AC analog input module

Products and reference designs

AC analog input module

Block diagram

Overview

Our integrated circuits and reference designs help you create new AC analog input module designs that provide reliable and repeatable fault detection and trip-time performance in protection relays. Whether you are looking for sensors to accurately measure voltage and current or need the right transformers, shunts, Rogowski coils and potential dividers, the following subsystems will help you design an input module to help protect your grid assets.

Design requirements:

AC analog input module designs often require:

  • Isolated, multi-channel voltage and current measurement.
  • Accurate and fast conversion of voltage and current signals.
  • Low power and reliable connectivity with sensors.

Block diagram

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Technical documentation

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Type Title Date
Technical articles Ditch the NTC thermistor: use an analog temp sensor instead 31 May 2013
Application note Digital Filter Types in Delta-Sigma ADCs PDF | HTML 29 Jun 2018
Application note Principles of Data Acquisition and Conversion (Rev. A) PDF | HTML 28 Jun 2018
Application note Reduce Effects of Ext RC Filter on Gain Error and Drift in SAR ADC w/Int AFE (Rev. A) 25 Jul 2017
Technical articles How to spin your stepper motor more efficiently – Part 2 22 May 2015
White paper Enabling and integrating wired & wireless technologies for grid interoperability 22 Mar 2019
Technical articles Don’t miss out: New product demos featured at SPS IPC Drives 2015 18 Dec 2015
White paper Moving from conventional to intelligent substations 17 Jan 2019
Application note HSR/PRP Solutions on Sitara Processors for Grid Substation Communication 17 Apr 2018
Application note A Glossary of Analog-to-Digital Specifications and Performance Characteristics (Rev. B) 13 Sep 2019
Application note TI DSP Benchmarking 13 Jan 2016
Application note Low-Emission Designs With ISOW7841 Integrated Signal and Power Isolator (Rev. C) 11 May 2022
Application note Reducing Phase Delay by Averaging on ADS8686S with Burst Sequencer Mode PDF | HTML 10 May 2022
Application note Expanding Analog Input Channels in Grid Applications (Using 16-Channel, 16-Bit, (Rev. A) 10 May 2022
Application note Electric Power System Coherent Sampling 08 Dec 2012
Technical articles A user interface that says "hello" 05 Nov 2014
Application note Multichannel Analog Input Modules for PLC Equipment 05 Jan 2019

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