Dear,
Is the SBIAS used for a reference voltage of SDADC?
If I set the value as 0.9V in single-ended mode, can I just calculate as follows for transferring the ADC value to voltage?
1unit = 0.9 / 0xFFFFFF; //SBIAS(0.9V) / 24bit(0xFFFFFF) = 0.05364418349529406uV
1unit = 1.8 / 0xFFFFFF; //SBIAS(1.8V) / 24bit(0xFFFFFF) = 0.1072883669905881uV
or
Do I have to use the max input voltage?
Thanks,
Hi Captain,
Captain said:Is the SBIAS used for a reference voltage of SDADC?
As mentioned in chapter 15.5.3 of the hardware user's manual, "SBIAS is involved in generating reference voltages used in the…
As mentioned in chapter 15.5.3 of the hardware user's manual, "SBIAS is involved in generating reference voltages used in the ΔΣ A/D converter", so yes.
Captain said:If I set the value as 0.9V in single-ended mode, can I just calculate as follows for transferring the ADC value to voltage? 1unit = 0.9 / 0xFFFFFF; //SBIAS(0.9V) / 24bit(0xFFFFFF) = 0.05364418349529406uV 1unit = 1.8 / 0xFFFFFF; //SBIAS(1.8V) / 24bit(0xFFFFFF) = 0.1072883669905881uV
I'm not really sure as I have not tried it as I don't have an H1D device. But why not just follow the formula mentioned in the user's manual?
JBIf this response, or one provided by another user, answers your question, please verify the answer. Thank you!Renesas Engineering Community Moderatorhttps://community.renesas.com/https://academy.renesas.com/https://en-support.renesas.com/knowledgeBase/
Thanks for your response. I will try to calculate with that.