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CM1415 Datasheet(PDF) 1 Page - California Micro Devices Corp |
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CM1415 Datasheet(HTML) 1 Page - California Micro Devices Corp |
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1 / 7 page  © 2004 California Micro Devices Corp. All rights reserved. 05/13/04 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ▲ Tel: 408.263.3214 ▲ Fax: 408.263.7846 ▲ www.calmicro.com 1 CM1415 3 Channel Headset EMI Filter with ESD Protection Features • Functionally and pin compatible with California Micro Device’s CSPEMI205 • Optiguard ™ coated for improved reliability at assembly • Three channels of EMI filtering, two for earpiece speakers and one for a microphone • Pi-style EMI filters in a capacitor-resistor-capacitor (C-R-C) network • 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) • 8-bump, 1.41mm X 1.45mm footprint Chip Scale Package (CSP) • Chip Scale Package features extremely low para- sitic inductance for optimum filter performance • Lead-free version available Applications • EMI filtering and ESD protection for headset micro- phone and speaker • Cellular / Mobile Phones • Notebooks and Personal Computers • Handheld PCs / PDAs / Tablets • Wireless Handsets • Digital Camcorders Product Description The CM1415 is a low-pass filter array integrating three 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 head- set port on a cellular telephone, and contains two dif- ferent filter values. Each high quality filter provides more than 30dB attenuation in the 800-2700 MHz range. These pi-style filters support bidirectional filter- ing, controlling EMI both to and from the microphone and speaker elements. They also support bipolar sig- nals, enabling audio signals to pass through without distortion. In addition, the CM1415 provides a very high level of protection for sensitive electronic components that may be subject to electrostatic discharge (ESD). The input pins are designed and characterized to 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 CM1415 is particularly well suited for portable electronics (e.g., cellular telephones, PDAs, notebook computers) because of its small package format and low weight. The CM1415 incorporates Optiguard ™ coating which results in improved reliability at assembly. The CM1415 is available in a space-saving, low-profile Chip Scale Package with optional lead-free finishing. Electrical Schematic 10 Ω Earpiece 1 A3 B4 C1 C3 B2 GND GND A1 10 Ω Input Earpiece 2 Input Earpiece 1 Output Earpiece 2 Output 68 Ω Microphone C5 A5 Input Microphone Output |
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