MAX4950CTO+T Maxim Integrated Products, MAX4950CTO+T Datasheet

IC PCIE REDRIVER 3.3V 42TQFN

MAX4950CTO+T

Manufacturer Part Number
MAX4950CTO+T
Description
IC PCIE REDRIVER 3.3V 42TQFN
Manufacturer
Maxim Integrated Products
Type
Equalizerr
Datasheets

Specifications of MAX4950CTO+T

Voltage - Supply
3.3V
Mounting Type
Surface Mount
Package / Case
42-TQFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Number Of Drivers/receivers
-
Protocol
-
The MAX4950 PCI Express (PCIe
redriver operates from a single +3.3V supply. This
device improves signal integrity at the receiver through
programmable input equalization and programmable
redrive circuitry. The output circuitry reestablishes de-
emphasis lost on the board, compensating for circuit
board loss. This device permits optimal placement of
key PCIe components and longer runs of stripline,
microstrip, or cable.
The MAX4950 contains four identical buffers capable of
equalizing differential signals at data rates up to 5GT/s,
and features electrical idle and receiver detection on
each channel. The MAX4950 is ideal for use with PCIe
Gen I (2.5GT/s) and Gen II (5.0GT/s) data rates and
features a power-saving mode.
The MAX4950 is available in a small, lead-free, 42-pin
(3.5mm x 9.0mm) TQFN package for optimal layout and
minimal space requirements. The board traces are flow-
through for ease of layout. The MAX4950 is specified
over the 0°C to +70°C operating temperature range.
19-4439; Rev 0; 5/09
PCIe is a registered trademark of PCI-SIG Corp.
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim's website at www.maxim-ic.com.
Servers
Industrial PCs
Test Equipment
Desktop Computers
Laptop Computers (for External Video Cards)
Communications Switchers
Storage Area Networks
________________________________________________________________ Maxim Integrated Products
General Description
Quad PCI Express Equalizer/Redriver
*CONNECT EXPOSED PAD (EP) TO GND.
RX_DET
TOP VIEW
O_AMP
P_SAV
EN
39
40
41
42
Applications
®
38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22
1
+
) quad equalizer/
*EP
2
3
4
5
6
7
MAX4950
8
TQFN
9 10 11 12 13 14 15 16 17
♦ Single +3.3V Supply Operation
♦ Generation I (2.5GT/s) and Generation II (5.0GT/s)
♦ Return Loss:
♦ Very Low Latency
♦ Individual Lane Detection
♦ Low Lane-to-Lane Skew: ±50ps
♦ Total Jitter ≤ 35ps
♦ Three-Level-Programmable Input Equalization
♦ Three-Level-Programmable Output Deemphasis
♦ On-Chip 50Ω Input/Output Terminations
♦ ±2kV Human Body Model (HBM) Protection on All
♦ Space-Saving, 3.5mm x 9.0mm, TQFN Packaging
+ Denotes a lead(Pb)-free/RoHS-compliant package.
* EP = Exposed pad.
Capable
Pins
MAX4950CTO+
≥ 10dB (f ≤ 1.25GHz)
≥ 8dB (f ≤ 2.5GHz)
280ps Propagation Delay
PART
21
20
19
18
TEMP RANGE
P-P
0°C to +70°C
Ordering Information
OEQ0
OEQ1
INEQ0
INEQ1
at BER = 10
Pin Configuration
-12
PIN-PACKAGE
42 TQFN-EP*
Features
1

Related parts for MAX4950CTO+T

MAX4950CTO+T Summary of contents

Page 1

... RX_DET O_AMP 41 P_SAV 42 *CONNECT EXPOSED PAD (EP) TO GND. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com. ® ) quad equalizer/ ♦ Single +3.3V Supply Operation ♦ Generation I (2.5GT/s) and Generation II (5.0GT/s) Capable ♦ ...

Page 2

Quad PCI Express Equalizer/Redriver ABSOLUTE MAXIMUM RATINGS (Voltages referenced to GND.) V ........................................................................-0.3V to +4.0V CC All Other Pins (Note 1)................................-0. Continuous Current IN_P and IN_N..................................±30mA Peak Current IN_P and IN_N (pulsed for 1µs, 1% duty cycle)............................................................±100mA Continuous ...

Page 3

Quad PCI Express Equalizer/Redriver ELECTRICAL CHARACTERISTICS (continued +3.0V to +3.6V 75nF coupling capacitor on each output otherwise noted. Typical values are PARAMETER SYMBOL Differential Output Return RL TX-DIFF Loss Common-Mode ...

Page 4

Quad PCI Express Equalizer/Redriver ELECTRICAL CHARACTERISTICS (continued +3.0V to +3.6V 75nF coupling capacitor on each output otherwise noted. Typical values are PARAMETER SYMBOL Electrical Idle Detect V TX-IDLE- Threshold THRESH ...

Page 5

Quad PCI Express Equalizer/Redriver (V = +3.3V and T = +25°C, unless otherwise noted. All eye diagrams measured using K28.5 pattern INEQ0 = INEQ1 = 0, O_AMP = 200mV , OEQ0 = 0, OEQ1 = ...

Page 6

Quad PCI Express Equalizer/Redriver (V = +3.3V and T = +25°C, unless otherwise noted. All eye diagrams measured using K28.5 pattern INEQ0 = INEQ1 = 0, O_AMP = 200mV IN OEQ0 = 1, OEQ1 = ...

Page 7

Quad PCI Express Equalizer/Redriver PIN NAME 32 OUT1N Inverting Output 1 33 OUT1P Noninverting Output 1 35 OUT0N Inverting Output 0 36 OUT0P Noninverting Output 0 Enable Input. Drive EN low for standby mode. Drive EN high for normal mode. ...

Page 8

Quad PCI Express Equalizer/Redriver Detailed Description The MAX4950 quad equalizer/redriver is designed to support both Gen I (2.5GT/s) and Gen II (5.0GT/s) PCIe data rates. The device contains four identical drivers with idle/receive detect on each lane and equalization to ...

Page 9

Quad PCI Express Equalizer/Redriver Table 5. Power-Save Mode Quiescent Power Dissipation QUIESCENT POWER SUPPLY CURRENT EN P_SAV O_AMP (typ) (mA ...

Page 10

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2009 Maxim Integrated Products ...

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