INMP441
SPECIFICATIONS
TABLE 1. ELECTRICAL CHARACTERISTICS
(T
A
= −40 to 85°C, V
DD
= 1.8 to 3.3 V, CLK = 2.4 MHz, C
LOAD
= 30 pF, unless otherwise noted. All minimum and
maximum specifications are guaranteed across temperature, voltage, and clock frequency specified in Table 1, Table
2, Table 3, unless otherwise noted. Typical specifications are not guaranteed.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
NOTES
PERFORMANCE
Directionality
Omni
Sensitivity
1 kHz, 94 dB SPL
29
26
23
dBFS
1
Signal-to-Noise Ratio (SNR)
20 Hz to 20 kHz, A-weighted
61
dBA
Equivalent Input Noise (EIN)
20 Hz to 20 kHz, A-weighted
33
dBA SPL
Dynamic Range
Derived from EIN and
maximum acoustic input
87 dB
Frequency Response
Low frequency 3 dB point
60
Hz
2
High frequency 3 dB point
15
kHz
Total Harmonic Distortion (THD)
105 dB SPL
3
%
Power-Supply Rejection (PSR)
217 Hz, 100 mVp-p square
wave superimposed on V
DD
=
1.8 V
75 dBFS
Maximum Acoustic Input
Peak
120
dB SPL
Noise Floor
20 Hz to 20 kHz, A-weighted,
RMS
87 dBFS
POWER SUPPLY
Supply Voltage (V
DD
)
1.62
3.63
V
Supply Current (I
S
)
V
DD
= 1.8 V
Normal Mode
1.4 1.6 mA
Standby 0.8 mA
Power Down 2 µA
V
DD
= 3.3 V
Normal Mode
2.2
2.5
mA
Standby
0.8
mA
Power Down
4.5
µA
DIGITAL FILTER
Group Delay
17.2/fS sec
f
S
= 48 kHz 359
µs
f
S
= 16 kHz 1078
µs
Pass-Band Ripple
±0.04
dB
Stop-Band Attenuation 60 dB
Pass Band 0.423 × f
S
20.3 kHz
Note 1: The peak-to-peak amplitude relative to peak-to-peak amplitude of (2
24
− 1.) The stimulus is a 104 dB SPL sinusoid having RMS amplitude
of 3.1623 Pa. Sensitivity is relative to 1 Pa.
Note 2: See Figure 4 and Figure 5.
Page 4 of 21
Document Number: DS-INMP441-00
Revision: 1.1
INMP441
TABLE 2. I
2
S DIGITAL INPUT/OUTPUT CHARACTERISTICS
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
NOTES
DIGITAL INPUT
Input Voltage High (V
IH
) L/R, WS, SCK 0.7 x V
DD
V
DD
V 1
Input Voltage Low (V
IL
) L/R, WS, SCK 0 0.25 x V
DD
V 1
SD DIGITAL INPUT
Voltage Output Low (VOL) VDD = 1.8 V, I
SINK
= 0.25 mA 0.1 × V
DD
V
1
Voltage Output Low (VOL) VDD = 1.8 V, I
SINK
= 0.7 mA 0.3 × V
DD
V
1
Voltage Output High (VOH) VDD = 1.8 V, I
SINK
= 0.7 mA
0.7 × V
DD
V 1
Voltage Output High (VOH)
VDD = 1.8 V, I
SINK
= 0.25 mA
0.9 × V
DD
V
1
Voltage Output Low (VOL) VDD = 3.3 V, I
SINK
= 0.5 mA
0.1 × V
DD
V 1
Voltage Output Low (VOL) VDD = 3.3 V,
ISINK
= 1.7 mA
0.3 × V
DD
V 1
Voltage Output High (VOH) VDD = 3.3 V, I
SINK
= 1.7 mA
0.7 × V
DD
V 1
Voltage Output High (VOH) VDD = 3.3 V, I
SINK
= 0.5 mA
0.9 × V
DD
V 1
Note 1: Limits based on characterization results; not production tested.
TABLE 3. SERIAL DATA PORT TIMING SPECIFICATIONS
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
NOTES
t
SCH
SCK high 50
ns
t
SCL
SCK low
50
ns
t
SCP
SCK period
312
ns
f
SCK
SCK frequency
0.5
3.2
MHz
t
WSS
WS setup
0
ns
t
WSH
WS hold
20
ns
f
WS
WS frequency
7.8
50
kHz
TIMING DIAGRAM
Figure 1. Serial Data Port Timing
SCK
WS
SD
t
SCP
t
SCH
t
SCL
t
WSH
t
WSS
Page 5 of 21
Document Number: DS-INMP441-00
Revision: 1.1
INMP441
ABSOLUTE MAXIMUM RATINGS
Stress above those listed as Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only
and functional operation of the device at these conditions is not implied. Exposure to the absolute maximum ratings conditions for
extended periods may affect device reliability.
TABLE 4. ABSOLUTE MAXIMUM RATINGS
PARAMETER
RATING
Supply Voltage (V
DD
)
0.3 V to +3.63 V
Digital Pin Input Voltage
0.3 V to V
DD
+ 0.3 V or 3.63 V, whichever is less
Sound Pressure Level
160 dB
Mechanical Shock
10,000 g
Vibration
Per MIL-STD-883 Method 2007, Test Condition B
Temperature Range
Biased
40°C to +85°C
Storage
55°C to +150°C
ESD CAUTION
ESD (electrostatic discharge) sensitive device.
Charged devices and circuit boards can
discharge without detection. Although this
product features patented or proprietary
protection circuitry, damage may occur on
devices subjected to high energy ESD.
Therefore proper ESD precautions should be
taken to avoid performance degradation or
loss of functionality.
Page 6 of 21
Document Number: DS-INMP441-00
Revision: 1.1

INMP441ACEZ-R7

Mfr. #:
Manufacturer:
TDK InvenSense
Description:
MEMS Microphones Omnidirectional Microphone with Bottom Port and I S Digital Output
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
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