The output of this mp23ab01dh is abnormal?

littleshrimp

The output of this mp23ab01dh is abnormal? [Copy link]

 mp23ab01dh is an analog differential output microphone https://www.st.com/resource/en/datasheet/mp23ab01dh.pdf The output of the microphone soldered on the PCB was abnormal. I was afraid of poor soldering and damage, so I used the flying wire method to solder a new microphone I added 3.491 power supply to the VDD and GND (pin4=GND, pin1=VDD) of the microphone. I used a multimeter to measure the voltage of output+ and output-, both of which were 3.480V Using an oscilloscope to measure output+ and output-, there was no change in the waveform when there was sound After powering off, I used the multimeter diode mode red pen to connect to GND, and used a black pen to measure output+ and output-, which were 0.828V and VDD was 0.599V

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Look at the manual first.