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AS3418 Folha de dados(PDF) 17 Page - ams-OSRAM AG

Nome de Peças AS3418
Descrição Electrónicos  Low Noise ANC Solution
PDF  78 Pages
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Fabricante Electrônico  AMSOSRAM [ams-OSRAM AG]
Página de início  https://ams-osram.com/
Logo AMSOSRAM - ams-OSRAM AG

AS3418 Folha de dados(HTML) 17 Page - ams-OSRAM AG

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AS3418
Functional Description
Datasheet
• PUBLIC
DS000507
• v4-00 • 2020-Jan-23
77
│ 16
Figure 12 :
Simulated Microphone Frequency Response
In applications with PCB space limitations it is also possible to remove the capacitors CAC and connect
MICACL and MICACR pins directly to AGND. In this configuration AC coupling of the QMICR and
QMICL signals is recommended.
6.2.2
Parameter
VBAT=1.8V, TA= 25ºC , CAC=10µF, CMIC=4.7µF and RMICIN
=2.2kΩ unless otherwise specified.
Figure 13:
Microphone Parameter
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VMICIN_0
Typical maximum
Input Signal Level
Preamplifier gain=0dB, THD <
0.1%
1050
mVRMS
VMICIN_0
Preamplifier gain=20dB, THD <
0.1%
110
mVRMS
SNR
Signal to Noise
Ratio
0dB gain, High quality mode,
AGC disabled
119
dB
10dB gain, High quality mode,
AGC disabled
109
dB
20dB gain, High quality mode,
AGC disabled
106
dB
0dB gain, ECO mode, AGC
disabled
117
dB
10dB gain, ECO mode, AGC
disabled
108
dB
-5
0
5
10
15
20
25
30
35
10
100
1k
10k
f [Hz]
0dB
6dB
12dB
18dB
24dB
30dB



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