MP23AB01DM
High-performance MEMS audio sensor:
fully differential analog bottom-port microphone
Datasheet
-
production data
RHLGA metal cap 4-lead
3.35 x 2.5 x 0.98 mm
Features
Single supply voltage operation
Fully differential output
Omnidirectional sensitivity
High signal-to-noise ratio
High bandwidth
High acoustic overload point
Package compliant with reflow soldering
High RF immunity
Description
The MP23AB01DM is a compact, low-power microphone built with a capacitive sensing element and an IC interface.
The sensing element, capable of detecting acoustic waves, is manufactured using a specialized silicon micromachining process to produce audio sensors.
The MP23AB01DM has an acoustic overload point of 130 dBSPL with a typical 64 dB signal-tonoise ratio.
The MP23AB01DM has fully differential output in order to minimize common-mode noise.
The sensitivity of MP23AB01DM is -38 dBV
±3 dB @ (0 dB = 1 V/Pa), 1 kHz.
The MP23AB01DM is available in a package compliant with reflow soldering and is guaranteed to operate over an extended temperature range from -40 °C to +85 °C.
Table 1. Device summary
Order code
MP23AB01DM
Temperature range ( C)
-40 to +85
Package
(3.35 x 2.5 x 0.98) mm
Packing
Tray
MP23AB01DMTR -40 to +85 (3.35 x 2.5 x 0.98) mm Tape and reel
April 2016
This is information on a product in full production.
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4
5
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Contents
Contents
6
MP23AB01DM
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Acoustic and electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1
Acoustic and electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2
Frequency response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Application recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.1
Soldering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.2
RHLGA metal cap 4-lead package information . . . . . . . . . . . . . . . . . . . . . 9
5.3
RHLGA metal cap 4-lead packing information . . . . . . . . . . . . . . . . . . . . . 11
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
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Figure 1. Pin connections
%RWWRP9LHZ
Pin n°
1
2
3
4
Pin name
Vdd
OUT-
OUT+
Ground
Table 2. Pin description
Function
Supply voltage
Negative output signal
Positive output signal
Ground
Pin description
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Acoustic and electrical specifications
2 Acoustic and electrical specifications
2.1
MP23AB01DM
Acoustic and electrical characteristics
The values listed in the tables below are specified for Vdd = 2.7 V, no load, Tamb = 25 °C unless otherwise specified.
Symbol
Table 3. Acoustic and electrical characteristics
Parameter
Vdd Supply voltage
(2)
Test condition Min.
Typ.
(1)
2.1
Idd Current consumption
So
SNR
PSR
Sensitivity
Signal-to-noise ratio
Power Supply Rejection
AOP Acoustic Overload Point
Zout Output Impedance
Cload Load capacitance
Rload Load resistance
Top Operating temperature range
@ 1 kHz (0dB =1V/Pa) -41
A-weighted
20 Hz - 20 kHz,
100 mVpp sine wave
125
10
-40
-38
64
-85
1. Typical specifications are not guaranteed
2. Minimum supply 2.1 V
Max.
3.6
250
-35
Unit
V
μ A dBV dB(A) dB
130 dBSPL
400
300
pF
+85 k
°C
Table 4. Typical distortion specifications at 1 kHz sine wave input
Parameter Test condition Typ. value
THD+N
94 dBSPL
120 dBSPL
130 dBSPL
< 0.5%
< 4%
< 10%
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Figure 2. Typical free field frequency response normalized at 1 kHz
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Absolute maximum ratings
3 Absolute maximum ratings
MP23AB01DM
Stresses above those listed as “Absolute maximum ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device under these conditions is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability.
Symbol
Table 5. Absolute maximum ratings
Ratings
T
Vdd Supply voltage
STG
Storage temperature range
Maximum value
-0.5 to 4.8
-40 to +105
Unit
V
°C
This device is sensitive to mechanical shock, improper handling can cause permanent damage to the part.
This device is sensitive to electrostatic discharge (ESD), improper handling can cause permanent damage to the part.
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Figure 3. MP23AB01DM electrical connections and external component values
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Package information MP23AB01DM
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK ® packages, depending on their level of environmental compliance. ECOPACK ® specifications, grade definitions and product status are available at: www.st.com
.
ECOPACK ® is an ST trademark.
T
P
T
L
T
SMIN
Figure 4. Recommended soldering profile limits t p
RAMP -UP
CRITICAL ZONE
T
L to T
P
T
SMAX t
L ts
PREHEAT
RAMP -DOWN
T25 °C to PEAK
TIME
30 60 90 120 150 180 210 240 270 300 330 360 390
Table 6. Recommended soldering profile limits
Description Parameter Pb free
Average ramp rate 3 °C/sec max T
L
to T
P
Preheat
Minimum temperature 150 °C T
SMIN
Maximum temperature
Time (T
SMIN
to T
SMAX
)
Ramp-up rate
T
SMAX t
S
200 °C
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T
SMAX
to T
L
Time maintained above liquidus temperature
Liquidus temperature
Peak temperature t
L
T
L
T
P
60 sec to 150 sec
217 °C
260 °C max
Time within 5 °C of actual peak temperature 20 sec to 40 sec
Ramp-down rate 6 °C/sec max
Time 25 °C (t = 25 °C) to peak temperature 8 minutes max
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5.2
Package information
RHLGA metal cap 4-lead package information
Figure 5. RHLGA metal cap 4-lead (3.35 x 2.5 x 0.98 mm) package outline
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Package information MP23AB01DM
Table 7. RHLGA metal cap 4-lead (3.35 x 2.5 x 0.98 mm) package mechanical data
Dimensions (mm)
Reference
Min.
Typ.
Max.
e4
G1
G2
G3
E3 e1 e2 e3
L
R1
R2
D
D2
D3
E
A
A1
A3 b
-
0.20
0.8
1.4
2.09
1.18
1.41
0.95
0.88
0.00
0.21
0.63
3.25
0.495
2.94
2.4
0.43
-
-
0.18
0.25
0.95
1.55
2.19
1.33
1.56
1.1
0.98
-
0.25
0.73
3.35
0.595
3.04
2.5
0.53
0.28
0.25
-
0.30
1.1
1.7
2.29
1.48
1.71
1.25
1.08
0.025
0.29
0.83
3.45
0.695
3.14
2.6
0.63
-
-
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5.3 RHLGA metal cap 4-lead packing information
Figure 6. Carrier tape mechanical specifications
Package information
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Revision history
Date
19-Apr-2016
Revision
Table 8. Document revision history
Changes
1 Initial release
MP23AB01DM
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