Aamir Qureshi

MK22FN512 current too high in using ADC and DSP

Discussion created by Aamir Qureshi on Aug 26, 2016


we are using MK22FN512 kinetis MCU 153uA/Mhz. It is used in audio processing application so 2 flip flop 320 bytes buffers sampling ADC via DMA and using CMSIS DSP library to implement some filters (A,C,Z).


The current consumption is 17mA running at 40MHz. which seems a lot to me,


Any suggestions how to optimize the power consumption in this application??