
Union Semiconductor, Inc.
General Description
The UM4501/UM4511/UM6501/UM8501/UM8511 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 signal lines in cellular phones and other portable electronics.
FEATUREs
● 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: 19dB Minimum
Attenuation from 800MHz to 2.7GHz
● TVS Working Voltage: 5V
● Inductor: 17nH (Typical)
● Capacitors: 12pF (Typical at VR=2.5V)
● Protection and Filtering for Multi Lines
UM4501/4511: Four Lines
UM6501: Six Lines
UM8501/8511: Eight Lines
APPLICATIONs
● Signal Lines Protection
● Cell Phone CCD Camera Lines
● Clamshell Cell Phones