Ltc2439-1 in SPI communication data output is high first out or low first out?

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  JellenieR

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  Jan 14, 2020 +1 verified

  Hi,

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  ghoover

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  Jan 14, 2020 +1

  Looking at the timing diagram of Figure 3a, I think there could be something wrong with your communication with the ADC. The first two bits should always be zeros. Can you provide an oscilloscope photo…

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  ljln119

  Jan 16, 2020 in reply to ghoover +1 verified

  When B0 is sent, the received data is hexadecimal 88,40, F0.Actual channel B0= 0.260v.When sending B1, the received data is hexadecimal E8,A7,FC, and the actual channel B1=2.495V.The Numbers don't match…