DS32EL0421 - 125 – 312.5 MHz Serializer with DDR LVDS Parallel LVDS Interface

Datasheet Packaging Samples & Pricing Knowledge Base

Features
•5-bit LVDS parallel data interface
•Programmable transmit de-emphasis
•Configurable output levels (VOD)
•Selectable DC-balanced encoder
•Selectable data scrambler
•Remote Sense for automatic detection and negotiation of link status
•On chip LC VCOs
•Redundant serial output (ELX device only)
•Data valid signaling to assist with synchronization of multiple receivers
•Supports AC- and DC-coupled signaling
•Integrated CML and LVDS terminations
•Configurable PLL loop bandwidth
•Programmable output termination (50Ω or 75Ω).
•Built-in test pattern generator
•Loss of lock and error reporting
•Configurable via SMBus
•48-pin LLP package with exposed DAP

Key Specification

•1.25 to 3.125 Gbps serial data rate
•125 to 312.5 MHz DDR parallel clock
•-40° to +85°C temperature range
•>8 kV ESD (HBM) protection
•Low Intrinsic Jitter — 35ps at 3.125 Gbps

General Description

The DS32EL0421/ DS32ELX0421 is a 125 MHz to 312.5 MHz (DDR) serializer for high-speed serial transmission over FR-4 printed circuit board backplanes, balanced cables, and optical fiber. More...


  Typical Application
click for larger image

Fig 1 Typ App Diagram

Parametric Table     expand
Parametric Table    collapse
Function Serializer
Total Throughput 3125 Mbps
Payload/Channel 3125 Mbps
Signal Conditioning De-Emphasis
Clock Min 125 MHz
Clock Max 312.5 MHz
Other Supply 2.5
Compression Ratio 5:1 DDR
Function Serializer
Total Throughput 3125 Mbps
Payload/Channel 3125 Mbps
Signal Conditioning De-Emphasis
Clock Min 125 MHz
Clock Max 312.5 MHz
Input Compatibility LVDS
Output Compatibility CML
Reference Clock Req'd Deserializer No
Power Consumption_ 500 mW
Reach 20 meters CAT6
Other Supply 2.5
SupplyVoltage 3.3 Volt
ESD 8 kV
Temperature Min -40 deg C
Temperature Max 85 deg C
Compression Ratio 5:1 DDR
Number Transmitters 1
Communications Yes
Sensing & Imaging Yes
Parallel Bus Width 5 bit
View Using Catalog

  Also Recommended
DS32EL0124Matching 3.125 Gbps DeSerializer With 5-bit DDR LVDS Interface
DS32ELX04213.125 Gbps Serializer With Redundant Serial Outputs


Datasheet
RoHS Compliance Information Size in KbytesDate Click link below to Download
DS32EL0421 , DS32ELX0421 125 – 312.5 MHz Serializer with DDR LVDS Parallel LVDS Interface 545 Kbytes 29-Jul-08 View Online
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Package Availability, Models, Samples & Pricing
Part NumberPackageFactory Lead TimeModelsSamples &
Electronic
Orders		Budgetary PricingStd
Pack
Size		Package
Marking
Format
TypePinsSpec.MSL
Rating		Peak
Reflow		RoHS
Report		CAD
Symbols		WeeksQtyQty$US each
DS32EL0421SQLLP48NOPB3260RoHS N/A Full productionN/A
Samples1K+$14.00reel
of
1000		NS
UZXYTT
32EL0421
N/AN/A

General Description

The DS32EL0421/ DS32ELX0421 is a 125 MHz to 312.5 MHz (DDR) serializer for high-speed serial transmission over FR-4 printed circuit board backplanes, balanced cables, and optical fiber. This easy-to-use chipset integrates advanced signal and clock conditioning functions, with an FPGA friendly interface.

The DS32EL0421/DS32ELX0421 serializes up to 5 parallel input LVDS channels to create a maximum data payload of 3.125 Gbps. If the integrated DC-balance encoding is enabled, the maximum data payload achievable is 2.5 Gbps.

The DS32EL0421/DS32ELX0421 serializers feature remote sense capability to automatically detect and negotiate link status with its companion DS32EL0124/DS32ELX0124 deserializers without requiring an additional feedback path.

The parallel LVDS interface reduces FPGA I/O pins, board trace count and alleviates EMI issues, when compared to traditional single-ended wide bus interfaces.

The DS32EL0421/DS32ELX0421 is programmable through a SMBus interface as well as through control pins.

[Information as of 10-Oct-2008]