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AS3658F-BCTP Datasheet(PDF) 107 Page - ams AG

Part # AS3658F-BCTP
Description  Power and Audio Management Unit for Portable Devices
PDF  158 Pages
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Manufacturer  AMSCO [ams AG]
Direct Link  http://www.ams.com
Logo AMSCO - ams AG

AS3658F-BCTP Datasheet(HTML) 107 Page - ams AG

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www.austriamicrosystems.com
Revision 1v13
106 - 157
AS3658
Data Sheet Confidential - Detail ed Descri ption- Audio Functi ons
Microphone Input Parameter
Table 110. Microphone Inputs Parameter, TA= 25oC unless otherwise mentioned
Symbol
Parameter
Min
Typ
Max
Unit
Note
VMICIN0
Input Signal Level
40
mVPEAK
AMICPRE = 28dB; AMIC = 0dB
VMICIN1
20
mVPEAK
AMICPRE = 34dB; AMIC = 0dB
VMICIN2
10
mVPEAK
AMICPRE = 40dB; AMIC = 0dB
RMICIN
Input Impedance
15
k
Ω
MICP, MICN to AGND
MICIN
Input Impedance
Tolerance
±15
%
CMICIN
Input Capacitance
5
pF
AMICPRE
Microphone
Preamplifier Gain
28
dB
Preamplifier has 3 selectable (fixed)
gain settings
34
40
AMIC
Programmable Gain
-40.5
+6
dB
Gain Steps
1.5
dB
discrete logarithmic gain steps
Gain Step Precision
±0.25
dB
VMICLIMIT
Limiter Activation Level
1
VPEAK
AMICLIMIT
Limiter Gain Overdrive
15*2
dB
tATTACK
Limiter Attack Time
50
µs/6dB
tDECAY
Limiter Decay Time
120
ms/6dB
AMICMUTE
Mute Attenuation
100
dB
VMICSUP
Microphone Supply
Voltage
2.9
V
IMICMAX
Max. Microphone
Supply Current
10
mA
microphones nominally need a bias
current of 0.5mA-1mA
VNOISE
Microphone Supply
Voltage Noise
5µV
IMICDET
Microphone Detection
Current
50
µA
IREMDET
Max. Remote
Detection Current
500
µA



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