AD2S80A: FAQ

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  • AD2S80_arc min meaning

    Question I want to know the meaning of "Accuracy 8 arc min" in the datasheet of AD2S80A. Does it means the error is 8 arc per minute? Answer The accuracy of an ADC is measured in terms of LSB. The…
  • ad2s80a: Accuracy vs. temperature

    Question What is the difference between the AD2S80ABD and the AD2S80ASD ? Is the ASD just more classified than the ABD according to accuracy/temperature? I mean, has the ASD and the ABD the same accuracy…
  • AD2S80A: Can 2 AD2S80As be used with the same inductosyn?

    Question Can 2 AD2S80As be used with the same inductosyn? Answer Yes, but they must have the same reference frequency from the same excitation source. I don't see any problem in principle with connecting…
  • AD2S80A: Can I tie both INHIBIT and ENABLE to 0V ?

    Question Can I tie both INHIBIT and ENABLE to 0V ? Answer No. The normal operation is that INHIBIT is inactive (HI) until you want to read data, when you wish to read data, you take INHIBIT LO (preventing…
  • AD2S80A: Noise on DIR output

    Question The DIR output has a lot of noise on it. What could be the cause of his noise? Answer The DIR output is asynchronous, so in theory it can change in between LSBs even though the direction of…
  • AD2S80A: Output is not linear, 2-3 degrees phase difference between sine and cosine input,

    Question R/D-converter's output is not linear (0-2degrees of non-linearity): There is a small phase shift of 2-3 degrees phase difference between sine and cosine input. R/D-converter's output is not…
  • AD2S80A_closed loop bandwidth

    Question How could I choose the closed-loop bandwidth (fBW with the AD2S80A Are there guidelines. Resolution Ratio of Reference Frequency/Bandwidth 10 2.5 : 1 12 4 : 1 14 6 : 1 16 7.5 : 1 Could…
  • AD2S80A_high voltage interface problem

    Question Now there is one customer would like to use AD2S80A to replace our older and high price parts RDC1740 and RDC1742. But she encountered the problemthat her input signals are 16V, which is higher…
  • AD2S82A: Maximum tracking rate.

    Question We need the maximum resolution of conversion in the entire range of the motor (0-1350rpm). AD2S82 datasheet says that 16bit resolution is allowed only up to 975rpm. Discarding what datasheet…
  • Difference between part AD2S80ATD/B and AD2S80ATD?

    Question What is a difference between part AD2S80ATD/B and AD2S80ATD? In other words could you explain what suffix /B means in the part number? Answer The accuracy spec in the datasheet for AD2S80ATD…

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