RClamp0584J Datasheet

RClamp0584J
Ultra Low Capacitance TVS Array
PROTECTION PRODUCTS - RailClamp®
Description
PRELIMINARY
Features
RailClamp TVS arrays are ultra low capacitance ESD
protection devices designed to protect high speed data
interfaces. This series has been specifically 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).
The RClamp®0584J has a typical capacitance of only
0.25pF between I/O pins. This allows it to be used on
circuits operating in excess of 3GHz without signal
attenuation. It may be used to meet the ESD immunity
requirements of IEC 61000-4-2. Each device is designed to protect four lines (two differential pairs).
The RClamp0584J is in a 10-pin SLP2710P8 package.
It measures 2.7 x 1.0 with a nominal height of 0.5mm.
The leads are spaced at a pitch of 0.5mm and are finished with lead-free NiPdAu. It is designed for easy PCB
layout by allowing the traces to run straight through the
device. The combination of small size, low capacitance,
and high level of ESD protection makes this device a
flexible solution for applications such as HDMI,
DisplayPortTM, MDDI, and eSATA interfaces.
®
‹ ESD protection for high-speed data lines to
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IEC 61000-4-2 (ESD) ±18kV (air), ±12kV (contact)
IEC 61000-4-5 (Lightning) 5A (8/20μs)
IEC 61000-4-4 (EFT) 40A (5/50ns)
Package design optimized for high speed lines
Flow-Through design
Protects four I/O lines
Low capacitance: 0.25pF typical (I/O to I/O)
Low clamping voltage
Low operating voltage: 5V
Solid-state silicon-avalanche technology
Mechanical Characteristics
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SLP2710P8 10-pin package (2.7 x 1.0 x 0.5mm)
Pb-Free, Halogen Free, RoHS/WEEE Compliant
Lead Pitch: 0.5mm
Lead finish: NiPdAu
Marking: Marking Code
Packaging: Tape and Reel
Applications
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Dimensions
HDMI 1.3 and HDMI 1.4
USB 3.0
Digital Visual Interface (DVI)
DisplayPortTM Interface
LVDS Interfaces
PCI Express
eSATA Interfaces
Circuit Diagram
2.70
0.40
1
2
1.00
Pin 1
0.60
Pin 2
Pin 4
Pin 5
0.20
0.50
3, 8
0.50
Nominal Dimensions in mm
Revision 5/3/2011
4-Line Protection
1
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RClamp0584J
PRELIMINARY
PROTECTION PRODUCTS
Absolute Maximum Rating
R ating
Symbol
Value
Units
Peak Pulse Power (tp = 8/20μs)
Pp k
75
Watts
Peak Pulse Current (tp = 8/20μs)
IP P
5
A
ESD p er IEC 61000-4-2 (Air)
ESD p er IEC 61000-4-2 (Contact)
VESD
+/- 18
+/- 12
kV
TJ
-55 to +125
°C
TSTG
-55 to +150
°C
Op erating Temp erature
Storage Temp erature
Electrical Characteristics (T=25oC)
Parameter
Symbol
Conditions
Reverse Stand-Off Voltage
VRWM
Any I/O to GN D
Reverse Breakdown Voltage
V BR
It = 1mA,
Any I/O to GN D
Reverse Leakage Current
IR
VRWM = 5.0V,
Any I/O to GN D
Clamp ing Voltage
VC
Clamp ing Voltage
Junction Cap acitance
© 2011 Semtech Corp.
Maximum
Units
5
V
8
11
V
0.005
0.100
μA
IPP = 1A, tp = 8/20μs
Any I/O to GN D
12
V
VC
IPP = 5A, tp = 8/20μs
Any I/O to GN D
15
V
Cj
VR = 0V, f = 1MHz,
Any I/O to GN D
0.45
0.60
pF
VR = 0V, f = 1MHz,
Between I/O p ins
0.25
0.4
pF
2
Minimum
6.5
Typical
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RClamp0584J
PRELIMINARY
PROTECTION PRODUCTS
Typical Characteristics
Non-Repetitive Peak Pulse Power vs. Pulse Time
Power Derating Curve
10
110
% of Rated Power or IPP
Peak Pulse Power - P PP (kW)
100
1
0.1
90
80
70
60
50
40
30
20
10
0
0.01
0.1
1
10
0
100
25
50
75
100
125
150
Ambient Temperature - TA (oC)
Pulse Duration - tp (us)
Pulse Waveform
Clamping Voltage vs. Peak Pulse Current
(Between any I/O and Ground)
110
Waveform
Parameters:
tr = 8µs
td = 20µs
90
80
Percent of I
PP
70
20
18
Clamping Voltage -VC (V)
100
e-t
60
50
40
td = IPP/2
30
20
10
16
14
12
10
8
6
Waveform
Parameters:
tr = 8µs
td = 20µs
4
2
0
0
0
5
10
15
20
25
0
30
1
2
3
4
5
6
Peak Pulse Current - IPP (A)
Time (µs)
ESD Clamping (Pin 1, 2, 3, or 4 to GND)
(+8kV Contact per IEC 61000-4-2)
Normalized Capacitance vs. Reverse Voltage
2
f = 1MHz
1.8
1.6
CJ(VR) / CJ(VR=0)
1.4
1.2
1
0.8
0.6
0.4
0.2
0
0
1
2
3
Reverse Voltage - VR (V)
4
5
Note: Data is taken with a 10x attenuator
© 2011 Semtech Corp.
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RClamp0584J
PRELIMINARY
PROTECTION PRODUCTS
Typical Characteristics (Con’t)
Insertion Loss S21 - I/O to I/O
© 2011 Semtech Corp.
