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PDF EClamp2357NQ Data sheet ( Hoja de datos )
| Número de pieza | EClamp2357NQ | |
| Descripción | EMI Filter and ESD Protection | |
| Fabricantes | Semtech | |
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PROTECTION PRODUCTS - EMIClamp®
Description
The EClamp®2357NQ is a low pass filter array with inte-
grated 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 dis-
plays, secure digital (SD) card interfaces, and color LCD
panels in cellular phones and other portable electronics.
The device consists of six pi filter circuits comprised of
TVS diodes for ESD protection, and a resistor capaci-
tor 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 ±15kV (air discharge) and ±8kV (contact
discharge) per IEC 61000-4-2, level 4.
The EClamp2357NQ is qualified to AEC-Q100 Grade 1
for Automotive use.
EClamp2357NQ
EMI Filter and ESD Protection
for Secure Digital Card Interfaces
Features
u EMI/RFI filter with integrated ESD protection
u ESD protection to IEC 61000-4-2 (ESD) Level4,
±15kV (air), ±8kV (contact)
u Filter performance: >30dB attenuation at 1.8GHz
u TVS working voltage: 5V
u Resistor: 100Ω +/− 15%
u Component Capacitance: 10pF (VR = 0V)
u EMI & ESD protection for six lines
u Dedicated ESD protection for four lines
u Solid-state technology
u AEC-Q100 Grade 1 Qualified.
Mechanical Characteristics
u 16 pin QFN
u RoHS/WEEE Compliant
u Nominal Dimensions: 3.0 x 3.0 x 1.0 mm
u Lead Pitch: 0.5mm
u Lead Finish: Matte Tin
u Marking: Marking Code
u Packaging: Tape and Reel per EIA 481
Package Dimensions
3.00
16
1
3.00
0.30
0.50
Applications
u Touch Screen Display Interfaces
u Secure Digital (SD) Memory Card Interfaces
u Multimedia Card Interfaces (MCI)
u Color LCD Panel Protection
u Cell Phone Handsets and Accessories
u Automotive Applications.
Schematic & Pin Configuration
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EClamp2357NQ-2-R1
0.60
16 Pin QFN (Top Side View)
Nominal Dimensions (in mm)
Revision 6/24/2013
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1 page  
EClamp2357NQ
PROTECTION PRODUCTS
Applications 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 connec-
tion 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 re-
quirements of the solder paste. Therefore, these devices
are compatible with both lead-free and SnPb assembly
techniques. In addition, unlike other lead-free composi-
tions, matte tin does not have any added alloys that can
cause degradation of the solder joint.
Pin Identification and Configuration (Top Side View)
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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
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2013 Semtech Corporation.
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| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet EClamp2357NQ.PDF ] | |
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