https://devzone.nordicsemi.com/f/nordic-q-a/90237/nrf5240-i2sHI 1. If we choose a 28.8MHz crystal oscillator for the MCLK of I2S, will it affect BT? 2. In our design, the power supply is VBAT, and the VDD_nRF setting is 1.8V. Does it affect the RF power of BT? Thanks!en-USTelligent Community 13Thu, 21 Jul 2022 12:56:39 GMThttps://devzone.nordicsemi.com/thread/378102?ContentTypeID=1Thu, 21 Jul 2022 12:56:39 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8b50a07a-f871-4ffb-be7f-2b4699528d4bSimonr<p>Hi</p> <p>1. I&#39;m unsure whether you&nbsp;<strong>should&nbsp;</strong>choose a 28.8MHz crystal oscillator for your I2S, I guess that depends on the I2S device, but it should not affect the radio or Bluetooth performance.</p> <p>2. As long as the battery is not mounted very close to the antenna there shouldn&#39;t be any degradation in RF performance due to the battery either.</p> <p>Best regards,</p> <p>Simon</p><div style="clear:both;"></div>