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  • RE: AM2634-Q1: ADC CALIB pin and ADC VREF query

    Hey Vishnu, Regarding the ADC_CAL[0:1] pin usage, please find excerpt from our ADC expert below: Abhijit Das said: The CAL0 & CAL1 pins can be driven with any precision or ratio-metric voltage on the board and can be used to calibrate the error of the…
    • Answered

  • RE: TMS320F28376S: ADC VREF voltage range

    Resolved
    Hi Adam, Adam S said: I also have doubts because on launchpad LAUNCHXL-F28379D VREFHI is 3V, so I thought it's max for some reason. 3V VREF is used on the LaunchPad design, but the F2837x device can take up to 3.3V. With the 3V VREF the ADC input range…

  • MSPM0G1106: using ADC, VREF

    TI Thinks Resolved
    Part Number: MSPM0G1106 Other Parts Discussed in Thread: LM4040 I am looking to use 8 of the ADC pins for measuring voltages. 1) in terms of accuracy it seems that an external reference helps a little bit. I was wondering if you could quantify how much…

  • RE: ADC selection

    Hi Clemens, I'd recommend you check out ADS1262 and ADS131M02. Not sure what kind of pressure sensor you have but you can always check out the reference block diagrams and click on the analog front end block and see what data converters are recommended…

  • TPS61089: improve Vref accuracy to 1%

    Part Number: TPS61089 Hi Team, my customer is asking if we could do screen to improve Vref accuracy to 1%. If not, coudl you please kindly help provide the reason? Thanks. BRs Given
    • Answered

  • TMS320F28335: Isolation of Analog and Digital ground and ADC reference voltage selection

    Resolved
    Part Number: TMS320F28335 Dear Experts, I am working on the design of a custom F28335 board. There are two issues that are bothering me at this point of time. Firstly, it's about about, whether Analog and Digital grounds can be isolated. Secondly,…
    • Resolved
    • Answered

  • RE: DRV8462EVM: How to activate Internal Vref

    Resolved
    Hey Jacob Thank you very much for your support and the Communication snipets. They helped me to understand: You write 0x20 to RSVD of ATQ_CTRL18 while I tried to write 0x12 to CTRL13: ... I finished my tests with the "hardware workaround" where i connected…

  • LAUNCHXL-F28379D: VREF selection and impact on full scale ADC value

    TI Thinks Resolved
    Part Number: LAUNCHXL-F28379D All of the signals that I want to measure are max 3.3V. JP6 can of course connect 5V to VREF. If I use this, do I go with the 3.3V max, and a "full-scale reading" corresponds to 3.3V, and I lose the resolution of values above…
    • Answered

  • SYSCONFIG: Bug in the ADC setup in Sysconfig -- can''t select a value for VREFHI

    Resolved
    Part Number: SYSCONFIG Other Parts Discussed in Thread: TMS320F280037 Sysconfig allows you to setup the reference for the ADC, however, you can only specify the voltage reference for the internal reference. The external reference can't be specified. In…
    • Resolved

  • RE: INA240-Q1: INA240 use resistor divider for VREF, output error due to using single-end output configuration

    Hi Scarlett, For INA240A3, Ri=25k and Rf=125k. The tempco of the internal resistors is -40ppm/ºC. Regards, Guang

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