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  • ADS1262: INPMUX register are not saved

    Part Number: ADS1262
    Other Parts Discussed in Thread: ADS1261, , TIPD188, TPS7A94

    Hi all,

    Due to the chip shortage, I am not able to source any ADS1261 (let me know if you have a secret stock, I am looking for QTY10).

    So I am trying the ADS1262 instead…

  • ADS1263: Status byte never shows new data with GPIO enabled

    Part Number: ADS1263
    Other Parts Discussed in Thread: ADS1261, ADS1262, ADS1261EVM

    Hello,

    I'm having trouble trying to use both the GPIO and ADC functionality.

    #define GPIO_PIN 0b00011110
    #define GPIO_DIR 0b00000000
    #define GPIO_DAT 0b00001100

    #define…

  • ADS1261: AC Excitation with IDAC

    Part Number: ADS1261
    Other Parts Discussed in Thread: ADS124S08

    Hello,

    I have a typical wheatstone bridge application with 4x active strain gage elements.  In my case I cannot use voltage excitation, and hence must use IDAC current excitation for the bridge…

  • RE: ADS131M08EVM: The connection of the 2 loadcells.

    Hi Alex,

    Thanks for the update.

    Filtering the excitation voltage can certainly help to remove some of the high frequency noise from the sensor output. Ideally, a load cell would be excited by the same voltage as the ADC reference voltage, so that any…

  • RE: ADS1263: ADS1263

    Hi Manisha,

    The designed resolution in the reference design is 15.6 bits or 200nV regarding 10mV full-scale output of the bridge. An ADC with higher resolution(24-bit) is usually used to account for the loss of dynamic also the effect from all other components…

  • RE: TS5A21366: Should the GND of this part be connected to a digital ground or an analog ground and why?

    Hi Sasank, 

    Thank you for reaching out to us.

    We mention connecting it to DGND to minimize interference from signals on AGND from analog parts on the design. 
    You'll have to check with your design if this is necessary.

    You can see our implementation…

  • RE: ADS1262: TDAC settling time

    Dear Chris,

    thank you for the answer. To describe my idea in detail please see attached schematics (filters ommited fro clarity)

    I need to measure temerature 20-30°C with highest possible resolution (microKelvin) My intention is to build bridge with…

  • RE: ADS1232 temperature drift

    Hi Theodore,

    Can I ask what you hope to gain by chopping the excitation polarity using AC excitation?  You may not get the results you are expecting relative to the effort involved.  AC excitation will only remove the error and offset of the load cell. 

  • RE: ADS1256: accuracy and noise free resolution in system level

    Hi Ilhan,

    "Resolution" is a measurement's repeatability. More repeatable results generally make for better measurements; however, just because a measure is repeatable doesn't necessarily mean the result is accurate.

    "Accuracy" is what…

  • ADS1262: Serial Interface waveform details

    Part Number: ADS1262
    Other Parts Discussed in Thread: TIPD188,

    Hi Chris

    Thank you for providing TIPD188 example code.

    One thing I noticed in your conversation with Mr. Shambhu, I can't find waveform in ADS 1262 data sheet, you shown in your answer.…

  • RE: ADS1262: Unable to capturing serial data coming DOUT/DRDY pin Need a example FPGA code

    Hi Bharat,

    Welcome to the TI E2E Forums!

    Unfortunately, we do not have any FPGA code examples that I'm aware of for this device. There is some Example C code for the ADS126x included in our TIPD188 Reference Design which might be helpful though.

  • RE: ADS1262: AC excitation

    Hi José,

    Referencing Equation 3 in the the Design Document for TIPD188, VOS2 is only removed from the measurement result if its amplitude does not change significantly between the measurements in Phase1 and Phase2. NOTE: There is a typo, equation…

  • RE: ADS1262: Signal problems

    Hi Mario,

    Is your Arduino providing 5V logic level signals to the ADS1262?
    Most micros are around 3.3V, in which case you'd need to supply DVDD with 3.3V to interface with such an MCU.

    For now it is probably okay to ground the input pins while you…
  • RE: Microgram Scale design

    Hello Christian,

    The TIPD188 is an amplifier for strain gauge based scales and not related to my "force displacement" milligram scale.

    VCC is +5V for the entire board. No "split" supplies are required.

    The VGA devices used in the…
  • RE: no part number.

    Hello Christiaan, 

    Please provide the identification numbers of these circuits you found on ti.com.  Also provide a block diagram of the product you are designing as this will be very helpful to determine what is required. 

    If you look through the TI, Reference…

  • RE: ADS1261: Data sheet reference to +/-7mV input span

    Hi Andrew,

    The minimum allowable reference voltage for the ADS1261 is 0.9V. A 9mV reference would be way out of spec and result in very poor performance.

    Instead of trying to scale the input signal to the ADC's full-scale range, it is much more important…

  • ADS1263: code example

    Part Number: ADS1263
    Other Parts Discussed in Thread: ADS1262

    as suggest by Chris, I go ahead but nothing get resolved. Issue is still there basic problem from my point of view when I see the example given by TI

    1. How to configure that which ADC get initialized…
  • RE: CCS/ADS1263: code example

    Hi Nigel,

    Welcome to the TI E2E Forums!

    I think those errors are a result of some of the compiler search paths being set incorrectly in the project; all of the required files should be there... I just imported the TIPD188 firmware into CSS 8.1 and ran…

  • CCS/ADS1263: code example

    Part Number: ADS1263
    Other Parts Discussed in Thread: TIPD188, ADS1262

    Tool/software: Code Composer Studio

    I am trying to compile the firmware for the reference design TIPD188

    I initially had over 100 errors mainly related to missing drivers for the U…

  • RE: Compiler/ADS1262: MMB0 USB connection, drivers for connection with my own application

    Hi Ignacio,

    Unfortunately, I don't have any readily available C code to control the MMB0 from a PC.

    If you have another processor that already communicates with the PC, then I would recommend jumper wiring it to the ADS1262EVM daughter card and…
  • RE: Compiler/ADS1262: MMB0 USB connection, drivers for connection with my own application

    Hi Ignacio,

    Welcome to the TI E2E Forums!

    If you go to the ADS1262EVM-PDK product folder and look under the "Software" header, you can find the ADS126xEVM-PDK LabVIEW Source Code, which will allow you to control the ADS1262EVM in LabVIEW and…

  • RE: CCS/ADS1263: code example

    Hi Himanshu,

    Welcome to the TI E2E Forums!

    There is some ADS1263 example code that was released along with the TIPD188 reference design. Please, refer to the "TIPD188 Firmware" download, under the "Software" section. I hope that helps you out!…

  • ADS1262: chop mode and latency conversion time

    Part Number: ADS1262
    Other Parts Discussed in Thread: TIPD188, ADS1261

    I'm working on a design to read bridge sensor 350Ohm, supplied at 5V, with a full scale of +/-10mV.

    I'm planning to use the ADS1262, in similar configuration described in TIPD188…

  • RE: ADS1262EVM-PDK: ADS1262 - 4 wire bridge measurement

    Hi Gianfranco,

    Welcome to the TI E2E Forums!

    With the provided ADCPro software, I don't know of an easy way to implement AC excitation...
    The problem is that ADCPro only lets you configure the ADC registers once, and then collect a block of data for…

  • RE: TIPD188: Is possible to use the same approach of ratiometric and ac excitation with ads1256?

    Thanks a lot Chris. I got your point. I will go for a design w/ ads1262 and I  will also give a try with current source excitation

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