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MAX3987
8.5Gbps Quad Equalizer and Preemphasis Driver
Best-in-Class Redriver Can Equalize 25in to 30in of FR4
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Status
Active: Data sheet on request only
Description
The MAX3987 is a 4-channel receive and transmit equalizer (EQ). It compensates for transmission medium losses encountered with FR4 stripline/microstrip and/or
high-speed cable. The device can be used at the beginning, middle, or end of a channel. The input equalization requires no setting, and the output preemphasis (PE) is programmable.
For each channel, the preemphasis level, output drive level, output polarity, and powering down of unused outputs are programmable through an I²C serial interface. It can also be configured globally through pins.
The device operates from a 2.5V or 3.3V supply, and is packaged in a 7mm x 7mm, 48-pin TQFN.
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Data Sheet
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An evaluation kit is available: MAX3987EVKIT
Key Features
- Up to 8.5 NRZ Data Speed
- Receive Equalization Up to 30in FR4
- Preemphasis Drive Up to 30in FR4
- Global and Individual Programming of Preemphasis, Output Drive Levels, Polarity Inversion, and Offset Cancellation
- Signal Detect and Internal Output Squelch
- Compliant with SAS-2 and SATA Revision 3 OOB
- Coding Independent, 8B/10B, 64B/66B, Scrambled, and Others
- Differential CML Data-Output Drive
- I²C Serial Interface and Pin Programmable
- Software Power-Down of Unused Outputs
- 0.5W Typical Power Dissipation for Drive Level 1 at VCC = 2.5V
- High-Performance, Lead-Free, 7mm x 7mm, 48-Pin TQFN Package
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Applications/Uses
- FR4 and Cable Equalization
- PCIe® Compatible
- Preemphasis and Receive Equalization
- Redrive
- XAUI and XAUI2, Fibre Channel, Interlaken, InfiniBandTM/SM, SAS-2 and SATA Revision 3 OOB
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Key Specifications:
| Equalizers (Cable and Circuit Board) |
| Part Number |
Applications |
Data Rate
(Mbps) |
Max. Reach @ Max. Data Rate |
VSUPPLY
(V) |
I/O Type |
Channels |
Package/Pins |
Oper. Temp.
(°C) |
| max |
| MAX3987 |
| FR4 and Cable Equalization | | PCIe® Compatible | | Preemphasis and Receive Equalization | | Redrive | | XAUI |
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8500 |
30in FR4 |
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CML |
4 |
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-40 to +85 |
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See All Equalizers (Cable and Circuit Board) (21)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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More Information
Didn't Find What You Need?
Information Index
Document Ref.: 19-4973
Rev 1;
2010-01-11
This page last modified: 2011-06-07
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