California Micro Devices Delivers EMI Filters in Ultra Thin Packages for Wireless Handset Applications

Praetorian™ and Centurion™ EMI Filter ASIP™ Devices Address Critical Performance and Space Requirements

MILPITAS, Calif., -- Oct. 02, 2006 -- California Micro Devices (NASDAQ: CAMD) today announced a new family of packaged Praetorian and Centurion EMI (electromagnetic interference) filter ASIP (Application Specific Integrated Passive™) devices that feature superior EMI filtering performance combined with robust ESD (electrostatic discharge) protection in the thinnest and most compact packages available for use in mobile handsets. The new CM16XX series ASIP devices are available in 0.4mm pitch uDFN packages with a typical thickness of 0.50mm, providing space savings of up to 42 percent compared to existing 0.5mm pitch DFN packages. The new family of ASIP products features the CM1690 Praetorian architecture LC EMI filter ASIP device with ESD protection. Praetorian architecture LC ASIP devices, which feature the industry’s highest level of EMI filter performance for high resolution display and imager interfaces, are now available in the industry’s smallest form factor package.

Market Trends
With the adoption of higher resolution color displays and camera imagers spreading to a larger segment of the handset market, there is a growing need for EMI filters that offer higher cutoff frequencies while providing a greater level of attenuation performance at the frequency band of 800 MHz through 3.0GHz. Additionally, with a continuing trend toward smaller and thinner handsets, designers are seeking thinner profile solutions that will fit within the critical space constraints of these new designs. The new CM16XX family of small form factor uDFN EMI filter ASIP devices from CMD address these critical filter performance requirements, along with innovative new packaging that helps wireless handset designers solve critical space constraint issues. Engineers no longer have to compromise performance for form factor.

Key Features
The new CM16XX family of uDFN EMI filter ASIP devices offers handset designers the flexibility to choose a solution optimized for both price and performance with a series of pin compatible Centurion RC and Praetorian LC architecture EMI filter ASIP devices. Attenuation is a critical factor in selecting filters; the uDFN offerings from CMD provide superior attenuation in the frequency band from 800 MHz to 3.0GHz. Superior filter performance across all channels is achieved through the large area ground pad on the bottom of the uDFN package which minimizes ground inductance. The CM16XX series of uDFN filter ASIP devices is backward compatible with CMD’s previous offerings of 0.4 mm pitch TDFNs as well as our competitors’ offerings of TDFN and DFN packages, so engineers can significantly reduce the thickness of their mobile products without having to redesign their PC boards. Each of the new devices provides ESD protection up to ±15kV contact discharge per IEC61000-4-2 Level 4 specification, which makes them suitable for practically all mobile applications.

Significant Space Savings
The Praetorian and Centurion uDFN product families are available in 4, 6, and 8 channel configurations. The new 4 channel devices require 42 percent less board space than with competing filters using 0.5mm pitch TDFN packages. For the 6 channel and 8 channel versions, space savings of approximately 30 percent can be achieved. The package dimensions of the 4, 6 and 8 channel versions are: 1.7mm x 1.35mm (8 leads), 2.5mm x 1.35mm (12 leads) and 3.3mm x 1.35mm (16 leads) respectively.

CMD’s CM16XX family of uDFN products should be considered for new designs which have critical height constraints, and by all designs which would like to exploit the superior filter performance offered by these low profile parts.

The following table outlines the general specifications of interest to designers. More complete descriptions, including specifications and graphs, are available for download at our website, www.cmd.com.

PRODUCT FAMILY	ARCHITECTURE	FREQUENCY CUTOFF	TYPICAL INSERTION LOSS	ATTENUATION
				1GHz	2GHz	3GHz
CM1690 series	Praetorian LC	330MHz	-1dB	-35dB	-45dB	-43dB
CM1630 series	Centurion RC	175 MHz	-6dB	-30dB	-40dB	-35dB
CM1631 series	Centurion RC	100 MHz	-6dB	-40dB	-45dB	-40dB
CM1636 series	Centurion RC	105 MHz	-10dB	-40dB	-40dB	-37dB
CM1637 series	Centurion RC	200 MHz	-10dB	-35dB	-43dB	-40dB

Pricing and Availability
Sample pricing ranges between $0.32 and $0.61 each in 1,000 unit quantities, depending on channel configuration. Production quantities are available at standard lead time. They are only available in a lead free version.

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