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Error on the AD7849 datasheet?

on page 14 of AD7849 datasheet (https://www.analog.com/media/en/technical-documentation/data-sheets/AD7849.pdf), one side of R2 and R3 of AD588 is directly connected to +15V (see figure 21). but, on the AD588 datasheet (https://www.analog.com/media/en/technical-documentation/data-sheets/AD588.pdf), those two resistor (Gain Adj and Balance Adj) is connected to a +15V via a 39K resistor. which one is correct? can someone take a look? thank you

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  • Hi Peter109,

    Both configurations shown in AD7849 and AD588 data-sheet are valid. The configuration shown in AD588 data-sheet limits current to 100K ohm potentiometer, which helps to achieve fine trim range. If your application requires to achieve wider trim range then I would suggest to configure AD588 as shown in AD7849 data-sheet.

    Regards,

    Anshul  

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