EMIF04-EAR02M8 Ver la hoja de datos (PDF) - STMicroelectronics

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EMIF04-EAR02M8

4-line IPAD™ EMI filter and ESD protection for headset

STMicroelectronics 

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 all pins:

– 15 kV (air discharge)

– 8 kV (contact discharge)

Application

■ mobile phones

Description

The EMIF04-EAR02M8 chip is a highly integrated

device designed to suppress EMI/RFI noise for

mobile phone headsets. The new LC architecture

on the speaker lines provides a high attenuation

value maintaining a very low serial resistance.

The µQFN-8L 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.

µQFN-8L

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

September 2010

Doc ID 15508 Rev 2

1/12

www.st.com

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