MIKROE-3445, MIC 2 Click Board for MCP6022 Dual, Rail-to-Rail, Low Noise Operational Amplifier

Reference Design using part MCP6022 by MikroElektronika

Manufacturer

MikroElektronika
  • Application Category
    Audio
  • Product Type
    Audio Power Amplifier

Associated Documents

For End Products

  • Audio Digitizing
  • Surveillance Audio

Description

  • MIKROE-3445, MIC 2 Click Board is equipped with a small electret microphone, accompanied by a suitable pre-amplifying circuit. The small electret microphone is not capable of providing sufficient line-level output, therefore, the pre-amp has to be used. The pre-amp circuit consists of a dual op-amp and a digitally controlled potentiometer IC. Thanks to the AD5171, it is possible to control the feedback loop gain of the MCP6022 op-amp over the I2C interface, in 64 discrete steps. The AD5171 digital potentiometer IC can lock-out its wiper by means of OTP fuse bit: once locked, it will permanently retain the programmed value

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