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Original question:

ADS1298: The performance difference between the internal reference and an external reference

ADS1299-4: External Reference Voltage Requirements

Hong Juyeong
Prodigy 10 points
Part Number: ADS1299-4
Other Parts Discussed in Thread: ADS1299, REF6225

Are there any voltage requirements for using an external reference?

I am thinking of using a REF6225 2.5V reference w/ integrated buffer for ADS1299.

However, the datasheet gives a nominal reference voltage of 4.5V, so I want to know whether 2.5V references are OK.

Thanks in advance.

  • 0
    TI__Mastermind 19815 points

    You can refer to the external reference voltage driver in ADS1299 datasheet page 25 figure 26.

    TI can only tested the parts suggested in the datasheet. TI cannot guarantee performance for the parts not tested and not listed in the datasheet. Customer will have to test themselves.

    Please make sure to meet the requirement in Section 7.

    Thanks.