Voltage & Current (Power) Measurement AFE for mV Output Sensor Interface to SAR ADC Reference Design
TIDA-00493
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.

Description & Features

Technical Documents

Support & Training

Order Now


See the Important Notice and Disclaimer covering reference designs and other TI resources.

Key Document

Description

The TIDA-00493 TI design is a fixed gain amplifier stage for measuring low amplitude voltage and current inputs accurately over a wide dynamic range using SAR ADC for power measurement applications. Low-amplitude AC voltage from voltage dividers, current transformers or split core current sensors with a 333-mV output can be accurately measured.

Features
  • Op-Amp Based Fixed Gain Amplifier Stage for Voltage and Current Inputs With Output Compatible to ADS8688 Input Range of ±2.56, ±5.12, and ±10.24 V.
  • Configurations Provided:
    • Voltage Input With Resistor Divider > 1-MΩ Impedance (No External PT Required)
    • 333-mV AC Voltage Output Type Current Sensor Interface
    • CT Secondary Input With Burden Resistor: Single-Ended & Differential
  • Onboard Programmable Reference Provided for Single-Ended Measurement Applications.

See the Important Notice and Disclaimer covering reference designs and other TI resources.


  



Schematic/Block Diagram

Quickly understand overall system functionality.

Download Schematic

Design Guide

Get results faster with test and simulation data that's been verified.

Download Design Guide

Design Files

Download ready-to-use system files to speed your design process. Get Viewer.

Download Design Files


TI Devices (3)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
ADS8688  16-Bit 500kSPS 8-Channel Single-Supply SAR ADC With Bipolar Input Ranges  Analog-to-digital converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
OPA4180  0.1 uV/C Drift, Quad, Low Noise, Rail-to-Rail, 36V Zero Drift Op Amp  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
TPS65131  Split-Rail Converter with Dual, Positive and Negative Outputs (750mA typ)  Power management  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
ADS8688 Download
OPA4180 Download
Download
TPS65131 Download Download

Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.

Step 1: Download and install the free download.

Step 2: Download the Symbol and Footprint from the CAD.bxl file table.


Technical Documents

See the Important Notice and Disclaimer covering reference designs and other TI resources.

User guides (1)
Title Type Size (KB) Date
PDF 3948 19 Jun 2015
Selection guides (1)
Title Type Size (KB) Date
PDF 9699 22 Mar 2017
Design files (6)
Title Type Size (KB) Date
ZIP 704 25 Jun 2015
ZIP 1863 25 Jun 2015
PDF 199 25 Jun 2015
PDF 92 25 Jun 2015
PDF 230 25 Jun 2015
PDF 1273 25 Jun 2015

Support & training

Search our extensive online knowledge base where millions of technical questions and answers are available 24/7.

Search answers from TI experts

Content is provided 'AS IS' by the respective TI and Community contributors and does not constitute TI specifications.
See terms of use.

If you have questions about quality, packaging, or ordering TI products visit our Support page.

Technical articles