page
date
DESCRIPTION: electret condenser microphone
1 of 4
06/2008
20050 SW 112th Ave. Tualatin, Oregon 97062 phonephone 503.612.2300 faxfax 503.612.2383
PART NUMBER: CMA-4544PF-W
SPECIFICATIONS
directivity omnidirectional
sensitivity (S) -44 ±2 dB f = 1KHz, 1Pa 0dB = 1V/Pa
sensitivity reduction (ΔS-Vs) -3 dB f = 1KHz, 1Pa Vs = 3.0 ~ 2.0 V dc
operating voltage 3 V dc (standard), 10 V dc (max.)
output impedance (Zout) 2.2 KΩf = 1KHz, 1Pa
operating frequency (f) 20 ~ 20,000 Hz
current consumption (IDSS) 0.5 mA max. Vs = 3.0 V dc RL = 2.2KΩ
signal to noise ratio (S/N) 60 dBA f = 1KHz, 1Pa A-weighted
operating temperature -20 ~ +70° C
storage temperature -20 ~ +70° C
dimensions ø9.7 x 4.5 mm
weight 0.80 g max.
material Al
terminal pin type (hand soldering only)
RoHS yes
note: We use the “Pascal (Pa)” indication of sensitivity as per the recomendation of I.E.C. (International
Electrotechnical Commission). The sensitivity of “Pa” will increase 20dB compared to the “ubar”
indication. Example: -60dB (0dB = 1V/ubar) = -40dB (1V/Pa)
APPEARANCE DRAWING
page
date
DESCRIPTION: electret condenser microphone
2 of 4
06/2008
20050 SW 112th Ave. Tualatin, Oregon 97062 phonephone 503.612.2300 faxfax 503.612.2383
PART NUMBER: CMA-4544PF-W
MEASUREMENT CIRCUIT
FREQUENCY RESPONSE CURVE
page
date
DESCRIPTION: electret condenser microphone
3 of 4
06/2008
20050 SW 112th Ave. Tualatin, Oregon 97062 phonephone 503.612.2300 faxfax 503.612.2383
PART NUMBER: CMA-4544PF-W
ENVIRONMENT TEST
item test condition
high temp. test After being placed in a chamber at +70°C for
72 hours.
low temp. test After being placed in a chamber at -20°C for
72 hours.
humidity test After being placed in a chamber at +40°C and
90±5% relative humidity for 240 hours.
temp. cycle test The part shall be subjected to 10 cycles. One
cycle will consist of:
evaluation standard
The part will be measured after
being placed at +25°C for 6
hours. After any tests, the
sensitivity should be within ±3dB
compared to the initial
measurement.
MECHANICAL CHARACTERISTICS
item test condition
soldering heat resistance Lead terminals are immersed in solder bath of
270 ±5°C for 2 ±0.5 seconds.
PCB wire pull strength The pull force will be applied to double lead
wire:
Horizontal 4.9N (0.5kg) for 30 seconds
vibration The part will be measured after applying a
vibration amplitude of 1.5 mm with 10 to 55 Hz
band of vibration frequency to each of the
3 perpendicular directions for 2 hours.
drop test The part will be dropped from a height of
1 m onto a 20 mm thick wooden board 3 times
in 3 axes (X, Y, Z) for a total of 9 drops.
evaluation standard
No interference in operation.
No damage or cutting off.
After any tests, the sensitivity
should be within ±3dB compared
to the initial measurement.
TEST CONDITIONS
standard test condition a) temperature: +5 ~ +35°C b) humidity: 45 - 85% c) pressure: 860-1060 mbar
judgement test condition a) temperature: +25 ±2°C b) humidity: 60 - 70% c) pressure: 860-1060 mbar
page
date
DESCRIPTION: electret condenser microphone
4 of 4
06/2008
20050 SW 112th Ave. Tualatin, Oregon 97062 phonephone 503.612.2300 faxfax 503.612.2383
PART NUMBER: CMA-4544PF-W
PACKAGING
