QLX4300SIQSR Intersil, QLX4300SIQSR Datasheet

IC EQUALIZER REC 3.125GBPS 46QFN

QLX4300SIQSR

Manufacturer Part Number
QLX4300SIQSR
Description
IC EQUALIZER REC 3.125GBPS 46QFN
Manufacturer
Intersil
Series
QLx™r
Datasheet

Specifications of QLX4300SIQSR

Applications
Data Transport
Interface
SMBus (2-Wire/I²C)
Voltage - Supply
1.1 V ~ 1.3 V
Package / Case
46-WQFN
Mounting Type
Surface Mount
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Quad Lane Extender
QLx4300-S45
The QLx4300-S45 is a settable quad receive-side
equalizer with extended functionality for advanced
protocols operating with line rates up to 3.125Gb/s such
as InfiniBand (SDR) and 10GBase-CX4. The
QLx4300-S45 compensates for the frequency dependent
attenuation of copper twin-axial cables, extending the
signal reach up to 40m on 24AWG cable.
The small form factor, highly-integrated quad design is
ideal for high-density data transmission applications
including active copper cable assemblies. The four
equalizing filters within the QLx4300-S45 can each be set
to one of 32 compensation levels, providing optimal
signal fidelity for a given media and length. The
compensation level for each filter can be set by either (a)
three external control pins or (b) a serial bus interface.
When the external control pins are used, 18 of the 32
boost levels are available for each channel. If the serial
bus is used, all 32 compensation levels are available.
Operating on a single 1.2V power supply, the
QLx4300-S45 enables per channel throughputs of up to
3.125Gb/s while supporting the lower data rates of
2.5Gb/s and 1.5Gb/s. The QLx4300-S45 uses current
mode logic (CML) inputs/outputs and is packaged in a
4mmx7mm 46 lead QFN. Individual lane impedance
select support is included for module applications.
Typical Application Circuit
November 19, 2009
FN6982.1
1
QLX4300-S45
1-888-INTERSIL or 1-888-468-3774
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
<40M 24AWG
Features
• Supports data rates up to 3.125Gb/s
• Low power (78mW per channel)
• Low latency (<500ps)
• Four equalizers in a 4mmx7mm QFN package for
• Each equalizer boost is independently pin selectable
• Beacon signal support and line silence preservation
• 1.2V supply voltage
• Individual channel power-down (impedance select)
Applications
• InfiniBand (SDR)
• 10GBase-CX4
• PCI Express (Gen 1)
• DisplayPort
• XAUI
• SAS (1.0)
• High-speed active cable assemblies
• High-speed printed circuit board (PCB) traces
Benefits
• Thinner gauge cable
• Extends cable reach greater than 3x
• Improved BER
straight route-through architecture and simplified
routing
and programmable
All other trademarks mentioned are the property of their respective owners.
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
QLX4300-S45
Copyright Intersil Americas Inc. 2009. All Rights Reserved

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QLX4300SIQSR Summary of contents

Page 1

... CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. | 1-888-INTERSIL or 1-888-468-3774 Intersil (and design registered trademark of Intersil Americas Inc. All other trademarks mentioned are the property of their respective owners. Copyright Intersil Americas Inc. 2009. All Rights Reserved ...

Page 2

... PART MARKING QLX4300SIQT7 QLX4300SIQ QLX4300SIQSR QLX4300SIQ NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets; molding compounds/die attach materials and NiPdAu plate - e4 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020 ...

Page 3

Pin Descrptions PIN NAME PIN NUMBER DT 1 Detection Threshold. Reference DC current threshold for input signal power detection. Data output OUT[k] is muted when the power of the equalized version of IN[k] falls below the threshold. Tie to ground ...

Page 4

Pin Descrptions (Continued) PIN NAME PIN NUMBER OUT2[N,P] 33, 34 Equalizer 2 differential output, CML. The use of 100nF low ESL/ESR MLCC capacitor with at least 4GHz frequency response is recommended. OUT1[N,P] 36, 37 Equalizer 1 differential output, CML. The ...

Page 5

... Thermal Resistance (Typical QFN Package (Note 1 Operating Ambient Temperature Range 0°C to +70°C Storage Ambient Temperature Range . . . . . -55°C to +150°C Maximum Junction Temperature +125°C Pb-Free Reflow Profile see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp CONDITION NRZ data applied to any channel Typical values are ...

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Electrical Specifications Typical values are PARAMETERS SYMBOL Input Return Loss (Com. to Diff. Conversion) Output Amplitude Range V OUT Differential Output Impedance Output Return Loss (Differential) Output Return Loss S 22 ...

