• State Resolved
  • Locked Locked
  • Replies 6 replies
  • Subscribers 79 subscribers
  • Views 736 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Compiler/MSP430F6736A: msp430f6736A

satish sharma13
Intellectual 470 points
Part Number: MSP430F6736A
Other Parts Discussed in Thread: MSP430F6736

Tool/software: TI C/C++ Compiler

Sir/Mam,

please provide me the explanation of 

Vid , Vi , Vic 

Differential input voltage for specified performance,

Differential full scale input voltage..........

Common-Mode input range...

Absolute input voltage

  • 0
    TI__Genius 10860 points

    Hi Satish,

    please note that the image you've taken is actually from the MSP430F6736, not MSP430F6736A. Please check SLASE46A.

    This table displays the Power Supply and Recommended Operating conditions. This means it shows what supply voltage is needed and what input voltage is allowed for the Sigma-Delta converter. Depending on the mode in which the SD converter shall be used, the allowed input voltage is different. This is displayed through Vi, Vic and Vid.

    For further understanding you might want to check section 29.2.6 Analog inputs in the SD24_B chapter of the device Family User's Guide.

    Best regards,

    Britta

  • 0 in reply to Britta Ruelander
    Intellectual 470 points

    Sir/Madam,

    if my Gain is 32

    and i am using internal reference 

    what is the maximum voltage which i can apply so that i get correct sample,

    please provide such things with calculation......

  • 0 in reply to satish sharma13
    TI__Genius 10860 points

    Hi Satish,

    please review the table as it includes the information you're looking for as far as I understood your request.

    Please also take a look at Note (2) below the table.

    Thanks and best regards,

    Britta

  • 0 in reply to Britta Ruelander
    Intellectual 470 points
    sir/madam,

    can you provide me the calculation part
    i have selected internal reference which is ~1.2
    gain is 32


    and,

    Is this Vid is the difference of the voltages which we apply accross the terminal of converters and this difference voltage is the maximum
    voltage to get sepecified result , if i applied greater or less than this it gives wrong result.....
  • 0 in reply to satish sharma13
    TI__Genius 10860 points

    Hi Satish,

    if you have a look at the Vid,fs: differential full-scale input voltage you have

    -Vref/GAIN as the minimum voltage you can apply and +Vref/GAIN as the maximum voltage you can apply.

    You can use your reference and gain settings and calculate the maximum and minimum input voltages.

    satish sharma13 said:
    Is this Vid is the difference of the voltages which we apply accross the terminal of converters and this difference voltage is the maximum
    voltage to get sepecified result , if i applied greater or less than this it gives wrong result.....

    Can you speciy your question? if you apply a voltage within the specified range you shouldn't see a wrong result, you're simply not sing the full scale range so you might not get the optimized resolution. If the input voltage is greater than the allowed range your conversion result will be saturated though.

    Best regards,

    Britta

**Attention** This is a public forum