Measuring Digital MEMS Microphones – Frequency, Sensitivity, and Power Supply Rejection (PSR) Performance

This test suite contains 3 sequences to enable comprehensive testing of digital MEMS microphones:

  • Measurement of frequency and sensitivity using a calibrated source
  • Measurement of frequency using the ‘substitution method’, a solution for measuring frequency response where the source speaker cannot or is not equalized
  • Measurement of power supply rejection (PSR) performance