+
OUT+
B
MAX3787
C
IN-
OUT-
UCSP/WLP
Typical Application Circuits
LINE CARD
(100Ω) Tx
ALL PASSIVE BACKPLANE INTERCONNECT
IN+
OUT+
IN-
MAX3787
OUT-
100Ω FR4
SWITCH CARD
Rx (100Ω)
(100Ω) Rx
OUT+
IN+
OUT- MAX3787
IN-
100Ω FR4
Tx (100Ω)
Typical Application Circuits continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
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.