PROTECTION PRODUCTS
1www.semtech.com
PRELIMINARY
PROTECTION PRODUCTS - EMIClampTM
EClamp2522P
USB Upstream Port Filter and TVS
For EMI Filtering and ESD Protection
Description Features
Pin Configuration
The EClampTM2522P is an easily implemented solution
for protection and termination of low speed or full
speed Universal Serial Bus (USB) ports. Each device will
provide termination, filtering, and ESD protection for
one upstream USB port on cellular phones and other
portable electronics. This state-of-the-art device utilizes
solid-state silicon-avalanche technology for superior
clamping performance and electrical characteristics.
Line termination is achieved with 22 Ohm series
resistors on both the D+ and D- USB lines. TVS diodes
are also included on each data line for ESD protection
in excess of ±15kV (air discharge) and ±8kV (contact
discharge) per IEC 61000-4-2, level 4. An additional
TVS diode connection is included for protection of the
voltage (VBus) bus. The 1.5k Ohm pull-up resistor is
included on one of the USB data lines to identify the
equipment as either a full-speed (connected to D+ line)
or low-speed (connected to D- line) device.
The EClamp2522P is in a 6-pin, RoHS compliant,
SLP1616P6 package. It measures 1.6 x 1.6 x
0.60mm. The leads are spaced at a pitch of 0.5mm
and are finished with lead-free NiPdAu. The small
package makes it ideal for use in portable electronics
such as cell phones and digital still cameras.
Mechanical Characteristics
Circuit Diagram
Applications
Bidirectional EMI/RFI filter with integrated TVS
for ESD protection
ESD protection to IEC 61000-4-2 (ESD) Level 4,
±15kV (air), ±8kV (contact)
TVS working voltage: 5.25V
Termination Resistor: 22 Ohms
Capacitance: 45pF (Max at VR = 0V)
Protection and filtering for one USB port
Solid-state technology
Revision 07/29/2007
SLP1616P6 6L package
RoHS/WEEE Compliant
Nominal Dimensions: 1.6 x 1.6 x 0.60 mm
Lead Finish: NiPdAu
Molding compound flammability rating: UL 94V-0
Marking : Marking code + date code
Packaging : Tape and Reel per EIA 481
USB Ports
Cellular Handsets
PDAs
PC Peripherals
MP3 Players
1
Gnd
2
3
6
5
4
DM In
DP In DP Out
VBus
DM Out
Vterm R
SLP1616P6 (Top View)
20pF 20pF
22
GND
1
2
34
5
6
22
20pF 20pF
1.5k
2 2007 Semtech Corp. www.semtech.com
PRELIMINARY
PROTECTION PRODUCTS
EClamp2522P
Maximum Ratings
Electrical Characteristics (T=25oC)
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3 2007 Semtech Corp. www.semtech.com
PRELIMINARY
PROTECTION PRODUCTS
EClamp2522P
Typical Characteristics
Typical Insertion Loss S21
ESD Clamping (+8kV Contact) ESD Clamping (-8kV Contact)
Note: Data is taken with a 10x attenuator Note: Data is taken with a 10x attenuator
Normalized Capacitance vs. Reverse Voltage
START . 030 MHz 3
STOP 000
.
000 000 MHz
CH1 S21 LOG 6 dB / REF 0 dB
1: -4.7448 dB
163.291 MHz
2: -19.581 dB
800.00 MHz
3: -21.137 dB
900.00 MHz
4: -17.702 dB
1.800 GHz
5: -15.929 dB
2.500 GHz
0 dB
-6 dB
-12 dB
-18 dB
-24 dB
-30 dB
-36 dB
1
GHz
100
MHz
3
GHz
10
MHz
1
MHz
1
2
3
4
5
-42 dB
-48 dB
Analog Crosstalk (Each Line)
START
.
030 MHz 3 STOP 000 . 000 000 MHz
CH1 S21 LOG 20 dB / REF 0 dB
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
1.1
012345
Reverse Voltage - VR (V)
CJ(VR) / CJ(VR=0)
f = 1 MHz
4 2007 Semtech Corp. www.semtech.com
PRELIMINARY
PROTECTION PRODUCTS
EClamp2522P
Figure 1 - Pin Identification and Configuration
(Top Side View)
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2
3
6
5
4
Device Connection
The EClamp2522P is designed to provide termination,
EMI filtering and ESD protection for one USB port. The
device is connected as follows:
1.1.
1.1.
