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Semtech Corporation - Emi Filter And Esd Protection

Numéro de référence EClamp2340C
Description Emi Filter And Esd Protection
Fabricant Semtech Corporation 
Logo Semtech Corporation 





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EClamp2340C fiche technique
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PROTECTION PRODUCTS - EMIClampTM
Description
The EClampTM2340C 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. This state-of-the-art device utilizes solid-
state silicon-avalanche technology for superior clamp-
ing performance and DC electrical characteristics.
They have been optimized for protection of color
LCD panels in cellular phones and other portable
electronics.
The device consists of ten identical circuits comprised
of TVS diodes for ESD protection, and a resistor -
capacitor network for EMI/RFI filtering. A series
resistor value of 100and a capacitance value of
18pF is used to achieve 20dB minimum attenuation
from 800MHz to 3GHz. Each line features two stages
of TVS diode protection. 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 device is a 25-bump, 0.5mm pitch flip chip array
with a 5x5 bump grid. It measures 2.6 x 2.6 x
0.65mm. The solder bumps have a nominal diameter
of 0.315mm.
Circuit Diagram
EClamp2340C
EMI Filter and ESD Protection
for Color LCD Interface
PRELIMINARY
Features
‹ Flip Chip bidirectional EMI/RFI filter with
integrated ESD protection
‹ ESD protection to IEC 61000-4-2 (ESD) Level4,
+/-15kV (air), +/-8kV (contact)
‹ Filter performance: 20dB minimum attenuation
800MHz to 3GHz
‹ TVS working voltage: 5V
‹ Resistor: 100 Ohms
‹ Input Capacitance: 18pF (VR = 2.5VDC)
‹ Protection and filtering for ten lines
‹ Solid-state technology
Mechanical Characteristics
‹ JEDEC MO-211, Variation BF, 0.50 mm pitch flip
chip
‹ Nominal Dimensions: 2.6 x 2.6 x 0.65 mm
‹ Bump Diameter: 315+/-20 µm
‹ Non-conductive top side coating
‹ Marking : Mark code, lot code, orientation mark
‹ Packaging : Tape and Reel per EIA 481
Applications
‹ Color LCD Panel Protection
‹ Cell Phone CCD Camera Lines
‹ Personal Digital Assistants (PDA’s)
PIN Configuration
LOW PASS FILTER
CIN = 18pF
R = 100 Ohms
Circuit 10x
Revision 4/19/2004
5 x 5 Grid Flip Chip (Ball Side View)
1 www.semtech.com

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