UM4701 Datasheet, PDF (1/11 Pages) Union Semiconductor, Inc. – Multi-line ESD/EMI Protection for Color LCD Interfaces

UM4701/4711/8701/8711
Multi-line ESD/EMI Protection for Color LCD Interfaces
UM4701 DFN8 2.0×2.0
UM4711 DFN8 1.7×1.3
UM8701 DFN16 4.0×1.6
UM8711 DFN16 3.3×1.3
General Description
The UM4701/UM4711/UM8701/UM8711 is a (L-C) low pass filter array with integrated TVS
diodes. It is designed to suppress unwanted EMI signals and provide electrostatic discharge (ESD)
protection in portable electronic equipment. This device utilizes solid-state silicon-avalanche
technology for superior clamping performance and DC electrical characteristics. They have been
optimized for protection of color LCD and camera lines in cellular phones and other portable
electronics.
The device consists of identical circuits comprised of TVS diodes for ESD protection, and a 5
pole inductor-capacitor network for EMI filtering. A typical inductor value of 19nH and a
capacitor value of 12pF are used to achieve 30dB minimum attenuation from 800MHz to 2.7GHz.
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 UM4701 is in a RoHS compliant DFN8 2.0×2.0 package, the UM4711 is in a RoHS compli-
ant DFN8 1.7×1.3 package, the UM8701 is in a RoHS compliant DFN16 4.0×1.6 package and the
UM8711 is in a RoHS compliant DFN16 3.3×1.3 package. The leads are finished with lead-free.
The small package makes it ideal for use in portable electronics such as cell phones, digital still
cameras, and PDAs.
Applications
z Color LCD Protection
z Cell Phone CCD Camera Lines
z Clamshell Cell Phones
Features
z Bidirectional EMI Filter with Integrated TVS
for ESD Protection
z ESD Protection to IEC 61000-4-2 (ESD)
Level 4, ±15kV (air), ±8kV (contact)
z Filter performance: 30dB minimum
attenuation from 800MHz to 2.7GHz
z TVS Working Voltage: 5V
z Inductor: 19nH (Typical)
z Capacitors: 12pF (Typical at V_R = 2.5V)
z Protection and filtering for multi lines
UM4701/4711: four lines
UM8701/8711: eight lines
z Solid-state Technology
Ordering Information
Part
Number
UM4701
UM4711
UM8701
UM8711
Working
Voltage
5.0V
5.0V
5.0V
5.0V
Packaging
Type
DFN8 2.0×2.0
DFN8 1.7×1.3
DFN16 4.0×1.6
DFN16 3.3×1.3
Channel
4
4
8
8
Marking
Code
ABB
AR
8701
8711
Shipping Qty
3000pcs /7Inch
Tape & Reel
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http://www.union-ic.com Rev.01 Aug.2012
1/11