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INMP621ACEZ-R0

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21
INMP621
SPECIFICATIONS
TABLE 1. ELECTRICAL CHARACTERISTICS
(T
A
= −40 to 85°C, VDD = 1.8 to 3.3 V, CLK = 3.072 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 and Table 2, unless otherwise
noted. Typical specifications are not guaranteed.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
NOTES
PERFORMANCE
Directionality
Omni
Output Polarity
Input acoustic pressure vs.
output data
Inverted
Sensitivity
1kHz, 94 dB SPL
−48
−46
−44
dBFS
1, 2
Signal-to-Noise Ratio (SNR)
20 Hz to 20 kHz, A-
weighted
65 dBA
Equivalent Input Noise (EIN)
20 Hz to 20 kHz, A-
weighted
29 dBA SPL
Acoustic Dynamic Range
Digital Dynamic Range
Derived from EIN and
acoustic overload point
104 dB
2
Derived from EIN and full-
scale acoustic level
111 dB
Frequency Response
Low frequency −3 dB point
45
Hz
3
High frequency −3 dB
point
>20 kHz
Total Harmonic Distortion (THD)
105 dB SPL
0.35
1
%
Power Supply Rejection (PSR)
217 Hz, 100 mV p-p square
wave superimposed on
VDD = 1.8 V, A-weighted
−100 dBFS
Power Supply Rejection—Swept Sine
1 kHz sine wave
−113
dBFS
Acoustic Overload Point
10% THD
133
dB SPL
Full-Scale Acoustic Level
0 dBFS output
140
dB SPL
POWER SUPPLY
Supply Voltage (V
DD
)
1.62
3.63
V
Supply Current (I
S
)
V
DD
= 1.8 V
Normal Mode
1.2 1.5 mA
Sleep Mode 5.5 µA 4
V
DD
= 3.3 V
Normal Mode
1.3
1.6
mA
Sleep Mode
8
µA
4
DIGITAL INPUT/OUTPUT CHARACTERISTICS
Input Voltage High (V
IH
) 0.65 x V
DD
V
Input Voltage Low (V
IL
) 0.35 x V
DD
V
Output Voltage High (V
OH
)
I
LOAD
= 0.5 mA 0.7 x V
DD
V
DD
V
Output Voltage Low (V
OL
)
I
LOAD
= 0.5 mA 0 0.3 x V
DD
V
Output DC Offset
Percent of full scale
3
%
Latency
<30
µs
Noise Floor
20 Hz to 20 kHz, A-
weighted
−111 dBFS
Note 1: Sensitivity is relative to the RMS level of a sine wave with positive amplitude equal to 100% logical 1s density and negative amplitude equal to 0% logical 1s
density.
Page 4 of 21
Document Number: DS-INMP621-00
Revision: 1.1
Rev Date: 05/21/2014
INMP621
Note 2: The ±2 dB sensitivity specification is valid for CLK = 3.072 MHz. At lower clock frequencies, the minimum and maximum specifications are −49 dBFS and −43
dBFS, respectively.
Note 3: See Figure 4 and Figure 5.
Note 4: The microphone enters sleep mode when the clock frequency is less than 1 kHz.
TABLE 2. TIMING CHARACTERISTICS
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
NOTES
SLEEP MODE
Sleep Time
Time from CLK falling < 1
kHz
30
µs
1
Wake-Up Time
Time from CLK rising > 1
kHz to output within 3 dB
of final sensitivity, power
on
10
ms
1
INPUT
t
CLKIN
Input clock period
270
1000
ns
Clock Frequency (CLK)
1.0
3.072
3.6
MHz 1
Clock Duty Cycle
40
60
%
OUTPUT
T
1OUTEN
DATA1 (right) driven after
falling clock edge
31
ns
T
1OUTDIS
DATA1 (right) disabled after
rising clock edge
5
23
ns
T
2OUTEN
DATA2 (left) driven after
rising clock edge
31
ns
T
2OUTDIS
DATA2 (left) disabled after
falling clock edge
5
26
ns
Note 1: The microphone operates at any clock frequency between 1.0 MHz and 3.6 MHz. Some specifications may not be guaranteed at frequencies other than 3.072 MHz.
TIMING DIAGRAM
Figure 1. Pulse Density Modulated Output Timing
t
CLKIN
CLK
DATA2
DATA1
t
2OUTDIS
t
1OUTDIS
t
2OUTEN
t
1OUTEN
Page 5 of 21
Document Number: DS-INMP621-00
Revision: 1.1
Rev Date: 05/21/2014
INMP621
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 3. ABSOLUTE MAXIMUM RATINGS
PARAMETER
RATING
Supply Voltage (VDD)
−0.3 V to +3.63 V
Digital Pin Input Voltage
−0.3 V to (VDD) + 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
Operating Temperature Range
−40°C to +85°C
Storage Temperature Range
−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-INMP621-00
Revision: 1.1
Rev Date: 05/21/2014
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21

INMP621ACEZ-R0

Mfr. #:
Buy INMP621ACEZ-R0
Manufacturer:
TDK InvenSense
Description:
MEMS Microphones Wide Dynamic Range Microphone with PDM Digital Output
Lifecycle:
New from this manufacturer.
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