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ADS1282EVM: Bypassing U7 & U14 on the EVM

Part Number: ADS1282
Other Parts Discussed in Thread: ADCPRO, , ADS1281

I am using the ADS1282EVM_PDK to evaluate my ADS1282 design. I am in the process of moving all the circuitry from the ADS1282EVM to my board and plan to continue to use the ADCPro platform to test the new configuration. Looking at the ADS1281/82EVM schematic Dated 21/Aug/2008 I have a question on U7 and U14. Is it possible to eliminate these components? Will the code fail to run? I can place a reset switch on my board. Is there a way signal to the code that a ADS1282 is the DUT?

Thanks

Dean Gacita

  • Hi Dean,

    You can probably remove U14 without any issues, but I'm unsure about U7...
    If you don't use any of signals connected to U7 and you have them tied or floating, then perhaps you can leave it off.

    The MMB0 and its software was created before my time so unfortunately I am not sure about the implementation and how easy it would be to get it to interface with a custom PCB. Are you providing the MMB0 connector headers, or will you be jumper-wiring from the MMB0 to your board?

    If I was in your shoes I would probably be trying to interface with my own MCU at this point. If I could jumper wire the MMB0 to the custom board and get it to work great, but I'd probably be a bit pessimistic and not counting on this to work.

    Best regards,
    Chris
  • I agree on the starting to use my own MCU however my management is try to cut cost and bring in the schedule which puts me in these types of situations. Also yes I will be using the connectors to interface with the MMB0. Also I agree with removing U14 but U7 will be tricky. I am sure that the code polls the I2C bus to determine which board is being tested.

    As always thanks for all your help.

    Dean Gacita