This is information on a product in full production.
September 2014 DocID026104 Rev 3 1/12
MP23AB02B
MEMS audio sensor
high-performance analog bottom-port microphone
Datasheet - production data
Features
Single supply voltage operation
Low power consumption
Omnidirectional sensitivity
High signal-to-noise ratio
High bandwidth
Package compliant with reflow soldering
Description
The MP23AB02B is a compact, low-power
microphone built with a low-profile sensing
element.
The sensing element, capable of detecting
acoustic waves, is manufactured using a
specialized silicon micromachining process to
produce audio sensors.
The MP23AB02B has an acoustic overload point
of 125 dBSPL with a 64 dB signal-to-noise ratio.
The MP23AB02B 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.
RHLGA metal cap 3-lead
3.35 x 2.5 x 0.98 mm
Table 1. Device summary
Order code Temperature range (C) Package Packing
MP23AB02B -40 to +85 (3.35 x 2.5 x 0.98) mm Tray
MP23AB02BTR -40 to +85 (3.35 x 2.5 x 0.98) mm Tape and reel
www.st.com
Pin description MP23AB02B
2/12 DocID026104 Rev 3
1 Pin description
Figure 1. Pin connections
Table 2. Pin description
Pin n° Pin name Function
1 Out Analog output
2 Vdd Power supply
3 GND Ground
12
3
DocID026104 Rev 3 3/12
MP23AB02B Acoustic and electrical specifications
12
2 Acoustic and electrical specifications
2.1 Acoustic and electrical characteristics
The values listed in the table below are specified for Vdd = 1.8 V, Tamb = 25 °C unless
otherwise specified.
Figure 2. Frequency response
Table 3. Acoustic and electrical characteristics
Symbol Parameter Test condition Min. Typ.(1)
1. Typical specifications are not guaranteed
Max. Unit
Vdd Supply voltage 1.6 1.8 3.6 V
Idd Current consumption mean value = 2 V 150 220 μA
So Sensitivity 1 kHz (0 dB = 1 V/Pa) -41 -38 -35 dBV/PA
SNR Signal-to-noise ratio A-weighted, 1 kHz
(0 dB = 1 V/Pa) 64 dBA
Top Operating temperature range -40 +85 °C
Table 4. Distortion specifications at 1 kHz
Parameter Test condition Value
Distortion 94 < 0.5%
Distortion 120 < 2%
Distortion 124 = 10%
Absolute maximum ratings MP23AB02B
4/12 DocID026104 Rev 3
3 Absolute maximum ratings
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.
Table 5. Absolute maximum ratings
Symbol Ratings Maximum value Unit
Vdd Supply voltage -0.5 to 4 V
TSTG Storage temperature range -40 to +125 °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.
DocID026104 Rev 3 5/12
MP23AB02B Application recommendations
12
4 Application recommendations
Figure 3. MP23AB02B electrical connections and external component values
MP23AB02B
Pin.2
Pin.1
Pin.3
+
Vdd
C1
C2 C3
(Ground)
R2
Typical values:
C1 > 1µF
C2 ~ 1000pF
C3 = 1µF
(Vout )
-
R1
Vref
Ext. gain = (R1+R2) / R1
Vref
R
GAMS1103141450SG
Package mechanical data MP23AB02B
6/12 DocID026104 Rev 3
5 Package mechanical data
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.
MP23AB02B Package mechanical data
DocID026104 Rev 3 7/12
Figure 4. RHLGA metal cap 3-lead 3.35 mm x 2.5 mm x 0.98 mm package outline
8419346_A
Package mechanical data MP23AB02B
8/12 DocID026104 Rev 3
Table 6. RHLGA metal cap 3-lead (3.35 x 2.5 x 0.98 mm9 package dimensions
Reference
Dimensions (mm)
Min. Typ. Max.
A1 0.880 0.980 1.080
A2 0.200 0.250 0.300
D1 3.250 3.350 3.450
D2 0.495 0.595 0.695
D3 2.770 2.920 3.070
R1 0.275 0.325 0.375
R2 0.28
R3 0.25
E1 2.400 2.500 2.600
E2 1.150 1.250 1.350
E3 1.920 2.070 2.220
L1 1.480 1.520 1.560
L2 1.180 1.220 1.260
N1 0.885 0.925 0.965
N2 0.570 0.610 0.650
T1 0.860 0.900 0.940
T2 0.640 0.680 0.720
G1 0.900 0.950 1.000
G2 1.400 1.550 1.600
G3 0.100 0.150 0.200
P1 1.425 1.475 1.525
P2 1.000 1.050 1.100
d 0.150
K 0.050
DocID026104 Rev 3 9/12
MP23AB02B Package mechanical data
12
Figure 5. RHLGA tape and reel (dimensions are in mm.)
*$066*
Soldering information MP23AB02B
10/12 DocID026104 Rev 3
6 Soldering information
Figure 6. Recommended soldering profile limits
Table 7. Recommended soldering profile limits
Description Parameter Pb free
Average ramp rate TL to TP3 °C/sec max
Preheat
Minimum temperature
Maximum temperature
Time (TSMIN to TSMAX)
TSMIN
TSMAX
tS
150 °C
200 °C
60 sec to 120 sec
Ramp-up rate TSMAX to TL
Time maintained above liquidus temperature
Liquidus temperature
tL
TL
60 sec to 150 sec
217 °C
Peak temperature TP260 °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
T25°C to PEAK
RAMP-DOWN
RAMP-UP
ts
PREHEAT
tL
tp
CRITICAL ZONE
TLto TP
TSMAX
TSMIN
TIME
TP
TL
TEMPERATURE
30 60 90 120 150 180 210 240 270 300 330 360 390 AM045166v1
MP23AB02B
12/12 DocID026104 Rev 3
IMPORTANT NOTICE – PLEASE READ CAREFULLY
STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and
improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on
ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order
acknowledgement.
Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or
the design of Purchasers’ products.
No license, express or implied, to any intellectual property right is granted by ST herein.
Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product.
ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners.
Information in this document supersedes and replaces information previously supplied in any prior versions of this document.
© 2014 STMicroelectronics – All rights reserved