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NOTES: (Continued) 10. During line silence, transmitter noise in excess of this voltage range may result in differential output amplitudes from the QLx4300-S45 that are greater than 20mV 11. The data pattern preceding line silence mode is comprised of the ...

Page 8

Typical Performance Characteristics FIGURE 2. JITTER VS BOOST SETTING FOR VARIOUS CABLE LENGTHS, PRBS-7, 0.03PS SYSTEM JITTER INCLUDED OUTPUT EYE DIAGRAMS 64ps/div FIGURE 3. RECEIVED SIGNAL AFTER 10m OF 26AWG TWIN-AXIAL CABLE, 3.125Gb/s 64ps/div FIGURE 5. RECEIVED SIGNAL AFTER 15m ...

Page 9

Typical Performance Characteristics 64ps/div FIGURE 7. RECEIVED SIGNAL AFTER 20m OF 26AWG TWIN-AXIAL CABLE, 3.125Gb/s 64ps/div FIGURE 9. RECEIVED SIGNAL AFTER 25m OF 26AWG TWIN-AXIAL CABLE, 3.125Gb/s RETURN LOSS AND CROSSTALK CHARACTERISTICS 0 Channel 1 -5 Channel 2 Channel 3 ...

Page 10

Typical Performance Characteristics 0 -5 -10 -15 -20 -25 -30 -35 0 0.5 1 1.5 2 Frequency (GHz) FIGURE 13. INPUT DIFFERENTIAL RETURN LOSS FIGURE 15. DIFFERENTIAL CROSSTALK BETWEEN ADJACENT INPUT CHANNEL Operation The QLx4300-S45 is an advanced quad lane-extender ...

Page 11

CP[k] pins are used to set the level. The equalizer transfer functions for a subset of these compensation levels are plotted in Figure 18. The flexibility of this adjustable ...

Page 12

Channel Power-Down In addition to controlling the input impedance, the IS[k] pin powers down the equalizer channel when pulled low. This feature allows a system controller individually to power down unused channels and to minimize power consumption. Example: the signal ...

Page 13

Equalization Boost Level Channel equalization for the QLx4300-S45 can be individually set to either (a) one of 18 levels through the DC voltages on external control pins or (b) one of 32 levels via a set of registers programmed by ...

Page 14

Optimal Cable Boost Settings The settable equalizing filter within the QLx4300-S45 enables the device to optimally compensate for frequency-dependent attenuation across a wide variety of channels, data rates, and encoding schemes. For the reference channels plotted in Figure 2, Table ...

Page 15

ENB t CLK DI FIGURE 22. TIMING DIAGRAM FOR PROGRAMMING THE INTERNAL REGISTERS OF THE QLx4300-S45 Serial Bus Programming Pins 16 (DI), 45 (ENB), and 46 (CLK) are used to program the registers inside the QLx4300-S45. Figure 22 shows an ...

Page 16

Serial Register Data QLx4300-S45 (A) ENB DI CLK DO Clock ENB (A) FIGURE 23. SERIAL BUS PROGRAMMING MULTIPLE QLx4300-S45 DEVICES USING SEPARATE ENB SIGNALS ENB t SCK CLK DO FIGURE 24. TIMING DIAGRAM FOR DI/DO CARRYOVER Serial Register Data QLx4300-S45 ...

Page 17

ENB t SCK CLK t t SDI HDI DI R21 R20 QLx4300-S45 (D) FIGURE 26. TIMING DIAGRAM FOR PROGRAMMING MULTIPLE QLx4300-S45 DEVICES USING DI/DO CARRYOVER Detection Thereshold (DT) Pin Functionality The QLx4300-S45 is capable of maintaining periods of line silence ...

Page 18

Typical Application Reference Designs Figures 28 and 29 show reference design schematics for a QLx4300-S45 evaluation board with an SMA connector interface. Figure 28 shows the schematic for the case when the equalizer boost level is set via the CP ...

Page 19

Typical Application Reference Designs Figures 28 and 29 show reference design schematics for a QLx4300-S45 evaluation board with an SMA connector interface. Figure 28 shows the schematic for the case when the equalizer boost level is set via the CP ...

Page 20

... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries ...

Page 21

Package Outline Drawing L46.4x7 46 LEAD THIN QUAD FLAT NO-LEAD PLASTIC PACKAGE (TQFN) Rev 0, 9/09 4.00 6 PIN 1 INDEX AREA (4X) 0.05 TOP VIEW 0.70 ±0.05 SIDE VIEW ( 3. 2.50 5.50 ...

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