Q&A LTC2497 - Protection and Low Voltage Conversion Divider Logic for Differential Input & ADC Conversion Logic

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Deva e2-s on Jul 31, 2020

Hi ADI Team,
We are using LT2497 in a SCADA Application to read the Analog Voltage from Different Field. Please Guide us on

How to Protect the Analog Signal from Field ?
How to Low Convert the Higher Voltage Differential Analog Input Range(0-20V) to 0-5V using Resistor Divider (Regarding Reference) ?
How will be the ADC Conversion will work?

Looking Forward for Your Support.

Updated the Voltage range
[edited by: Deva e2-s at 5:55 AM (GMT 0) on 3 Aug 2020]

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ghoover
Aug 3, 2020 +1 verified
To convert a 0-20V signal to 0-5V range that can be safely read by the ADC, I would recommend using a fully differential amplifier like the LTC6363. There is an circuit shown on page 36 of the LTC6363 data…

+1 ghoover

on Aug 3, 2020 2:31 PM 6 months ago
To convert a 0-20V signal to 0-5V range that can be safely read by the ADC, I would recommend using a fully differential amplifier like the LTC6363. There is an circuit shown on page 36 of the LTC6363 data sheet that could be modified to suit your application.
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