date 01/15/2020
page 1 of 5
MODEL: CMM-3312AT-44308-TR │ DESCRIPTION: MEMS MICROPHONE
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FEATURES
• round
• analog
• small package
• reflow solder compatible
• omnidirectional
ELECTRICAL
parameter conditions/description min typ max units
directivity omnidirectional
sensitivity (S) at 94 dB SPL, 1 kHz -47 -44 -41 dB
supply voltage (VDD) 1.6 2.0 3.6 V
current consumption (IDSS) VDD = 2.0 V 80 µA
sensitivity reduction VDD = 3.6 ~ 1.6 V -0.5 dB
frequency (f) 100 10,000 Hz
signal to noise ratio (S/N) at 94 dB SPL, 1 kHz (A-weighted) 58 dBA
total harmonic distortion (THD) at 94 dB SPL, 1 kHz 0.2 %
acoustic overload point (AOP) at 10% THD, 1 kHz 105 dB SPL
output impedance (Zout) at 1 kHz 300 Ω
Notes: 1.Allspecicationsmeasuredat23±2°C,humidityat55±20%,unlessotherwisenoted.
ENVIRONMENTAL
parameter conditions/description min typ max units
operating temperature -40 100 °C
storage temperature in packaging -40 70 °C
RoHS yes
MECHANICAL
parameter conditions/description min typ max units
dimensions Ø3.30 x 1.20 mm
acoustic port top
terminals surface mount
weight 0.023 g
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date 01/15/2020 │ page 2 of 5
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CUI Devices │ MODEL: CMM-3312AT-44308-TR │ DESCRIPTION: MEMS MICROPHONE
MECHANICAL DRAWING
f

ĸ
ķ
ĸ
ĸ
units: mm
tolerance:±0.1mm
RecommendedPCBLayout
Top View
Recommended Vacuum Nozzle Pickup
Top View
ĸķ
ĸ
ĸ
TERMINALCONNECTIONS
TERM. FUNCTION
1VDD
output
2 GND
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date 01/15/2020 │ page 3 of 5
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CUI Devices │ MODEL: CMM-3312AT-44308-TR │ DESCRIPTION: MEMS MICROPHONE
FREQUENCY RESPONSE CURVE
APPLICATION CIRCUIT
1001K
0dB
+10dB
Frequency(Hz)
Sensitivity(dB)
10
K
+5dB
+15dB
+20dB
-5dB
-10dB
-15dB
-20dB
-25dB
+25dB
200 5002K5K
Frequency Response (0dB=1V/Pa)
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date 01/15/2020 │ page 4 of 5
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CUI Devices │ MODEL: CMM-3312AT-44308-TR │ DESCRIPTION: MEMS MICROPHONE
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PACKAGING
parameter conditions/description min typ max units
reel storage4at relative humidity <75% -40 70 °C
MSL Class1
reel size Ø170 mm max
reel QTY 1,000 pcs per reel
Note: 4. Recommended storage period no more than 1 year. Floor life (out of bag) no more than 4 weeks.
SOLDERABILITY
parameter conditions/description min typ max units
reowsoldering seereowprole 260 °C
Note: 1. Vacuuming over acoustical hole is not allowed.
2. Not suitable for wash process.
3.Notrecommendedtoexceed5reowcycles.
Temperature (°C)
Time (sec)
25
150
200
217
260
60~180 s
60~150 s
20~40 s
480 s max
3°C/s max ramp up 6°C/s max ramp down
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date 01/15/2020 │ page 5 of 5CUI Devices │ MODEL: CMM-3312AT-44308-TR │ DESCRIPTION: MEMS MICROPHONE
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CUI Devices oers a one (1) year limited warranty. Complete warranty information is listed on our website.
CUI Devices reserves the right to make changes to the product at any time without notice. Information provided by CUI Devices is believed to be accurate and reliable. However, no
responsibility is assumed by CUI Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use.
CUI Devices products are not authorized or warranted for use as critical components in equipment that requires an extremely high level of reliability. A critical component is any
component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to aect its safety or
eectiveness.
rev. description date
1.0 initial release 11/07/2018
1.01 brand update 01/15/2020
The revision history provided is for informational purposes only and is believed to be accurate.
REVISION HISTORY
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