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RClamp0524PQ Schematic ( PDF Datasheet ) - Semtech

Teilenummer RClamp0524PQ
Beschreibung 4-Line Surge and ESD Protection
Hersteller Semtech
Logo Semtech Logo 




Gesamt 10 Seiten
RClamp0524PQ Datasheet, Funktion
RClamp0524PQ
Low Capacitance RailClamp®
4-Line Surge and ESD Protection
PROTECTION PRODUCTS
Description
RailClamp® TVS arrays are ultra low capacitance ESD
protection devices designed to protect high speed data
interfaces. This series has been speci cally designed to
protect sensitive components which are connected to
high-speed data and transmission lines from overvoltage
caused by ESD (electrostatic discharge), CDE (Cable
Discharge Events), and EFT (electrical fast transients).
RClamp0524PQ has a typical capacitance of only 0.3 pF
between I/O pins. This allows it to be used on circuits
operating in excess of 3GHz with no signi cant signal
attenuation. ESD characteristics are highlighted by high
ESD withstand voltage (+/-15kV per IEC 61000-4-2) and
low dynamic resistance (0.43 Ohms typical). Each device
will protect four lines operating at 5 volts
RClamp0524PQ is in a 10-pin SLP2510P8 package and
is quali ed to AEC-Q100, Grade 1 (-40 to +125 oC) for
automotive applications. It measures 2.5 x 1.0 mm with
a nominal height of only 0.58 mm. The leads are nished
with lead-free NiPdAu. The ow- through package design
simpli es PCB layout.
Features
• Transient Protection to
s IEC 61000-4-2 (ESD) 25kV (Air), 15kV (Contact)
s IEC 61000-4-4 (EFT) 4kV (5/50ns)
s IEC 61000-4-5 (Lightning) 5A (8/20µs)
s ISO-10605 (ESD) 20kV (Air), 12kV (Contact)
• Quali ed to AEC-Q100, Grade 1
• Protects four High-Speed Data Lines
• Working Voltage: 5V
• Low Capacitance: 0.8 pF Maximum (I/O to GND)
• Dynamic Resistance: 0.43 Ohms (Typ)
• Solid-State Silicon-Avalanche Technology
Mechanical Characteristics
• SLP2510P8 Package
• Pb-Free, Halogen Free, RoHS/WEEE Compliant
• Nominal Dimensions: 2.5 x 1.0 x 0.58 mm
• Lead Finish: NiPdAu
• Molding Compound Flammability Rating: UL 94V-0
• Marking : Marking Code + Date Code
• Packaging : Tape and Reel
Applications
• Automotive Applications
• Industrial Equipment
• HDMI
• Digital Visual Interface
• MDDI Ports
• PCI Express
Nominal Dimension
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Nominal Dimensions in mm
RClamp0524PQ
Final Datasheet
Revision date
Rev 2.0
June 22, 2015
www.semtech.com
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Device Schematic
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1 of 10
Semtech






RClamp0524PQ Datasheet, Funktion
Applications Information
Pin Con guration
Figure 1 is an example of how to route the high speed
di erential traces through the RClamp0524PQ. The solid
line represents the PCB trace. The PCB traces are used to
connect the pin pairs for each line (pin 1 to pin 10, pin 2
to pin 9, pin 4 to pin 7, pin 5 to pin 6). For example, line
1 enters at pin 1 and exits at Pin 10 and the PCB trace
connects pin 1 and 10 together. This is true for lines
connected at pins 2, 4, and 5 also. Ground is connected
at pins 3 and 8. One large ground pad should be used in
lieu of two separate pads.
plenty of margin (98.3Ω at 1.79 ns).
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Figure 2 - TDR Measurement with 200ps risetime using
Semtech Evaluation Board
Figure 3 shows a typical HDMI 1.4 eye pattern at
1080p resolution. As shown there are no violations
of the eye pattern with RClamp0524PQ in the circuit.
The RClamp0524PQ may also be used to protect the
remaining lines (I2C, CEC, and hot plug).
Figure 1. Flow through Layout Using RClamp0524PQ
TDR Measurements for HDMI
The combination of low capacitance, small package, and
ow-through design means it is possible to use these
devices to meet the HDMI impedance requirements of
100 Ohms ±15% without any PCB board modi cation.
Figure 3 shows a typical impedance test result for a TDR
risetime of 200ps using a Semtech evaluation board with
100 Ohm traces throughout. Measurements were taken
using a TDR method as outlined in the HDMI Compliance
Test Speci cation (CTS). In each case, the device meets
the HDMI CTS requirement of 100 Ohm ±15% with
Figure 3 - HDMI 1.4 Eye Pattern with RClamp0524PQ
RClamp0524PQ
Final Datasheet
Revision Date
Rev 2.0
June 22, 2015
www.semtech.com
6 of 10
Semtech

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