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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

compliant 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

Features



Color LCD Protection



Cell Phone CCD Camera Lines



Clamshell Cell Phones



Bidirectional EMI Filter with Integrated TVS

for ESD Protection



ESD Protection to IEC 61000-4-2 (ESD)

Level 4, ±15kV (Air), ±8kV (Contact)



Filter Performance: 30dB Minimum

Attenuation from 800MHz to 2.7GHz



TVS Working Voltage: 5V



Inductor: 19nH (Typical)





Protection and Filtering for Multi Lines

UM4701/4711: Four Lines

UM8701/8711: Eight Lines



Solid-State Technology

Ordering Information

Part

Number

Working

Voltage

Packaging Type

Channel

Marking

Code

Shipping Qty

UM4701

5.0V

DFN8 2.0×2.0

4

ABB

3000pcs /7Inch

Tape & Reel

UM4711

5.0V

DFN8 1.7×1.3

4

AR

UM8701

5.0V

DFN16 4.0×1.6

8

8701

UM8711

5.0V

DFN16 3.3×1.3

8

8711