New Industry Products

Alpha & Omega Semi Introduces Three Integrated EMI Filters For Portable Handheld Devices

December 09, 2008 by Jeff Shepard

Alpha & Omega Semiconductor, Inc. (AOS) announced the release of AOZ803x, a family of multi-line EMI Filters. These devices are designed and optimized to suppress unwanted EMI/RFI signals and provide ESD protection for next generation portable handheld devices such as cell phones, smart phones and portable navigation devices.

Leveraging the company’s advanced 2 ™ technology (Transient Voltage Suppression utilizing Trench Vertical Structures), the new products are ideal for EMI filtering and ESD protection of data lines in LCD displays and I/O interfaces in handheld devices.

"Compared to competing devices, our new multi-line EMI Filters provide a consistent -35dB filter attenuation from 0 to 5V which covers the entire display operating range. This feature greatly optimizes filter attenuation performance to improve overall device reliability and user experience," said Wayne Eng, Marketing Director for AOS’ TVS products.

The AOZ803x EMI Filter product family features three products. The AOZ8030, AOZ8035 and AOZ8033 protect 8, 6 and 4 lines, respectively. The filter performance is rated at -35dB attenuation from 800MHz to 3.0GHZ over the full operating range of battery powered LCD displays.

In addition, the device’s excellent low channel clamping voltage of 10V maximum at 12A peak pulse current provides superior protection to sensitive IC components. All devices are rated to provide ESD protection of ±20kV for contact and ±20kV for air discharge.

The AOZ803x products come in small footprint 0.4mm pitch DFN packages which are suitable for handheld applications where board space is limited.