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www.DataSheet4U.com CSPEMI200A
4 Channel Headset EMI Filter with ESD Protection
Features
• • • • • • • • • • Four channels of EMI filtering Pi-style EMI filters in a capacitor-resistor-capacitor (C-R-C) network Includes 1 channel of ESD-only protection Greater than 30dB attenuation at 1GHz +8kV ESD protection on each channel (IEC 61000-4-2 Level 4, contact discharge) +15kV ESD protection on each channel (HBM) Supports bipolar signals—ideal for audio applications 11-bump, 2.046mm X 1.436mm footprint Chip Scale Package (CSP) Chip Scale Package features extremely low lead inductance for optimum filter and ESD performance Lead-free version available
Product Description
The CSPEMI200A is a quad low-pass filter array integrating four pi-style filters (C-R-C) that reduce EMI/RFI emissions while at the same time providing ESD protection. This device is custom-designed to interface with the headset port on a cellular telephone, and contains 3 different filter values. Each high quality filter provides more than 20dB attenuation in the 800-2700 MHz range. These pi-style filters support bidirectional filtering, controlling EMI both to and from the microphone and speaker elements. They also support bipolar signals, enabling audio signals to pass through without distortion. In addition, the CSPEMI200A provides a very high level of protection for sensitive electronic components that may be subject to electrostatic discharge (ESD). The CSPEMI200A can safely dissipate ESD strikes of +8kV, the maximum requirement of the IEC 61000-4-2 international standard. Using the MIL-STD-883 (Method 3015) specification for Human Body Model (HBM) ESD, the device provides protection for contact discharges to greater than +15kV. The CSPEMI200A is particularly well suited for portable electronics (e.g., cellular telephones, PDAs, notebook computers) because of its small package format and low weight. The CSPEMI200A is available in a space-saving, low-profile Chip Scale Package with optional lead-free finishing.
Applications
• • • • • • • EMI filtering and ESD protection for audio ports Wireless Handsets Handheld PCs / PDAs MP3 Players Digital Camcorders Notebooks Desktop PCs
Electrical Schematic
MIC_IN1 B1 100Ω C1 MIC_OUT1 SPKR_IN1 C3 100pF 10Ω A3 SPKR_OUT1 100pF 47pF 47pF
MIC_IN2
A2
68Ω
C2
MIC_OUT2
SPKR_IN2
C4 100pF
10Ω
A4
SPKR_OUT2
100pF
GND GND
B3 B4
47pF
47pF
B2
ESD Channel
© 2005 California Micro Devices Corp. All rights reserved. 09/27/05
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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www.DataSheet4U.com CSPEMI200A
PACKAGE / PINOUT DIAGRAMS
TOP VIEW (Bumps Down View)
Orientation Marking (see note 2)
BOTTOM VIEW (Bumps Up View)
MIC_OUT1 MIC_OUT2 SPKR_IN1 SPKR_IN2
1 A B C
2
3
4
C1 C2
ESD1
C3
GND
C4
GND
200A
MIC_IN1
B1 Orientation Marking
B2 A2
B3 A3
B4 A4
MIC_IN2 SPKR_OUT1 SPKR_OUT2
A1
CSPEMI200A
Notes: CSP Package 1) These drawings are not to scale. 2) Lead-free devices ar.