Ultra-Low-Capacitance EMI Filters from STMicroelectronics Provide Excellent Multi-line Attenuation PerformanceLow line capacitance makes new filters ideal for high-speed data lines in mobile phones, computers, and communications systems
Geneva / 02 Jun 2005
June 2, 2005 – STMicroelectronics (NYSE: STM), a leader
in IPAD (Integrated Passives and Discretes) technology, has introduced
two low-capacitance EMI-filter and electrostatic-discharge (ESD) protection
chips designed to suppress EMI/RFI* noise in sensitive, high-volume equipment
such as LCD screens and cameras in mobile phones, communication systems,
computers and printers, and microcontroller boards. These four- and six-line
flip-chip devices provide high-efficiency EMI filtering, with ultra-low
line capacitance that makes them ideal for use on high-speed data lines.
The new devices offer the best trade-off on the market between line capacitance and attenuation. In addition they provide ESD protection against surges up to 15kV, meeting the IEC61000-4-2 level 4 specification for ESD immunity. Attenuation is -40dB at 900MHz, while input capacitance is typically just 16pF at the normal 3V operating voltage. A low 100ohm series resistance makes the filters suitable for camera applications.
Flip-chip packaging enables devices of the same size as the die, leading to very low board-area requirement. Their overall dimensions are 1.92 x 1.29mm (four-line) and 2.92 x 1.29mm (six-line), and both packages are only 0.65mm thick. By integrating the equivalent of five discrete components per line in wafer-level packaging, the chips reduce component count and parts costs, while improving reliability and minimizing parasitic elements.
The EMIF04-VID01 and EMIF06-VID01 are characterized for the -40 to +85 degrees C operating temperature range, and are available in 10-bump and 15-bump lead-free flip-chip packages on tape-and-reel. Pricing ranges from US$0.40 to US$0.60 in quantities of 5,000.
Further information is available at www.st.com/ipad.
STMicroelectronics is a global leader in developing and delivering semiconductor solutions across the spectrum of microelectronics applications. An unrivalled combination of silicon and system expertise, manufacturing strength, Intellectual Property (IP) portfolio and strategic partners positions the Company at the forefront of System-on-Chip (SoC) technology and its products play a key role in enabling today's convergence markets. The Company's shares are traded on the New York Stock Exchange, on Euronext Paris and on the Milan Stock Exchange. In 2004, the Company's net revenues were $8.76 billion and net earnings were $601 million. Further information on ST can be found at www.st.com.
* EMI: Electromagnetic Interference. RFI: Radio Frequency Interference
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