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PDF CSPEMI200A Data sheet ( Hoja de datos )
| Número de pieza | CSPEMI200A | |
| Descripción | 4 Channel Headset EMI Filter with ESD Protection | |
| Fabricantes | California Micro Devices | |
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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
Applications
• EMI filtering and ESD protection for audio ports
• Wireless Handsets
• Handheld PCs / PDAs
• MP3 Players
• Digital Camcorders
• Notebooks
• Desktop PCs
Product Description
The CSPEMI200A is a quad low-pass filter array inte-
grating four pi-style filters (C-R-C) that reduce EMI/RFI
emissions while at the same time providing ESD pro-
tection. This device is custom-designed to interface
with the headset port on a cellular telephone, and con-
tains 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 micro-
phone and speaker elements. They also support bipo-
lar 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 porta-
ble electronics (e.g., cellular telephones, PDAs, note-
book 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.
Electrical Schematic
MIC_IN1 B1
100Ω
C1 MIC_OUT1
SPKR_IN1 C3
10Ω
A3 SPKR_OUT1
MIC_IN2 A2
68Ω
C2 MIC_OUT2
SPKR_IN2 C4
10Ω
A4 SPKR_OUT2
GND B3
GND B4
B2 ESD Channel
© 2005 California Micro Devices Corp. All rights reserved.
09/27/05
490 N. McCarthy Blvd., Milpitas, CA 95035-5112 ● Tel: 408.263.3214 ● Fax: 408.263.7846 ● www.cmd.com
1
1 page  
Performance Information (Cont’d)
Typical Filter Performance (nominal conditions unless specified otherwise)
CwwSwP.DaEtaMSheIe2t40U.0coAm
Figure 3. Speaker 1 Circuit (A3-C3) EMI Filter Performance
Figure 4. Speaker 2 Circuit (A4-C4) EMI Filter Performance
© 2005 California Micro Devices Corp. All rights reserved.
09/27/05
490 N. McCarthy Blvd., Milpitas, CA 95035-5112 ● Tel: 408.263.3214 ● Fax: 408.263.7846 ● www.cmd.com
5
5 Page | ||
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| PDF Descargar | [ Datasheet CSPEMI200A.PDF ] | |
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