EClamp2357NQ
EMIClamp®
EMI Filter and ESD Protection
For SD Card Interfaces
PROTECTION PRODUCTS
Description
Features
The EClamp®2357NQ is a low pass filter array with
integrated TVS diodes. It is designed to suppress
unwanted EMI/RFI signals and provide electrostatic
discharge (ESD) protection in portable electronic
equipment. They have been optimized for protection of
touch screen displays, secure digital (SD) card interfaces,
and color LCD panels in cellular phones and other
portable electronics.
• EMI/RFI filter with integrated ESD protection
• ESD protection to IEC 61000-4-2 (ESD) Level 4, ±20kV
(air), ±12kV (contact)
• Filter performance: >30dB attenuation at 1.8GHz
• TVS working voltage: 2.5V
• Resistor: 100Ω +/− 15%
• Capacitance: 10pF typ. (VR = 0V for non filter pins)
• EMI & ESD protection for six lines
• Dedicated ESD protection for four lines
• Solid-state technology
• AEC-Q100 Grade 1 Qualified
The device consists of six π filter circuits comprised of
TVS diodes for ESD protection, and a resistor capacitor
network for EMI/RFI filtering. A series resistor value of
100Ω and a component capacitance value of 10pF are
used to achieve 20dB minimum attenuation from 1.0GHz
to 3GHz. The device also includes 4 discrete TVS diodes
for dedicated ESD protection. All of the TVS diodes
provide effective suppression of ESD voltages in excess
of ±20kV (air discharge) and ±12kV (contact discharge)
per IEC 61000-4-2, level 4.
The EClamp2357NQ is qualified to AEC-Q100 Grade 1 for
automotive use.
Package Dimensions
Mechanical Characteristics
•
•
•
•
•
•
•
SLP3030P16 package
Pb-Free, Halogen Free, RoHS/WEEE compliant
Nominal Dimensions: 3.0 x 3.0 x 0.6 mm
Lead Pitch: 0.5mm
Lead Finish: Matte Tin
Marking: Marking Code
Packaging: Tape and Reel per EIA 481
Applications
•
•
•
•
•
•
Touch Screen Display Interfaces
Secure Digital (SD) Memory Card Interfaces
Multimedia Card Interfaces (MCI)
Color LCD Panel Protection
Cell Phone Handsets and Accessories
Automotive Applications
Schematic & Pin Configuration
100Ω
IN
3.00
10pF
16
OUT
10pF
1
0.30
3.00
GND
6x {R = 100Ω, C = 10pF (max)}
IN/OUT
IN/OUT
0.50
0.60
GND
Nominal Dimensions (in mm)
EClamp2357NQ
Final Datasheet
Sep 20, 2017
Rev 2.0
EClamp2357NQ-1-R0
2x 5V TVS
www.semtech.com
Page 1
Semtech
Absolute Maximum Ratings
Rating
Symbol
Value
Units
ESD per IEC 61000-4-2 (Contact)(1)
ESD per IEC 61000-4-2 (Air)(1)
VESD
±12
±20
kV
Junction Temperature
TJ
125
O
Operating Temperature
TOP
-40 to +125
O
Storage Temperature
TSTG
-55 to +150
O
C
C
C
Electrical Characteristics (T=25OC unless otherwise specified)
Parameter
Symbol Conditions
Reverse Stand-Off Voltage
VRWM
Min. Typ.
