SY58627L Datasheet, PDF (1/18 Pages) Micrel Semiconductor – DC-to-6.4Gbps Backplane Receive Buffer with Four Stage Programmable Equalization and DC-Offset Control

SY58627L
DC-to-6.4Gbps Backplane Receive Buffer with
Four Stage Programmable Equalization
and DC-Offset Control
Preliminary
General Description
The SY58627L high-speed, low jitter receive buffer is
optimized for backplane and transmission line data-path
management applications. The SY58627L is capable of
receiving serial data up to 6.4Gbps across up to 36
inches of FR4.
The SY58627L differential input includes Micrel’s
unique, 3-pin input termination architecture that directly
interfaces to any differential signal as small as 100mV_pk
(AC- or DC-coupled) without any termination resistor
networks in the signal path. The outputs are 50Ω
source-terminated CML optimized to drive 400mV_pk into
50Ω (100Ω load across the output pair). The I/O
termination is connected to a dedicated VTT pin for
added bias flexibility.
The SY58627L receiver input provides four levels of
equalization to compensate for degraded signals
resulting from transmission losses. The equalization is
programmed with a three-bit interface.
The SY58627L operates at 3.3V ±10% supply and is
guaranteed over the full industrial temperature range of
-40°C to +85°C. The SY58627L is part of Micrel’s high-
speed, Precision Edge^® product line.
All data sheets and support documentation can be
found on Micrel’s web site at: www.micrel.com.
Features
Precision Edge^®
• Selectable equalizing network to optimize incoming
data eye pattern
• Four selectable equalization levels
• Receives up to 36” FR4 PCB trace, or longer
combinations of FR4+cable+interconnect
• DC through 6.4Gbps data rate throughput
• Integrated loopback capability
• Unique, flexible I/O:
- Patented, Internal termination to VTTIN pin
interfaces to any differential AC- or DC-coupled
signals
- 50Ω source-terminated CML outputs minimize
round-trip reflections
- Wide input voltage range: 100mV to 1.3V_PK
- Output disable
- DC-offset control with VTT I/O
• Input Loss-of-Signal
- Hysteresis included
• 3.3V ±10% supply voltage
• -40°C to +85°C temperature range
• Available in 32-pin (5mm x 5mm) MLF^TM package
Applications
• ATE, T&M backplane management
• Serial backplane management
• Combination FR4+cable+interconnect receiver
• Fibre Channel, GigE, SONET/SDH data transmission
• Electrical interface and interconnect applications that
require DC-offset control
Precison Edge is a registered trademark of Micrel, Inc.
MLF and MicroLeadFrame are trademarks of Amkor Technology, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel [phone] • fax + 1 [phone] • http://www.micrel.com
January 2006
M9999-012606-A
[e-mail] or [phone]