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  • ADS8638: HVDD Supply doubt

    TI Thinks Resolved
    Part Number: ADS8638 Other Parts Discussed in Thread: ADS8686S , ADS8668 , Tool/software: Hi, Is it okay to supply +/-5V to the HVDD and HVSS pins of the ADC? If not, could you recommend similar adcs that can input bipolar voltages with 5V supply with high…
    • Answered

  • ADS8638: How to read +/-12V and 0-10V ?

    Resolved
    Part Number: ADS8638 Other Parts Discussed in Thread: REF54 Tool/software: Hello, I am using the ADS8638 with an external reference of 3V in order to read +/-12V, everything is working fine. But now I need to be able to read +/-12V or 0 to 10V, with…
    • Resolved
    • Answered

  • ADS8638: Temperature acquisition accuracy

    Resolved
    Part Number: ADS8638 Tool/software: Hello, Referring to the previous thread, I have the exact same question and I fail to understand how figure 71 answers it. The datasheet says the typical accuracy is 5% of FSR. There are no full scale range specified…
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    • Answered

  • ADS8638: Does EPAD need to be grounded?

    Resolved
    Part Number: ADS8638 Tool/software: Hello, I'm using this part ADS8638SRGERin a design. I couldn't find anything regarding the exposed pad (EPAD). Does it need to be grounded or left floating? Thanks
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    • Answered

  • ADS8638: ADS8638SRGER lifecycle

    Resolved
    Part Number: ADS8638 Hi, We are in the process of replacing an ADC in a design which has gone EOL. The TI ADS8638SRGER is an excellent fit, but I was wondering if it is recommended for new designs, or if there is a planned end of life date for this part…
    • Resolved

  • ADS8638: ADS8638 External reference decoupling cap value

    TI Thinks Resolved
    Part Number: ADS8638 Hello~ I have a question about using the ADS8638. datasheet Page 24. in text => "Whether it is an internal or external reference, be sure to decouple the REF terminal to REFGND with a 10µF capacitor. Place the capacitor close to the…
    • Answered

  • ADS8638: Best voltage for HVSS and HVDD for long term use

    Resolved
    Part Number: ADS8638 Other Parts Discussed in Thread: TLV4171 Hi, I am using an ADS8638 in my design to read +/-12V analog signal, it's working good with HVSS = -15V and HVDD = +15V. However I could save some money and space by using a +/-12V power supply…
    • Resolved

  • ADS8638: ADS8638 SPI communication problem

    Part Number: ADS8638 HI! I have an issue with ADS8638 thru SPI communication Once I read the register, The IC can't send anything. is there any problem with schematic or communication control? Here I attached my schematic. Thanks
    • Answered

  • ADS8638: MUX and Supply voltages at 0-10v working scenario

    Resolved
    Part Number: ADS8638 Other Parts Discussed in Thread: ADS8668 Hi, I am using ADS8638, 8 channel ADC for inputs of 0-10V. I am giving 3.3V as supply (DVDD & AVDD) and 10V for HVDD. Is it necessary to give HVSS mux voltage as -10V? Can I give 0V? How is…
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    • Answered

  • ADS8638: how to read thermistor configured with bypass capacitor

    Resolved
    Part Number: ADS8638 In page 64 of the DS, the section named "DRIVING ANALOG SIGNAL INPUT WITHOUT AN OPERATIONAL AMPLIFIER" describes the use of a bypass capacitor and the sampling rate for determining the output impedance of the circuit. Can you explain…
    • Resolved

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