• Resolved

About microphone IC product


We are working on the microphone input chain on the MSP430f5438 expermenter board, whose schematic is showed below.

We simulated it in Multisim and it showed a cutoff frequency of around 4kHz for the low-pass filter. But for our application, we need that to be more than 10kHz. Since we have many same boards need this modification, I would like to ask if there is any commercial IC product available for this. Maybe something similar to the following circuit (I saw it from another one's post in this forum).