Document
CSPEMI205G
3-Channel Headset Microphone EMI Filter with ESD Protection
Product Description The CSPEMI205G 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 part is custom−designed to interface with the headset port on a cellular telephone, and contains two different filter values. Each high quality filter provides more than 30 dB 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 CSPEMI205G provides a very high level of protection for sensitive electronic components that may be subject to electrostatic discharge (ESD). The input pins safely dissipate ESD strikes of ±8 kV, 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 ±15 kV.
The CSPEMI205G is particularly well−suited for portable electronics (e.g. cellular telephones, PDAs, notebook computers) because of its small package format and low weight. The CSPEMI205G is available in a space−saving, low−profile Chip Scale Package with RoHS compliant lead−free finishing.
Features
• 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
• Chip Scale Package Features Extremely Low Parasitic Inductance
for Optimum Filter Performance
• Greater than 30 dB Relative Attenuation in the 800−2700 MHz
Range
• ±8 kV ESD Protection on each Channel
(IEC 61000−4−2 Level 4, Contact Discharge)
• ±15 kV ESD Protection on each Channel (HBM) • 8−Bump, 1.41 x 1.430 mm Footprint Chip Scale Package (CSP) • These Devices are Pb−Free and are RoHS Compliant
Applications
• EMI Filtering and ESD Protection for Headset Microphone and
Speaker
• Cellular / Mobile Phones • Notebooks and Personal Computers • Handheld PCs / PDAs / Tablets • Wireless Handsets • Digital Camcorders
© Semiconductor Components Industries, LLC, 2011
1
May, 2011 − Rev. 4
http://onsemi.com
WLCSP8 CASE 567BE
MARKING DIAGRAM + AF
AF = CSPEMI205G
ORDERING INFORMATION
Device
Package
Shipping†
CSPEMI205G CSP−8 3500/Tape & Reel (Pb−Free)
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specification Brochure, BRD8011/D.
Publication Order Number: CSPEMI205G/D
Earpiece 1 A1 Input
Earpiece 2 A3 Input
10 W 10 W
100 pF 100 pF
CSPEMI205G
ELECTRICAL SCHEMATIC
C1 Earpiece 1 Output
Microphone A5 Input
68 W
C3 Earpiece 2 Output
B2 GND
B4 GND
47 pF 47 pF
C5 Microphone Output
100 pF 100 pF
Orientation Marking
Orientation Marking
Table 1. PIN DESCRIPTIONS
8−bump CSP Packa.