Reference Design to Measure AC Voltage & Current in Protection Relays w/Delta-Sigma Chip Diagnostics

(ACTIVE) TIDA-00810

Description & Features

Technical Documents

Support & Training

Order Now


View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

Key Document

Description

The TIDA-00810 reference design accurately measures analog inputs performance and includes chip diagnostics to help identify power  systems failures early by using a highly accuracy AC voltage and current measurement analog front end (AFE) and a four-channel, 24-bit simultaneously-sampling differential input Delta-Sigma ADC for measurement over wide dynamic range. The ADC is configured to measure 0-5 V unipolar. The inputs are scaled to ADC measurement range using a fixed gain amplifier with 2.5 V DC output level shift. The AFE can be used to measure output of a current transformer, potential divider with analog isolation and Rogowski active integrator. The AFE uses 10-Bit low resolution successive approximation register (SAR) ADC in parallel with a 24 bit ∑-∆ ADC for ADS131A04 diagnostics.

Features
  • Data acquisition and diagnostics coverage provided using 24-bit ∑-∆ ADC and 10/12-bit SAR ADC
  • Output from the ∑-∆ ADC is validated by comparing it with SAR ADC – peak/RMS value is used for validation
  • ∑-∆ ADC reference output or external reference is monitored using a comparator
  • Current measurement accuracy is verified using current transformer and Rogowski coil with hardware integrator
  • Voltage measurement accuracy is verified using a potential divider (PD) without and with an isolation amplifier

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.


  



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 (11)

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
ADC104S021  4 Channel, 50 ksps to 200 ksps, 10-Bit A/D Converter  Analog-to-digital converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
ADS131A04  24-bit 128-kSPS 4-channel simultaneous-sampling delta-sigma ADC  Analog-to-digital converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
AMC1200  ±250mV-Input, Basic Isolated Amplifier for Current Sensing  Isolation  Sample & Buy View Design Kits & Evaluation Modules
CDCLVC1102  Low Jitter, 1:2 LVCMOS Fan-out Clock Buffer  Clock buffers  Sample & Buy View Design Kits & Evaluation Modules
LM4040-N  100-ppm/°C precision micropower shunt voltage reference  Voltage references  Sample & Buy View Design Kits & Evaluation Modules
LMV331  Single General Purpose Low-Voltage Comparator  Amplifiers  Sample & Buy Not Available
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
SN6501  Low-noise, 350-mA, 410-kHz transformer driver for isolated power supplies  Isolation  Sample & Buy View Design Kits & Evaluation Modules
TLV704  24V Input Voltage, 150mA, Ultra-Low-Iq Low-Dropout (LDO) Regulators  Power management  Sample & Buy View Design Kits & Evaluation Modules
TPS60403  60mA Charge Pump Voltage Inverter with Fixed 250kHz Operation  DC/DC switching regulators  Sample & Buy View Design Kits & Evaluation Modules
TPS717  150mA, High PSRR, Low Quiescent Current, Low Noise LDO  Power management  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
ADC104S021 Download Download
ADS131A04 Download Download
AMC1200 Download Download
Download
CDCLVC1102 Download Download
LM4040-N Download Download
Download Download
Download Download
LMV331 Download Download
Download Download
OPA4180 Download
Download
SN6501 Download Download
TLV704 Download Download
TPS60403 Download Download
TPS717 Download Download
Download Download
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

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date
PDF 2878 15 Nov 2016
Design files (6)
Title Abstract Type Size (KB) Date
ZIP 1195 07 Jul 2016
ZIP 2252 07 Jul 2016
PDF 6817 07 Jul 2016
ZIP 1403 07 Jul 2016
PDF 166 07 Jul 2016
PDF 2357 07 Jul 2016
Related Tools & Software

Software (1)



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.

Blogs