Complete EMI filter and ESD protection for audio interfaces

Complete EMI filter and ESD protection for audio interfaces
Complete EMI filter and
ESD protection for audio interfaces
New high density capacitance IPADTM
designed for audio interfaces
Mobile devices featuring multimedia capability now
incorporate richer, thinner and lighter designs. For example,
audio capabilities are no longer confined to voice applications
but have been extended to include music and video.
This highly-integrated and compact environment brings EMI
interference, ESD destruction and space constrains which
are key issues that must be taken into consideration when
developing mobile devices.
STMicroelectronics provides an advanced family of
integrated passive and active devices that includes a
breakthrough technology with high density capacitance
integration on top of EMI filters and ESD protections.
From dedicated devices to the new, “all-in-one”
EMIF06-AUD01F2, ST delivers the best-in-class solutions
available.
Microphone
Typical application area
n
n
EMIF02-MIC01F2
n 2 line EMI filter and 15kV ESD protection
n 50Ω serial impedance
n High density capacitor technology
n 0.5mm pitch Flip-Chip package (thickness: 0.65mm)
Earpiece and headset
n
n
EMIF02-SPK01F2
n 2 line EMI filter and 15kV ESD protection
n 10Ω serial impedance
2
n Very low PCB area: 1.6mm replacing 6 discretes
n 0.5mm pitch Flip-Chip package (thickness: 0.65mm)
EMIF04-EAR01F2
n 4 line EMI filter and 15kV ESD protection
n 10Ω serial impedance
n High density capacitor technology
n 0.5mm pitch Flip-Chip package (thickness: 0.65mm)
Microphone, earpiece and headset
n
EMIF06-AUD01F2
n 6 line EMI filter and 15kV ESD protection
n Complete solution for audio interface
n 30 discrete components integrated in one device
2
n Very low PCB area: 4.6mm
n 0.5mm pitch Flip-Chip package (thickness: 0.65mm)
www.st.com/ipad
Mobile phones
PDAs
n Computer
n Personal and home entertainment (portable audio,
DVD player, LCD TV, digital camera)
n
Application needs
n
High level EMI suppression
Bi-directional ESD protection
n Low insertion loss for speaker/receiver application
n
Main benefits
n
Rejection of mobile phone frequencies
Complies with ESD standard IEC level 4
n Suppresses radiated frequencies
n Outperforms discrete solutions
n Reduction of component count
n Board space saving
n
Application diagrams
EMIF02-SPK01F2
EMIF02-MIC01F2
Audio
processing
and
conversion
Vcc
R3
R5
R1
A
Microphone
R6
D
R2
C1
GND
GND
GND
C2
GND
C3
GND
C4
GND
C5
R4
GND
GND
Low-pass
filter
Audio
amplifier
C6
GND
Speaker
GND
GND
EMIF06-AUD01F2
(External balanced microphone/stereo line in)
CTRL1
CTRL2
R1
R2
R3
MIC2_P_Ext
MIC2_P
MIC2_N_Ext
MIC2_N
R4
GND
GND
R6
CTRL3
MIC1_P_Ext
R7
MIC1_P
MIC1_N_Ext
R8
R9
MIC1_N
SPK_R_Ext
MIC1_V
R10
SPK_R
+
R12
SPK_V
R13
SPK_L_Ext
SPK_L
+
R11
GND
© STMicroelectronics - January 2007 - Printed in Italy - All rights reserved
The STMicroelectronics corporate logo is a registered trademark of the STMicroelectronics group of companies. All other names are the property of their respective owners.
For selected STMicroelectronics sales offices fax:
China +86 21 52574820; France +33 1 55489569; Germany +49 89 4605454; Italy +39 02 8250449; Japan +81 3 57838216; Singapore +65 6481 5124;
Sweden +46 8 58774411; Switzerland +41 22 9292900; United Kingdom and Eire +44 1628 890391; USA +1 781 861 2678
Full product information at www.st.com
Order code: FLEMI0107
Recycled and chlorine free paper
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertisement