Hi Dheeraj, welcome to our e2e forum and thanks a lot for choosing a TI ADC. From the scope shots you showed and your explanations, you don't seem to do anything wrong at first sight. Can you try the following things: Set MUX0[1:0] = 01b. In this case you should definitely see the conversion data change. Send the STANDBY command first before making any register bit changes. Change the register bit settings. Send the WAKEUP command to start conversions with the new register settings. Have you verified your WREG command is working by reading back the register settings using the RREG command? As you seem to be able to change the word length, I suppose the WREG command is okay. Regards, Joachim Wuerker
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