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Application note of a front end opamp to allow the ADS1115 ADC to accept true bipolar of +/- 2 volts

Other Parts Discussed in Thread: ADS1115

Hi Team,

We have a customer requesting for an application note of a front end opamp that will allow the ADS1115 ADC to accept true bipolar of +/- 2 volts. I found the two applications notes below but I just want to make sure that the information in the documents are what the customer are looking for.

https://www.ti.com/lit/an/sloa099/sloa099.pdf

https://www.ti.com/lit/an/sloa054e/sloa054e.pdf?

Regards,

Danilo