Insertion Loss S21 - I/O to GND
4
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RClamp0584J
PRELIMINARY
PROTECTION PRODUCTS
Applications Information
Design Recommendations for HDMI Protection
Adding external ESD protection to HDMI ports can be
challenging. First, ESD protection devices have an
inherent junction capacitance. Furthermore, adding
even a small amount of capacitance will cause the
impedance of the differential pair to drop. Second,
large packages and land pattern requirements cause
discontinuities that adversely affect signal integrity.
The RClamp0584J is specifically designed for
protection of high-speed interfaces such as HDMI.
They present <0.3pF capacitance between the pairs
while being rated to handle >±8kV ESD contact
discharges (>±15kV air discharge) as outlined in IEC
61000-4-2. Each device is in a leadless SLP package
that is less than 1.1mm wide. They are designed such
that the traces flow straight through the device. The
narrow package and flow-through design reduces
discontinuities and minimizes impact on signal integrity.
This becomes even more critical as signal speeds
increase.
10
9
GND
7
6
1
2
GND
4
5
Pin
Identification
1, 2, 4, 5
Input Lines
6, 7, 9, 10
Output Lines
(No Internal Connection)
3, 8
Ground
Figure 1 - SLP2710P8 Pin Configuration (Top View)
Pin Configuration
Figure 1 is an example of how to route the high speed
differential traces through the RClamp0584J. 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.
TDR Measurements for HDMI
The combination of low capacitance, small package, and
flow-through design means it is possible to use these
devices to meet the HDMI impedance requirements of
100 Ohms ±15% without any PCB board modification.
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 Specification (CTS). As
shown, the device meets the HDMI CTS requirement of
100 Ohm ±15% with plenty of margin.
© 2011 Semtech Corp.
Figure 2 - Flow through Layout Using
RClamp0584J
5
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RClamp0584J
PRELIMINARY
PROTECTION PRODUCTS
Applications Information
Figure 3 shows a typical HDMI 1.3 eye pattern at
1080p resolution. As shown there are no violations of
the eye pattern with RClamp0584J in the circuit. The
RClamp0506T can be used to protect the remaining
lines (I2C, CEC, hot plug, etc.).
Layout Guidelines for Optimum ESD Protection
Good circuit board layout is critical not only for signal
integrity, but also for effective suppression of ESD induced transients. For optimum ESD protection, the
following guidelines are recommended:
z Place the device as close to the connector as possible. This practice restricts ESD coupling into
adjacent traces and reduces parasitic inductance.
z The ESD transient return path to ground should be
kept as short as possible. Whenever possible, use
multiple micro vias connected directly from the device
ground pad to the ground plane.
z Avoid running critical signals near board edges.
X-axis
Y-axis
1.79
98.3
(nsec)
(Ohm)
Figure 2 - TDR Measurement with 200ps risetime
using Semtech Evaluation Board
Figure 3 - Typical HDMI 1.3 Eye Pattern (1080p)
with RClamp0584J
© 2011 Semtech Corp.
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RClamp0584J
PRELIMINARY
PROTECTION PRODUCTS
Outline Drawing - SO-8
Outline
SLP2710P8
A
D
DIMENSIONS
MILLIMETERS
MIN NOM MAX
B
DIM
E
PIN 1
INDICATOR
(LASER MARK)
A
SEATING
PLANE
aaa C
A1
C
b1xN
bbb
C A B
A2
R0.125
0.47 0.50 0.53
0.00 0.03 0.05
(0.13)
0.15 0.20 0.25
0.35 0.40 0.45
2.60 2.70 2.80
0.90 1.00 1.10
0.50 BSC
0.60 BSC
0.30 0.38 0.43
8
0.08
0.10
2
1
E/2
A
A1
A2
b
b1
D
E
e
e1
L
N
aaa
bbb
LxN
2X R0.075
7 PLACES
N
e1
bxN
e
NOTES:
bbb
C A B
D/2
1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES).
Land Pattern - SLP2710P8
P1
P
DIMENSIONS
DIM
C
G
P
P1
X
X1
Y
Y1
Z
Y
Z (C)
(Y1)
G
X
X1
INCHES
(.034)
.008
.020
.024
.008
.016
.027
(.061)
.061
MILLIMETERS
(0.875)
0.20
0.50
0.60
0.20
0.40
0.675
(1.55)
1.55
NOTES:
1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES).
2. THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY.
CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR
COMPANY'S MANUFACTURING GUIDELINES ARE MET.
© 2011 Semtech Corp.
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RClamp0584J
PRELIMINARY
PROTECTION PRODUCTS
Marking Codes
Ordering Information
0584J
PIN 1
INDICATOR
YYWW
Part Number
Number
of Lines
Qty per
Reel
Reel
Size
RClamp0584J.TCT
4
3000
7 Inch
RailClamp and RClamp are trademarks of Semtech Corporation.
YYWW = Date Code
Tape and Reel Specification
Pin 1 Location
User Direction of feed
Device Orientation in Tape
Part Number
RClamp 0584J
A0
1.21 +/-0.10 mm
Tape
Width
B, (Max)
D
8 mm
4.2 mm
1.5 + 0.1 mm
- 0.0 mm )
B0
K0
2.91 +/-0.10 mm
D1
E
0.5 mm
±0.05
1.750±.10
mm
0.66 +/-0.10 mm
F
K
(MAX)
P
P0
P2
T(MAX)
3.5±0.05
mm
2.4 mm
4.0±0.1
mm
4.0±0.1
mm
2.0±0.05
mm
0.4 mm
W
8.0 mm
+ 0.3 mm
- 0.1 mm
Contact Information
Semtech Corporation
Protection Products Division
200 Flynn Road, Camarillo, CA 93012
Phone: (805)498-2111 FAX (805)498-3804
© 2011 Semtech Corp.
8
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