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ADS1293: Comparison with ADS1294 and ADS1194

Austin Pua
Prodigy 80 points
Part Number: ADS1294
Other Parts Discussed in Thread: ADS1194, , ADS1293

Hi,

Thanks for taking the time to read my post.

I am trying to build a portable EMG application using one of the ADS ICs. Initially, I wanted to use the ADS1294 as the main IC to build my circuit but then I came across 2 other similar ICs, ADS1194 and ADS1293, which are both much cheaper.

Firstly,  I found it weird why the ADS1293 was not included as part of the ICs in the ADS129x datasheet. Is it because there are significant differences between the ADS1293 and ADS1294 other than the number of channels? If so, may I ask what are the differences?

Secondly, I also came across the ADS1194 IC. I compared the respective datasheets of ADS1294 and ADS1194 and found that there is not much difference between them other than the number of bits for ADC and the ADS1294 having the integrated respiration impedance measurement(which I do not need).  Hence, may I ask if it is suitable for me to replace the ADS1294 with the ADS 1194 or is there any other significant differences which I have to take note of?

Thanks!

  • 0
    TI__Guru 50661 points

    Hi Austin,

    Thanks for your post and welcome to the forum! 

    A quick summary of our devices can be found in the BIOFAQ in my signature below. 

    The ADS1293 is a different device entirely whereas the ADS1/294/6/8/R are all from the same core. I recommend taking a look at the register maps for both to see the differences. Functionally, they achieve similar results, but there are some differences. Just a note, not all of the devices above have the respiration feature, they are denoted with an R at the end of the device name. 

    There are some additional performance differences between the ADS1194 and ADS1294 which can be seen in the BIOFAQ post. 

    Take a look at the material I pointed out and let me know if you have more questions!