MEMS microphone is a popular topic in the electronics industry than ECM(electret condenser microphone). MEMS microphone include small size, low cost, low power consumption, withstand high-temperature and high sensitivity functions. Traditional MIC replaced by MEMS microphone in the future.
Digital Microphone Test System Comparison
Digital microphone test system(Simple)
Digital microphone test system MP(HXT)
Advantage
Defect
Advantage
Defect
Low cost of testing and use EV Board of microphone component factory.
It requires analog test system.
Provide several modules of MIC test.
The cost of test station is than simple MIC test.
Lights of simple LED to display the microphone sensitivity.
Hight cost of test and provides dual-microphone test.
Provide test items and detect the MIC.
The fixture must be designed into several modules of MIC test.
Left and right channel. (analog signal output)
Test item is low-level.
Single test station provides for MP testing and low cost.
Not detect bad MIC.
HXT's MEMS Digital Microphone Test Solution：
HXT integrates measurement equipment of NI and sound test library of Sound and Vibration Toolkit. Provide MEMS digital MIC testing and customized solution.
Multi-Channel MEMS Digital Microphone Signal Grabbing and Decode Solution：
Provide multic-channel digital I/O：56~96 I/O pin. (Max：forty microphones test at the same time)
Provide multic-channel analog audio：4~8 channels analog audio testing.
Integrate Analog MIC and power consumption test：
Power Consumption Test (operation/standby/short?)
Testing operation mode of MIC and standby mode of power consumption.
To integrate DSA card and provide analog audio signal testing.
To integrate DSA card and provide Working power and power consumption testing.
Save Audio Test Data and Test Results real-time：
1.Grabbing digital signal output of digital microphone at the same timeand store the original signal
2.Store the test results ：Sensitivity、THD、THD+N、SNR、R/L Balance
3.Test report output
HXT-MIC Test Items
Digital / Analog audio testing solution/Electrical attributes testing
Open / Short
Power Consumption (operation/standby)
Power Supply Rejection Ratio, PSRR
Sensitivity
THD / THD+N
Frequency response
Noise @ select frequency range
SNR @ select frequency range
Phase
Programmable power supply for mic.
Automatic bin select
AOI Vision inspection
To integrate system and mechatronics automation
Friendly User Interface and Parameter Set：
1.To integrate 1D/2D barcode
2.Users can self-adjustment and definition of test specifications
Customized Fixture and System Design：
1.Design fixture according to clients' projects
2.To integrate multi-channel EEPROM burn
3.To integrate camera modules and imagine testing
Application：
302新竹縣竹北市嘉豐十一路一段100號10樓之7(富翼大樓)
Tel:+886-3-658-3862
10F.-7, No.100, Sec. 1, Jiafeng 11th Rd., Zhubei City, Hsinchu County 302, Taiwan (R.O.C.)
