California Micro Devices Introduces New Generation Praetorian(TM) EMI Filter Architecture for Wireless Handsets

California Micro Devices Introduces New Generation Praetorian(TM) EMI Filter Architecture for Wireless Handsets

March 02, 2006

CM1460: Outstanding EMI Filter Performance With Robust ESD Protection in Thin Package

    MILPITAS, Calif., March 1 /Xinhua-PRNewswire/ --
California Micro Devices (Nasdaq: CAMD) today introduced a
new generation of its proprietary Praetorian(TM)
architecture and products as part of its ASIP(TM)
(Application Specific Integrated Passive(TM)) EMI
(electromagnetic interference) filter portfolio. The
Praetorian(TM) CM1460 EMI filter offers outstanding filter
performance combined with a high level of ESD
(electrostatic discharge) protection in an industry leading
TDFN (Thin DFN) package. This high performance single chip
solution based on a 3 pole L-C architecture leverages CMD's
proprietary Praetorian(TM) process technology that allows
the integration of spiral inductors on silicon.

    (Photos: 
http://www.newscom.com/cgi-bin/prnh/20060228/SFTU033-a
             
http://www.newscom.com/cgi-bin/prnh/20060228/SFTU033-b )

    The Praetorian(TM) CM1460 provides both superior EMI
filtering and ESD protection for interfaces connecting the
host processor to the camera and display modules in
wireless handsets.  In popular clamshell and slider phone
configurations, such interfaces are typically routed on a
flexible printed circuit board, highly vulnerable to EMI
radiation and potential ESD strikes. In addition, as data
rates increase and signal integrity requirements become
stricter, the use of traditional EMI filters based on R-C
(Resistor-Capacitor) architectures results in significant
signal degradation leading to potential application issues
such as visible data corruption on the display. 

    Key Features

    Each channel of the CM1460 consists of a 3 pole L-C
filter with a minimal inductor value of 17nH and nominal
capacitor values of 15pF.  Its insertion loss is much lower
than R-C filters, typically less than 1dB. With a typical
corner frequency of 300MHz, rolloff of 20dB/octave and
attenuation greater than 30dB between 800MHz and 3GHz, the
CM1460 offers industry leading filter performance. 

    In addition, the CM1460 also features robust ESD
protection up to +/- 15kV contact discharge per
IEC61000-4-2 Level 4 specification and +/- 30 kV using the
Human Body Model (HBM). In order to accommodate various
interface configurations, the CM1460 is available in 4, 6
and 8 channel versions.  The device is housed in an
industry leading Thin DFN (TDFN) package featuring a
typical height of 0.75mm and body sizes of 2.00mm x 2.00mm,
3.00mm x 1.35mm and 4.00mm x 1.60mm for the 4, 6 and 8
channel versions respectively.

    Benefits

    Using the Praetorian(TM) CM1460, wireless handset
designers can benefit from the highest levels of EMI
filtering and ESD protection while still meeting host
processor requirements for input setup time as low as 2ns
on the imager interface.  The CM1460 provides EMI filtering
and ESD protection in a single chip compared to ceramic
filters that require the use of external discrete ESD
protection devices.  The reduced part count optimizes the
footprint and lowers the overall bill of materials.

    Pricing and Availability

    The CM1460 is currently sampling, and pricing starts at
$0.34, $0.43 and $0.52 in 1,000 units for the 4, 6 and 8
channel configurations respectively. Production is
scheduled for Q2 2006. The CM1460 is offered in a lead free
TDFN package.

    About California Micro Devices Corporation

    California Micro Devices Corporation is a leading
supplier of application specific analog semiconductor
products for the mobile handset, personal computer and
digital consumer electronics markets. Key products include
Application Specific Integrated Passive(TM) (ASIP(TM))
devices and selected high value mixed signal ICs. Detailed
corporate and product information may be accessed at
http://www.calmicro.com .

    NOTE:  ASIP(TM), Application Specific Integrated
Passive(TM) and Praetorian(TM) are trademarks of California
Micro Devices. All other trademarks are property of their
respective owners.

    For more information, please contact:

     Richard Haas of California Micro Devices
     Tel:   [phone]
     Email: [e-mail]

SOURCE  California Micro Devices Corporation