-40OC to 125OC, any I/O to GND
Max. Units
2.5
V
10
V
0.5
μA
100
115
Ω
VR = 0V
20
22
VR = 2.5V
12
15
Reverse Breakdown Voltage VBR
It = 1mA, any I/O to GND
-40 C to 125 C
Reverse Leakage Current
IR
VRWM = 2.5V, any I/O to GND
-40OC to 125OC
Total Series Resistance
R
Each line, T = -40 OC to 125 OC
Total Capacitance
CIN
Input to Gnd, each Line, f = 1 MHz
O
O
6
85
8
pF
Notes:
(1): ESD Gun return path to Ground Reference Plane (GRP)
EClamp2357NQ
Final Datasheet
Sep 20, 2017
Rev 2.0
www.semtech.com
Page 2
Semtech
Typical Characteristics
Typical Insertion Loss -S21 (Each Filter)
Analog Crosstalk (Each Line)
0
0
-10
TA = 25OC
Filter Input to Output
Crosstalk - CT (dB)
Insertion Loss -IL (dB)
TA = 25OC
-20
-20
-30
-40
-60
-80
-40
-100
AR_ILvF
CTvF
-50
10
100
1000
Frequency (MHz)
10000
-120
10
ESD Clamping (+8kV Contact per IEC 61000-4-2)
150
Frequency (MHz)
1000
10000
ESD Clamping (-8kV Contact per IEC 61000-4-2)
50
TA = 25OC
Corrected for 40dB attenuation.
Measured with 50Ω, 40dB attenuator;
50Ω Scope Input Impedance.
Clamping Voltage - VC (V)
100
Clamping Voltage - VC (V)
100
50
0
-50
TA = 25OC
Corrected for 40dB attenuation.
Measured with 50Ω, 40dB attenuator;
50Ω Scope Input Impedance.
-100
0
AR_ESD_+8
AR_ESD_-8
-150
-50
-10
10
30
Time (ns)
50
-10
70
10
Capacitance vs. Temperature
30
Time (ns)
50
70
Series Resistance vs. Temperature
25
105
Test Current = 1mA
104
No Filter VR = 0V
No Filter VR = 2.5V
Series Resistance - RS (Ω)
Junction Capacitance - CJ (pF)
20
Filter VR = 0V
15
Filter VR = 2.5V
10
103
102
101
5
AR_RSvT
AR_CAPvT
100
0
-50
0
EClamp2357NQ
Final Datasheet
Sep 20, 2017
Rev 2.0
50
Temperature (OC)
100
150
-50
www.semtech.com
0
50
Temperature (OC)
100
150
Page 3
Semtech
Typical Characteristics (Continued)
Breakdown Voltage vs. Temperature
Capacitance vs. Reverse Voltage
25
8.0
IBR = 1mA
to GND
IAny= Pin
1mA
TA = 25OC
f = 1 MHz
BR
Pin 6, 8, 13 or 15 to GND
Breakdown Voltage - VBR (V)
7.8
20
Capacitance - CJ(pF)
7.6
7.4
7.2
15
Filter Pins
Non Filter Pins
10
5
AR_VBRvT
AR_CAPvV
7.0
-50
0
50
Temperature (OC)
100
0
150
0.0
0.5
1.0
1.5
2.0
2.5
Reverse Voltage - V (V)
TLP Characteristics (Positive)
TLP Characteristics (Negative)
5
30
TA = 25OC
TLP Parameters:
tp = 100ns; tr = 200ps
RDYN = 0.466Ω
Best Fit 4A to 16A
25
-5
15
TLP Current (A)
TLP Current (A)
20
TA = 25OC
TLP Parameters:
tp = 100ns; tr = 200ps
RDYN = 0.248Ω
Best Fit 4A to 16A
0
10
5
-10
-15
-20
-25
0
AR_TLP+
AR_TLP-
-30
-5
0
5
10
15
TLP Voltage (V)
20
25
-12
-10
-8
-6
TLP Voltage (V)
-4
-2
0
Leakage Current vs. Temperature
Leakage Current - IR (nA)
40
30
VR = 3.3V
Pin to
6, 8,
GND
13 or 15 to GND
Filter Pins are
1, 2, 3 ,4, 5, 7, 9, 10,
11, 12, 14 and 16
Non-Filter Pins are:
6, 8, 13 and 15.
