There is a difference in serial interface of NRF52840-QIAA-R7 and NRF52840-QIAA-R but its datasheet is same in Digi-Keyhttps://devzone.nordicsemi.com/f/nordic-q-a/93640/there-is-a-difference-in-serial-interface-of-nrf52840-qiaa-r7-and-nrf52840-qiaa-r-but-its-datasheet-is-same-in-digi-keyNRF52840-QIAA-R7:- Sensitivity: -103dBm Serial Interfaces: ADC, I²S, PDM, PWM, SPI, TWI, UART, USB NRF52840-QIAA-R:- Sensitivity: -96dBm Serial Interfaces:- I²C, I²S, SPI, UART, USB There is a difference in serial interfaces of nRF52840.en-USTelligent Community 13Mon, 07 Nov 2022 13:23:33 GMTRE: There is a difference in serial interface of NRF52840-QIAA-R7 and NRF52840-QIAA-R but its datasheet is same in Digi-Keyhttps://devzone.nordicsemi.com/thread/394437?ContentTypeID=1Mon, 07 Nov 2022 13:23:33 GMT137ad170-7792-4731-bb38-c0d22fbe4515:68f13d4c-4744-48e2-a50b-13b2dcbc9cd1Daniel Chisholm<p>Just an error by Digikey.&nbsp; The distributors usually get most things correct but they do make mistakes at times and I think this is one of them.&nbsp; Notice they also listed different Rx sensitivities.... -96 would be for standard 1Mbps and -103 would be for 125 Kbps</p> <p>They are the same device, one is on a 7&quot; reel the other is a 13&quot; reel.&nbsp; So it is correct that they both have the same datasheet.</p><div style="clear:both;"></div>