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MAX4950A

Dual PCI Express Equalizer/Redriver

Ultra-Small Equalizer/Redriver Improves PCIe Signal Integrity Across Systems

Overview

Technical Documents

Ordering Info

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.

Data Sheet

Download	Rev 0	(PDF, 536kB)
E-Mail

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

Applications/Uses

Communications Switchers
Computers
External Graphics Applications
Industrial PCs
Servers
Storage Area Networks
Test Equipment

Key Specifications:

Repeaters and Buffers (SAS, SATA, PCIe, USB)

Part Number

Functions

Interface

Data Rate
(Mbps)

V_SUPPLY
(V)

I_CC
(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

TQFN/36

37.2

0 to +70

$4.43 @1k

See All Repeaters and Buffers (SAS, SATA, PCIe, USB) (15)

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.

Diagram

Typical Application Circuit

Product Guides

Signal Routing & Protection (PDF)

Reliability Reports

Reliability Report:	MAX4950A.pdf
Show FIT data for:

Software/Models

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Ordering Information

Filters:

Part Number:

Package:

Temperature:

Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX4950ACTX+			Active	TQFN;36 pin;37.2 mm² Outline Drawing:21-0141 (PDF) Land Pattern: 90-0049 (PDF) Use pkgcode/variation: T3666+2*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX4950ACTX+T			Active	TQFN;36 pin;37.2 mm² Outline Drawing:21-0141 (PDF) Land Pattern: 90-0049 (PDF) Use pkgcode/variation: T3666+2*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.