ADC requirement for my application

Namitha K M

Other Parts Discussed in Thread: ADS1258, ADS124S06, ADS124S08

I am bit confused with the selection of ADC for my application kindly help me out with this. The requirements are I'm using around 10 sensors that requires 15 analog input pins it may include differential sensors also, as I'm using sensor I need internal PGA with Sigma delta architecture. I have looked for ADS1258 part but it is not having PGA. SPI interface needed with the controller.

over 5 years ago

0 Collin Wells over 5 years ago

TI__Guru 64315 points

Hello,

We may not have a device which satisifes 15 inputs with a PGA. However you can combine two devices to achieve the desired channel counts. Take a look at the ADS124S06 and ADS124S08, read the datasheet carefully and let us know if they'll meet your needs.

0 Namitha K M over 5 years ago in reply to Collin Wells

Prodigy 200 points

Thanks for the reply. For differential pressure sensor interface any suggestions on ADC, i.e., to read both positive and negative signals. Remaining requirements like internal PGA and SPI interface.

0 Collin Wells over 5 years ago in reply to Namitha K M

TI__Guru 64315 points

The devices listed above will work for differential signals.

Make sure you bias the bridge such that the input common-mode and input range requirements are met for the devices.

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ADC requirement for my application