MPA466 1/2-inch free-field Microphone
MPA466 is the TEDS version of 1/4” prepolarized free-field measurement microphone MPA416.
It has the information of microphone model, serial number, sensitivity, reference frequency, calibration date, and other information to facilitate plug and play and reduce the setup time of the testing system.
Features:
● 1/4” Free-field Microphone
● Sensitivity (@250 Hz):50 mV/Pa (-26 dB re 1V/Pa)
● Frequency response: 20 Hz ~ 20 kHz (±3 dB)
● Dynamic range: 29 dBA ~ 127 dB
● Polarization voltage: 0V (prepolarized)
● Pressure equalization: front-vented
● Optional phase matching
● ICCP-powered preamplifiers (integrated, non-separable)
● With TEDS (IEEE 1451.4)
Applications:
● Low-cost microphones
● Acoustic performance measurement of materials via impedance tubes
● Array applications such as Nearfield Acoustic Holography (NAH) and Beamforming
● Production line product quality inspection
| Specification | |
|---|---|
| Response | Free Field |
| Sensitivity | 50 mV/Pa |
|
Self-noise
|
29 dB(A) |
| Upper Dynamic Limit | 29~127 dB |
| Frequency Range |
20 Hz ~ 20 kHz (complied with IEC 61672 Class 1 requirements at reference conditions) |
|
Power Supply
|
ICCP
|
| T.H.D | < 3% at 128 dB SPL |
|
Temperature Coefficient： (at 1000 Hz, at reference temperature 23°C) |
15 ~ 35°C: <±0.3 dB 0 ~ 40°C : <±1.5 dB -10 ~ 50 °C:<±3.0 dB |
| Humidity Coefficient | 20%~90% RH ; Sound Pressure Level Change < ±0.8 dB at 1000Hz at temperature 30°C, and reference 50% RH |
| Operating Temperature Range | -10°C ~ 50°C |
| Polarization Voltage | 0 V |
Download information:
MPA466
