EMIF04-EAR02M8 Datasheet, PDF (1/12 Pages) STMicroelectronics – 4-line IPAD™ EMI filter and ESD protection for headset

EMIF04-EAR02M8
4-line IPAD™ EMI filter and ESD protection for headset
Features
■ Lead-free package
■ High attenuation: -30 dB at 900 MHz
■ Low cut-off frequencies: 60 MHz for speaker
lines
■ High current capability: 50 mA per line
■ Very low PCB space consumption:
1.5 mm x 1.7 mm
■ Very thin package: 0.6 mm maximum
■ High efficiency in ESD suppression
IEC6 1000-4-2 level 4
■ High reliability offered by monolithic integration
Complies with following standards:
■ IEC 61000-4-2 level 4 input pins
– 15 kV (air discharge)
– 8 kV (contact discharge)
Applications
■ Mobile phones
Description
The EMIF04-EAR02M8 chip is a highly integrated
device designed to suppress EMI/RFI noise for
headset mobile phone. The new LC architecture
on the speaker lines provides a high attenuation
value maintaining a very low serial resistance.
The 8-lead micro-QFN package offers the
possibility to integrate the whole function in a very
small PCB space.
Additionally, this filter includes ESD protection
circuitry, which prevents damage to the protected
device when subjected to ESD surges up 30 kV.
Micro QFN 8 leads
Figure 1. Pin configuration (bottom side)
MIC_P_Ext
MIC_N_Ext
EAR_Ext
EAR_Ext
MIC_P_Int
MIC_N_Int
EAR_Int
EAR_Int
Figure 2. Equivalent circuit
R
MIC
C
L_MIC
R
MIC
C
L_MIC
L
EAR
C
L_EAR
L
EAR
C
L_EAR
TM: IPAD is a trademark of STMicroelectronics
March 2009
Rev 1
1/12
www.st.com
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