20
Non-Filter Pins
Filter Pins
10
AR_IRvT
0
-50
0
EClamp2357NQ
Final Datasheet
Sep 20, 2017
Rev 2.0
50
Temperature (OC)
100
150
www.semtech.com
Page 4
Semtech
Application Information
Device Connection
The EClamp2357NQ is comprised of six circuits each
consisting of a low pass filter for EMI/RFI suppression
and dual TVS diodes for ESD protection. It also includes
4 lines of TVS diodes for ESD protection of power lines
or high speed I/O lines. The device is housed in a 16-pin
Quad Flat No-Lead (QFN) package. Electrical connection
is made via 16 pins located at the bottom of the device.
A center tab serves as the ground connection. Pin
connections are noted in the table to the right. The
device is designed for easy PCB routing as shown in the
application examples. All path lengths should be kept
as short as possible to minimize the effects of parasitic
inductance in the board traces.
Matte Tin Lead Finish
Matte tin has become the industry standard lead-free
replacement for SnPb lead finishes. A matte tin finish is
composed of 100% tin solder with large grains. Since
the solder volume on the leads is small compared to the
solder paste volume that is placed on the land pattern of
the PCB, the reflow profile will be determined by the
requirements of the solder paste. Therefore, these
devices are compatible with both lead-free and SnPb
assembly techniques. In addition, unlike other lead-free
compositions, matte tin does not have any added alloys
that can cause degradation of the solder joint.
Pin Identification and Configuration (Top Side View)
Top View
15 14 13
16
1
12
2
11
3
10
4
9
5
6
7
8
EClamp2357NQ-3-R0
Pin
Identification
3, 4, 5, 7, 9, 10
Input EMI/ESD Protected Lines
1, 2, 11, 12, 14, 16
Output EMI/ESD Protected Lines
6, 8, 13, 15
Input/Output ESD Protected Lines
Center Tab
Ground
Pin Configuration and Schematic
3
2
7
14
LOW PASS FILTER
GND
LOW PASS FILTER
GND
4
1
GND
9
12
LOW PASS FILTER
GND
LOW PASS FILTER
GND
5
16
GND
11
LOW PASS FILTER
GND
6
15
GND
GND
10
LOW PASS FILTER
GND
GND
GND
GND
8
13
GND
EClamp2357NQ-4-R0
EClamp2357NQ
Final Datasheet
Sep 20, 2017
Rev 2.0
www.semtech.com
Page 5
Semtech
Application Information
EClamp2357NQ SD Memory
DAT2
DAT2
DAT3
DAT3
SD
Controller
CMD
3
4
VCC
CLK
2
1
5
16
6
15
GND
7
SD_DET
14
8
DAT0
13
9
10
11
12
DAT1
CMD
VCC
CLK
SD_DET
DAT0
SD Memory Connector
Baseband
Controller
DAT1
EClamp2357NQ-5-R0
Key
Top Side Trace
Bottom Side Trace
Via
3
2
1
16
6
15
GND
7
14
8
13
9
10
11
12
Key:
Top Side Trace
Bottom Side Trace
Via
LCD Module Connector
4
5
4-Wire Touchscreen
Connector
Baseband Controller
EClamp2357NQ LCD and Touch Pad
EClamp2357NQ-6-R0
EClamp2357NQ
Final Datasheet
Sep 20, 2017
Rev 2.0
www.semtech.com
Page 6
Semtech
Outline Drawing - SLP3030P16
A
D
B
PIN 1
INDICATOR
(LASER MARK)
DIM
A
A1
A2
b
D
D1
E
E1
e
L
N
aaa
bbb
E
A2
A
aaa C
A1
C
D1
SEATING
PLANE
DIMENSIONS
MILLIMETERS
MIN NOM MAX
0.55 0.60 0.65
0.00 0.02 0.05
(0.15) 0.20 0.25 0.30
2.90 3.00 3.10
1.40 1.50 1.60
2.90 3.00 3.10
1.40 1.50 1.60
0.50 BSC
0.35 0.40 0.45
16
0.08
0.10
e
e/2
R0.20
LxN
E/2
0.450
2
1
N
bxN
D/2
bbb
C A B
NOTES:
1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES).
