Knowles KAS-33100-0004 MUSKIE, User Manual

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KNOWLES – KAS-33100-004 “MUSKIE” MICROPHONE EVALUATION KIT USERS GUIDE
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TYPICAL CHARACTERISTICS – OPERATING PERAMETERS
ANA1 ANA2 PDM1 PDM2 I2S1 I2S2
Microphone Microphone Microphone Microphone Compatibility Compatibility Compatibility Compatibility Mapping Mapping Mapping Mapping
Mic Types Mic Types Mic Types Mic Types
Sullins Connector Socket Path switch settings Path switch settings Path switch settings Path switch settings
ANA
ANA ANA
ANA
1111
ANA
ANA ANA
ANA
2
22
2
PDM
PDM PDM
PDM
1111
PDM
PDM PDM
PDM
2
22
2
I2S
I2S I2S
I2S1111 I2S
I2S I2S
I2S2
22
2
Left Left Left Left
Channel Channel Channel Channel
Right Right Right Right
Channel Channel Channel Channel
Digital Mic Digital Mic Digital Mic Digital Mic
Selector Selector Selector Selector
Analog -Analog ANA ANA N/A
Analog-PDM ANA DIG PDM
Analog-I2S ANA DIG I2C
Analog-PDM DIG ANA PDM
Analog-I2S DIG ANA I2C
PDM-PDM DIG DIG PDM
I2S-I2S DIG DIG I2C
Table 1: Microphone Mapping
Signal Path Throughput
Muskie Audio Signal Path Attenuation
Muskie Audio Signal Path Attenuation Muskie Audio Signal Path Attenuation
Muskie Audio Signal Path Attenuation
(Audio Gain switch set to 0db) (Audio Gain switch set to 0db) (Audio Gain switch set to 0db) (Audio Gain switch set to 0db)
Audio Type
Audio Type Audio Type
Audio Type
Audio
Audio Audio
Audio
Path Path Path Path
Approximate
Approximate Approximate
Approximate
Gain Gain Gain Gain @ 1KHz @ 1KHz @ 1KHz @ 1KHz
Analog Single or
Differential
XLR 0db
PDM XLR -6db(Vrms/FS)
I2S XLR -0db(Vrms/FS)
Analog Single or
Differential
Headset -6db
PDM Headset -12db(Vrms/FS)
I2S Headset -6db(Vrms/FS)
Analog Single or
Differential
USB -34db
PDM USB -40db
I2S USB -34db
Table 2: Muskie Signal Path
Noise Floor (No Signal)
Figure 22: Noise Floor
-160
-140
-120
-100
-80
-60
-40
-20
0
0 10000 20000 30000 40000
N
o
is
e
F
lo
o
r
L
e
v
e
l
(d
b
)
Frequency (Hz)
Noise Floor ANA
Noise Floor PDM
Noise Floor I2S