Page 17 - iSEMconCatalog

SPECIFICATIONS Values for 23° Celsius
PERFORMANCE ELECTRICAL
Frequency Response characteristic Free-Field Output Impedance < 200 Ω
Polarization Voltage Prepolarized Supply voltage 2.5…52Vdc
Nominal Sensitivity @1kHz 3mV/Pa
Sensitivity temperature drift See diagram PHYSICAL
Microphone Polarity Non-Inverting Housing Material Stainless Steel
Frequency Response calibrated 10…20.000 Hz Sealing O-ring/Polyurethane/Epoxy
Frequency Response IEC61672 *1 class 2 Output Connector SMB male
Inherent Noise100-10000 Hz <30dB typ. Dimensions Ø ¼“(7mm) x 3.7“(94 mm)
Inherent Noise 1/3 Oct. <15dB typ. Weight 0.3 oz (10g)
Max. SPL. (3% distortion limit) > 125dBspl
Max. SPL. (3% distortion) typ. = 127 dBspl CONFORMITY
IEC 61000-6-1;
ENVIRONMENTAL
Operating Temperature range -10…+55° SPECIAL FUNCTIONALITY
Storage Temperature Range -20…+90° Voltage surge protection 
Operating Humidity Range 0…90%r.H. EMC noise filter 
Axial Vibration Sensitivity ~ 50dB

FREQUENCY RESPONSE

5
microphone frequency response vs
4 IEC61672 class1(ye) and class2(gn) tolerance limits
3
2
1
0
-1
-2
-3
-4
-5 10 100 1000 10000 100000
Ampiltude BIAS freefield BIAS diffusefield Phantom SA-XBF freefield
Frequency

Class1 upper limit Class1 lower limit Class2 upper limit
Class2 lower limit

The diagram above shows the typical frequency respon- CALIBRATION DATA FILE FORMAT
se of an iSEMic 725TR microphone. Please note, that
each microphone comes individually calibrated for free- Human readable ASCII file: 1/6 octave
field and diffusefield.
;www.iSEMcon.com freefield
There is only a minor change in microphone sensitivty ;Sensitivity 2.40 mV/Pa @1kHz
while being powered from Bias power (e.g. 2.7V 2.2k— 10.00 -0.02
iPad) or regular Phantom power (48V 6.8k). 11.26 0.10
……….
Please note, that the use of the SA-XBF results in an 19992.19 0.93
about 1dB roll-off at 10Hz due to adapter internal ^ frequency (Hz) ^amplitude response (dB)
coupling capacitors.

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