CSPRC032A
4 Channel EMI Filter Network
Features
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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
Product Description
The CSPRC032A is a 4-channel low pass EMI filter (R-
C-R configuration) in a Chip Scale Package (CSP).
Many portable applications require the attenuation of
signals in the 800-3000 MHz band. California Micro
Devices’ unique thin film technology provides a mini-
mum 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 signal routing.
The solder bump contacts are a 63/37 Sn/Pb alloy (Sn/
Ag/Cu for lead-free finish) and are 0.30 mm in diame-
ter.
The CSPRC032A is available in a space-saving, low-
profile Chip Scale Package with optional lead-free fin-
ishing.
Applications
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EMI filtering for RF sections of wireless devices
Cellular phones
Cordless phones
Internet appliances
PDAs
Laptop computers
Electrical Schematic
A1
50Ω
R
50Ω
C R
43pF
GND
50Ω
C R
43pF
GND
B3
B2
B1
A2
50Ω
R
A4
50Ω
R
GND
50Ω
C R
43pF
B4
A5
50Ω
R
GND
50Ω
C R
43pF
B5
GND
© 2005 California Micro Devices Corp. All rights reserved.
11/09/05
490 N. McCarthy Blvd., Milpitas, CA 95035-5112
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Tel: 408.263.3214
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Fax: 408.263.7846
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www.cmd.com
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