1. Full-Speed Devices: For full-speed devices the
pull-up resistor is connected to the D+ line. Route
the D+ line from the connector to pin 2. Pin 5 is
connected to the D+ line of the IC. Route the D-
line from the connector to pin 3. Pin 4 is con-
nected to the D- line of the IC. Pin 1 is connected
to the voltage supply line (VBUS). Pin 6 is connected
to the 3.3 Volt supply. The ground connection is
made to the center tab. For best results, use
multiple vias to the ground plane to reduce para-
sitic inductance.
2.2.
2.2.
2. Low-Speed Devices::
::
: For low speed devices the
pull-up resistor is connected to the D- line. Route
the D- line from the connector to pin 2. Pin 5 is
connected to the D- line of the IC. Route the D+
line from the connector to pin 3. Pin 4 is con-
nected to the D+ line of the IC. Pin 1 is connected
to the voltage supply line (VBUS). Pin 6 is connected
to the 3.3 Volt supply. The ground connection is
made to the center tab. For best results, use
multiple vias to the ground plane to reduce para-
sitic inductance.
USB Port Design Considerations
The Universal Serial Bus (USB) specification requires
termination and filtering components for proper opera-
tion. In addition, an open USB socket is vulnerable to
hazardous ESD discharges in excess of 15kV. These
discharges can occur on the data lines or the voltage
bus. The EClamp2522P is an easily implemented
solution that is designed to meet the termination and
EMI filter requirements of the USB specification for low
speed and full speed devices. It also provides ESD
protection to IEC 61000-4-2, level 4.
USB line termination is achieved with series resistors
on both the D+ and D- lines. These resistors preserve
signal integrity by matching the cable impedance to
that of the differential driver. A 1.5kΩ pull-up resistor
is used to identify an upstream port on either the D+
(full speed devices) or the D- (low speed devices) data
line. TVS diodes provide ESD protection of both (D+
and D-) data lines and the voltage bus (VBUS). This
integrated solution simplifies design and requires
minimal board space.
5 2007 Semtech Corp. www.semtech.com
PRELIMINARY
PROTECTION PRODUCTS
EClamp2522P
Applications Information - Spice Model
EClamp2522P Spice Model
Line In Line Out
22Ω
D2
Vcc
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6 2007 Semtech Corp. www.semtech.com
PRELIMINARY
PROTECTION PRODUCTS
EClamp2522P
Land Pattern - SLP1616P6
Outline Drawing - SLP1616P6
.016 .022 .026 0.40 0.55 0.65
1.60
.063
E
AB
A1
SEATING
PLANE
C
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12
N
e
PIN 1
INDICATOR
(LASER MARK)
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E/2
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D1
A2
A
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1.701.50.067.059
1.50 1.70
.067.059
INCHES
.020 BSC
b.007
bbb
aaa
N
D1
L
e
D
.013
.041
DIM
A1
A2
A
MIN
0.00
.020
0.300.20.012 0.25.010
0.40
1.30
0.25
1.05
.004
.004
6
.013
.063
.047
.016
.051
0.09
0.09
6
0.33
1.60
1.20
0.50 BSC
MILLIMETERS
MAX
0.05
0.65
DIMENSIONS
MIN
0.00
NOM
(.006)
.023
.001
MAX
.002
.026
NOM
0.50
0.03
(0.15)
0.58
CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES).
COPLANARITY APPLIES TO THE EXPOSED PAD AS WELL AS THE TERMINALS.
NOTES:
2.
1.
E1
THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY.
CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR
NOTES:
1.
DIM
X
Y
P
G
C
MILLIMETERSINCHES
1.52
.012
.025
.035
.020
.060
0.30
0.63
0.50
0.89
DIMENSIONS
COMPANY'S MANUFACTURING GUIDELINES ARE MET.
2.15.085Z
B .051 1.30
.018F 0.45
X
Z
P
Y
G(C)
B
F
7 2007 Semtech Corp. www.semtech.com
PRELIMINARY
PROTECTION PRODUCTS
EClamp2522P
Contact Information
Semtech Corporation
Protection Products Division
200 Flynn Rd., Camarillo, CA 93012
Phone: (805)498-2111 FAX (805)498-3804
Marking Ordering Information
Tape and Reel Specification
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This is a lead-free RoHS/WEEE Compliant Device
EMIClamp and EClamp are marks of Semtech Corporation
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mm5.0
50.0±
01.±057.1
mm 50.0±5.3
mm mm4.2 1.0±0.4
mm
1.0±0.4
mm
50.0±0.2
mm mm4.0
mm0.8
mm3.0+
mm1.0-
Device Orientation in Tape
Pin 1 in upper left towards sprocket holes
2522P
XX
XX = Date Code
Pin 1 Location
