MSP430F6726A: about effective resolution(bits)

user5994067

Intellectual 820 points

Part Number: MSP430F6726A

Hi,

If the fsd24 clock frequency is 8 MHz, what is the effective resolution when the OSR is 1 to 1024?

best regards,

over 5 years ago

0 James Evans over 5 years ago

TI__Mastermind 49692 points

Hello,

Figure 5-19 in the datasheet illustrates how the SINAD increases as the OSR increases. For a given OSR (e.g. 256), you can convert the SINAD to ENOB using the equation in the following thread.

MSP430I2040 4 channel differential ADC for high resolution measurement

Regards,

James

0 user5994067 over 5 years ago in reply to James Evans

Intellectual 820 points

Thank you for answering.
By the way, can ENOB and effective resolution be the same calculation method?

Best Regards,

0 James Evans over 5 years ago in reply to user5994067

TI__Mastermind 49692 points

ENOB stands for "effective number of bits", so they could mean the same thing depending on your definition of "effective resolution". ENOB indicates the number of noise-free bits measured for a certain ADC configuration. Hope that helps!

Regards,

James

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MSP430F6726A: about effective resolution(bits)