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CSPEMI204G Datasheet(PDF) 1 Page - California Micro Devices Corp |
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CSPEMI204G Datasheet(HTML) 1 Page - California Micro Devices Corp |
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1 / 6 page  © 2005 California Micro Devices Corp. All rights reserved. 09/28/05 490 N. McCarthy Blvd., Milpitas, CA 95035-5112 ● Tel: 408.263.3214 ● Fax: 408.263.7846 ● www.cmd.com 1 CSPEMI204 2 Channel Headset EMI Filter with ESD Protection Features • Two channels of EMI filtering, one for a micro- phone and one for an earpiece speaker • Pi-style EMI filters in a capacitor-resistor-capacitor (C-R-C) network • Chip Scale Package features extremely low para- sitic inductance for optimum filter performance • Greater than 30dB relative attenuation in the 800- 2700MHz range • ±8kV ESD protection on each channel (IEC 61000- 4-2 Level 4, contact discharge) • ±15kV ESD protection on each channel (HBM) • 5-bump, 0.930mm X 1.410mm footprint Chip Scale Package (CSP) • Lead-free version available Applications • EMI filtering and ESD protection for headset micro- phone and earpiece speaker ports • Cellular / Mobile Phones • Notebooks and Personal Computers • Handheld PCs / PDAs / Tablets • Wireless Handsets • Digital Camcorders Product Description The CSPEMI204 is a low-pass filter array designed specifically to reduce EMI/RFI emissions and provide ESD protection for a headset port on a cellular and mobile devices. The CSPEMI204 integrates two high quality, pi-style filters (C-R-C) filters, one for a micro- phone and one for an earpiece or speaker, each pro- viding more than 30dB attenuation relative to the pass band attenuation in the 800-2700 MHz range. These filters support bidirectional filtering, reducing EMI both to and from the headset port and support bipolar audio signals without distortion. In addition, the CSPEMI204 provides a very high level of protection for sensitive electronic components that may be subject to electrostatic discharge (ESD). The CSPEMI204 can safely dissipate ESD strikes of ±8kV, the maximum requirement of the IEC 61000-4-2 inter- national standard. Using the MIL-STD-883 (Method 3015) specification for Human Body Model (HBM) ESD, the device provides protection for contact dis- charges to greater than ±15kV. The CSPEMI204 pro- tects sensitive components such as CPU and DSPs that have much weaker internal ESD protection cir- cuitry usually only intended for mechanical handling protection. The CSPEMI204 is particularly well-suited for portable electronics because of its small package format and low weight. The CSPEMI204 is available in a space- saving, low-profile Chip Scale Package with optional lead-free finishing. Electrical Schematic 10 Ω Earpiece C1 B2 GND A1 Input Earpiece Output 68 Ω Microphone C3 A3 Input Microphone Output |
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