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MAX4950A
Dual PCI Express Equalizer/Redriver
Ultra-Small Equalizer/Redriver Improves PCIe Signal Integrity Across Systems
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Status
Active: In Production.
Description
The MAX4950A dual PCI Express® (PCIe) equalizer/redriver operates from a single +3.3V supply. This device improves signal integrity at the receiver through programmable input equalization and redrive circuitry with output deemphasis to correct for high-frequency losses. This device permits optimal placement of key PCIe components and longer runs of stripline, microstrip, or cable.
The MAX4950A contains two identical channels capable of equalizing PCIe Gen I (2.5GT/s) and Gen II (5.0GT/s) signals. The MAX4950A features electrical idle and receiver detection on each channel and a power-saving mode.
The MAX4950A is available in a small 36-pin (6.0mm x 6.0mm) TQFN package with flowthrough traces for optimal layout and minimal space requirements. The MAX4950A is specified over the 0°C to +70°C commercial operating temperature range.
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Data Sheet
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Key Features
- Single +3.3V Supply Operation
- PCIe Gen I (2.5GT/s) and Gen II (5.0GT/s) Capable
- Excellent Differential Return Loss:
- ≥ 8dB (f = 1.25GHz to 2.5GHz)
- Very Low Latency with 280ps (typ) Propagation Delay
- Individual Lane Detection
- Three-Level Programmable Input Equalization
- Three-Level Programmable Output Deemphasis
- Standard, -2.5dB Programmable Output Levels
- On-Chip 50Ω Input/Output Terminations
- Space-Saving, 6.0mm x 6.0mm TQFN Package
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Applications/Uses
- Communications Switchers
- Computers
- External Graphics Applications
- Industrial PCs
- Servers
- Storage Area Networks
- Test Equipment
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Key Specifications:
| Repeaters and Buffers (SAS, SATA, PCIe, USB) |
| Part Number |
Functions |
Interface |
Data Rate
(Mbps) |
VSUPPLY
(V) |
ICC
(mA) |
Channels |
Package/Pins |
Smallest Available Pckg.
(mm2) |
Oper. Temp.
(°C) |
Budgetary Price |
| max |
typ |
max w/pins |
See Notes |
| MAX4950A |
Equalizer/Re-Driver |
PCIe |
5000 |
3.3 |
130 |
2 |
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37.2 |
0 to +70 |
$4.43 @1k |
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See All Repeaters and Buffers (SAS, SATA, PCIe, USB) (14)
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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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Diagram
Typical Application Circuit
More Information
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Information Index
Document Ref.: 19-4583
Rev 0;
2009-05-27
This page last modified: 2010-03-10
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