2. COPLANARITY APPLIES TO THE EXPOSED PAD AS WELL AS THE TERMINALS.
Land Pattern - SLP3030P16
H
(C)
DIMENSIONS
DIM MILLIMETERS
G
K
Z
Y
P/2
P
C
G
H
K
P
X
Y
Z
(2.80)
2.10
1.60
1.60
0.50
0.30
0.70
3.50
X
NOTES:
1. THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY.
CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR
COMPANY'S MANUFACTURING GUIDELINES ARE MET.
2. DO NOT PLACE VIAS BETWEEN THE CORNER LEADS INSIDE THE
3X3MM PACKAGE FOOTPRINT.
3. THERMAL VIAS IN THE LAND PATTERN OF THE EXPOSED PAD
SHALL BE CONNECTED TO A SYSTEM GROUND PLANE.
FAILURE TO DO SO MAY COMPROMISE THE THERMAL AND/OR
FUNCTIONAL PERFORMANCE OF THE DEVICE.
EClamp2357NQ
Final Datasheet
Sep 20, 2017
Rev 2.0
www.semtech.com
Page 7
Semtech
Marking Code
16
1
2
3
4
15
14
13
2357N
YYWW
5
6
7
13
14
15
16
12
12
11
11
2
10
10
3
9
9
4
1
8
Top View Showing
Device Marking
8
7
6
5
Bottom View Showing
Pin1 Identifier
EClamp2357NQ-8-R0
Notes:
1. YYWW = Alphanumeric character Date Code
2. Pin 1 indicated by “Mouse Bite“ on the ground pad
Tape and Reel Specification - Plastic Tape
2357N
YYWW
Pin 1 Location
(Toward Sprocket Holes)
2357N
YYWW
User Direction of Feed
Ordering Information
Part Number
Qty per Reel
EClamp2357NQTLT 3000
Reel Size
13 Inch
EMIClamp and EClamp are trademarks of Semtech Corporation.
EClamp2357NQ
Final Datasheet
Sep 20, 2017
Rev 2.0
www.semtech.com
Page 8
Semtech
IMPORTANT NOTICE
Information relating to this product and the application or design described herein is believed to be reliable, however such information is provided as a
guide only and Semtech assumes no liability for any errors in this document, or for the application or design described herein. Semtech reserves the right
to make changes to the product or this document at any time without notice. Buyers should obtain the latest relevant information before placing orders
and should verify that such information is current and complete. Semtech warrants performance of its products to the specifications applicable at the time
of sale, and all sales are made in accordance with Semtech’s standard terms and conditions of sale.
SEMTECH PRODUCTS ARE NOT DESIGNED, INTENDED, AUTHORIZED OR WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT APPLICATIONS, DEVICES
OR SYSTEMS, OR IN NUCLEAR APPLICATIONS IN WHICH THE FAILURE COULD BE REASONABLY EXPECTED TO RESULT IN PERSONAL INJURY, LOSS OF LIFE
OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. INCLUSION OF SEMTECH PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE UNDERTAKEN
SOLELY AT THE CUSTOMER’S OWN RISK. Should a customer purchase or use Semtech products for any such unauthorized application, the customer shall
indemnify and hold Semtech and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs damages and attorney
fees which could arise.
The Semtech name and logo are registered trademarks of the Semtech Corporation. All other trademarks and trade names mentioned may be marks and
names of Semtech or their respective companies. Semtech reserves the right to make changes to, or discontinue any products described in this document
without further notice. Semtech makes no warranty, representation or guarantee, express or implied, regarding the suitability of its products for any
particular purpose. All rights reserved.
© Semtech 2015
Contact Information
Semtech Corporation
200 Flynn Road, Camarillo, CA 93012
Phone: (805) 498-2111, Fax: (805) 498-3804
www.semtech.com
EClamp2357NQ
Final Datasheet
Sep 20, 2017
Rev 2.0
Page 9
Semtech