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  • ADS122U04: IDAC configuration not working

    Resolved
    Part Number: ADS122U04 Other Parts Discussed in Thread: ADS1248 , We are designing a board using the ADS122u04 to replace one designed with the ADS1248 and I'm stuck on configuring the IDAC. I don't seem to be able to get excitation current flowing. The…
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    • Answered

  • ADS122U04: GPIO0 and GPIO1 purpose/use

    Resolved
    Part Number: ADS122U04 What is the purpose of GPIO0 and GPIO1? I can see that GPIO2 can be configured as DRDY, but I can't see any use for GPIO's 0 or 1.
    • Resolved

  • RE: ADS122U04: ADS122U04 measurement Question

    Hi Jon, For the filter equation you would use just Rfilter as opposed to 2*Rfilter. As to the need to use 5V as opposed to 3.3V for the analog supply, the extended range is only required if the input voltage should exceed 3.3V. In the case of the single…
    • Answered

  • ADS122U04: Question regarding gain in ADC conversion equation

    Resolved
    Part Number: ADS122U04 Hello, I have a question regarding ADC gain in the ADS122U04. In our system we are taking a single ended measurement using a gain of 2 and a vref of 2.048V. I am using the equation LSB = (2 x vref / gain) / 2^24, and then multiplying…
    • Resolved

  • RE: ADS122U04: ADS122U04

    Hello Bob, I have purchased a Gems (UK) make Ratiometric Pressure Transducer - that measures 0 to 16 bar pressure and gives a corresponding output of 0.5 to 4.5VDC. [note: MEAS or Baumer make that works on 5vdc was not available immediately, so went for…

  • ADS122U04: Difference between ADS122U04 and ADS1220?

    TI Thinks Resolved
    Part Number: ADS122U04 Other Parts Discussed in Thread: ADS1220 , , ADS122C04 Hi Expert, Can you help clarify the difference between ADS122U04 and ADS1220? Is digital interface the only difference? (ADS122U04 UART, ADS1220 SPI)? If not, any other upgrade…

  • ADS122U04: ADS122U04

    TI Thinks Resolved
    Part Number: ADS122U04 Hello Bob, Thank you for replying to my earlier query regarding ADS122U04 interfacing with RTD PT100. In the same project I also need to use ADS122U04 for measuring Engine Oil pressure (in heavy vehicles) - using MEAS make M5100 series…
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  • RE: ADS122U04: ADS122U04 Communication and Device Setup

    Resolved
    Hello Bob, Thank you for your inputs. As you suggested, I did the following:- a) After Microcontroller powerup [and initialization of UART1 (for communication with ADS122U04) and UART5 (for sending out values to PC for debug purpose)] , I just sent out…

  • ADS122U04: validating the ADC functionality of ADS122U04

    TI Thinks Resolved
    Part Number: ADS122U04 hi, ADS122U04 device is used in my project, my task to validate the ADS122U04 device ADC functionality , from the device data sheet I had got some points to validate ADC functionality. please find the below table which gives the…

  • ADS122U04: Is there an easy way to convert 24bit A/D converted output of ADS122U04 into Temperature into Degree Centegrade?

    TI Thinks Resolved
    Part Number: ADS122U04 Hello Bob, What is the easiest way to convert 24bit A/D converted output of ADS122U04 into Temperature into Degree Centegrade? I have exactly followed the datasheet of ADS122U04 and assembled it's circuit on a general purpose PCB…

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