ESD/EMI Protection for Microphone Interface (single-ended)
VMIC
V
DD
Infineon
Silicon
Microphone
OUT
C
EMC
(30 pF)
SMM310
GND
15 kV
(leave open)
A3
2 kV
TM
®
Infineon HiPAC
Microphone Filter
100 nF
B1
C1
2 kV
Baseband IC
C3
MICP1
MICN1
B2 B3 C2
BGF200
50
Ω
100 nF
A2
750 nF
ESD/EMI Protection for Microphone Interface (differential mode)
∗)
A4
15 kV
Infineon
®
HiPAC
TM
Microphone Filter
VMIC
A2
2 kV
1 kΩ
Baseband IC
B4
B1
100 nF
MICP1
Silicon
Microphone
VMICP
VMICN
15 kV
B3 A3 B2
2 kV
100 nF
MICN1
C4
C1
C3 A3 B2
1 kΩ
BGF100
C2
) VMIC (A2 or A4) depending on Application
10
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