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  • ADS131M04: Input impedance of 10Mohm

    Part Number: ADS131M04 Hello, My customer would like to have 10Mohm input impedance. So i use 2x 5Mohm in differential but If my understanding is right, the input impedance is 330K for low gain and 1Mohm for high gain. I'm wondering the this will…

  • RE: ADS131M04: ADS131M04: Test data shows phase unstable after implement phase calibration

    Paul, I haven't heard from you for a while, so I wanted to check with your customer's problem with the phase setting and collection of data. I thought that this problem may be because of the method of reading data after a pause in data collection that…
    • Answered

  • ADS131M04: why the differential cap should be about 10 times the value of the common mode cap in the RCR anti aliasing filter for delta sigma ADC

    Resolved
    Part Number: ADS131M04 Hi, in the post below [FAQ] Delta-sigma ADC anti-aliasing filter component selection - Data converters forum - Data converters - TI E2E support forums After calculating the Cdiff, Ccm is said to be about 1/10 Cdiff, but why…
    • Resolved
    • Answered

  • ADS131M04: ADS131M04 pseudo differential inputs

    Resolved
    Part Number: ADS131M04 Hi TI support, We are considering the ADS131M04 in our design. Can you please help with the questions below Q1) Does this device supports pseudo differential inputs? INxP -> single-ended analog input centered at mid rail. INxN…
    • Resolved
    • Answered

  • ADS131M04: Input Voltage Range

    Resolved
    Part Number: ADS131M04 Hello, I have a question regarding the input voltage range of the ADS131M04. As stated in the Absolute Maximum Ratings section of the data sheet, the max voltage for each AINxP/AInxN pin is min: AGND - 1.6V and max: AVDD + 0…
    • Resolved

  • ADS131M04: problems reading and writing registers with adc

    Part Number: ADS131M04 Hello We are having a difficult time with communication with this device in term of reading and writing the registers. The data reads back fine but reading and writing registers results in unexpected values coming back. Here…

  • ADS131M04: design advice

    Part Number: ADS131M04 Other Parts Discussed in Thread: ADS131A02 , , ADS122C04 , ADS1234 Dear Madam/Sir, We are designing a weight measurement system with the bridge structure. In application they all for load cell applications but all have multiplexer…

  • ADS131M04: Help on using readData(adc_channel_data *datastruct); creating a type defined structure in main.c

    Part Number: ADS131M04 Dear all, I am in the process of porting the ASD131M0x.c code in sbac254b ( http://www.ti.com/lit/zip/sbac254 ) to an STM32F103 and/or an STM32F401 processor. As far as I can tell, all works fine, but I am struggling with the…

  • ADS131M04: ADS131M04 Input Impedance

    TI Thinks Resolved
    Part Number: ADS131M04 Hi, We're considering using the ADS131M04 for an application in which the ADC would be driven by an active filter. We're interested if there is a more detailed model of the input impedance of the chip. It seems from the input…

  • ADS131M04-Q1: Behavior DRDY is not as expected and register values read are incorrect

    TI Thinks Resolved
    Part Number: ADS131M04-Q1 Other Parts Discussed in Thread: ADS131M08 Hi, I am using ADS131M04-Q1 and interfacing with FPGA using Verilog. The ADC is configured as: MODE = 16'h0100, CLOCK = 16'h0F0A, GAIN1 = 16'h7777 and others default. ADC clock fCLK…

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