CM1300 Datasheet, PDF (1/5 Pages) California Micro Devices Corp – 4 Channel EMI Filter Network

CM1300
4 Channel EMI Filter Network
Features
• Functionally and pin compatible with CSPRC032A
• OptiGuard^TM coated for improved reliability at
assembly
• 4 EMI filter lines per device
• Filters attenuate to –30dB at 3GHz
• CSP package minimizes cross-talk
• 9-bump 2.485mm X 0.985mm Chip Scale
Package (CSP), 0.5mm pitch
• 0.30mm Eutectic solder bumps
• Ultra small footprint suitable for portable devices
• Lead-free version available
Applications
• EMI filtering for RF sections of wireless devices
• Cellular phones
• Cordless phones
• Internet appliances
• PDAs
• Laptop computers
Product Description
The CM1300 is a 4-channel low pass EMI filter (R-C-R
configuration) manufactured in a Chip Scale Package
(CSP). Many portable applications require the attenua-
tion of signals in the 800-3000 MHz band. California
Micro Devices’ unique thin film technology provides a
minimum of –25dB of attenuation over this frequency
band.
The bump size and pitch of these filters are selected
such that the device can be placed directly on an FR4
printed circuit board using conventional assembly tech-
niques. The pin-out for the device features a signal
‘flow through’ design, allowing optimal PCB signal rout-
ing. The solder bump contacts are a 63/37 Sn/Pb alloy
(Sn/Ag/Cu for lead-free finish) and are 0.30 mm in
diameter.
The CM1300 incorporates OptiGuard^TM coating which
results in improved reliability at assembly. The device
is available in a space-saving, low-profile Chip Scale
Package with optional lead-free finishing.
Electrical Schematic
A1 50Ω
R
50Ω B1
CR
43pF
A2 50Ω ^GND 50Ω B2
R
CR
43pF
GND
B3
GND
A4 50Ω
50Ω B4
R
CR
43pF
GND
A5 50Ω
50Ω B5
R
CR
43pF
GND
© 2005 California Micro Devices Corp. All rights reserved.
11/07/05
490 N. McCarthy Blvd., Milpitas, CA 95035-5112 ● Tel: [phone] ● Fax: [phone] ● www.cmd.com
1