SNAA355 April   2021 TPL1401

 

  1.   Design Objective
  2.   Design Description
  3.   Design Notes
  4.   Design Simulations
    1.     Transient Simulation Results
  5.   Register Settings
  6.   Pseudo Code Example
  7.   Design Featured Devices
  8.   Design References

Design Objective

Key Input ParameterKey Output SignalRecommended Device

Input signal Level : 20mVrms

Frequency of operation : 20Hz–20KHz

Microphone sensitivity variation: ±3dB

Supply voltage : 5 to 12V

1Vrms Output Voltage with code dependent gain calibrationTPL1401, TLV906x

Objective: Calibration of microphone amplifier to adjust for the variation in sensitivity of the electret microphones.