Digitally Isolated 2-Channel, Wide DC Binary Input Module Reference Design
TIDA-00420
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.

Description & Features

Technical documentation

Support & Training

Order Now


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

Key Document

Description

This reference design enables translation of high DC voltage inputs upto 300VDC into binary logic level voltages that a typical electronic circuit can handle. This solution is very flexible, not only handling input voltages from 18 to 300VDC but also allowing programmable switching thresholds to set binary levels. In addition, this solution enables < ± 3.0% (± 1V measured value step size) error in voltage detection coupled with reliable isolation > 2kV RMS.

Features
  • High accuracy voltage measurement capability (< ±3% error)
  • Flexible solution handling input voltages from 18V to 300VDC
  • MCU enables programmable switching thresholds
  • Excellent long term reliability with digital isolation included
  • Provides option for wetting current control
  • Output can be either I2C or digital output

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


  



Schematic/Block Diagram

Quickly understand overall system functionality.

Download Schematic

Test Data

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

Download Test Data

Design Files

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

Download Design Files


TI Devices (15)

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
ADS7128  Small 8-ch 12-bit analog-to-digital converter (ADC) with I2C interface, GPIOs, CRC and RMS module  Analog-to-digital converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
ADS7953  12-Bit, 1-MSPS, 16-Channel, Single-Ended, microPower SAR ADC with Serial I/F  Analog-to-digital converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
ADS7957  10 bit, 1 MSPS, 16 Ch, Single Ended, Micro Power, sr i/f, SAR ADC  Analog-to-digital converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
ISO1640  Robust-EMC bidirectional I2C digital isolator  Isolated interface ICs  Sample & Buy View Design Kits & Evaluation Modules
ISO6741  General-purpose, quad-channel, 3/1 digital isolator  Isolation  Sample & Buy View Design Kits & Evaluation Modules
ISO7710  Robust EMC, single-channel, reinforced digital isolator  Isolation  Sample & Buy View Design Kits & Evaluation Modules
LMZM23601  36-V, 1-A Step-Down DC-DC Power Module in 3.8-mm × 3-mm Package  Step-down (buck) regulators  Sample & Buy View Design Kits & Evaluation Modules
REF3425  2.5-V, low-drift, low-power, small-footprint series voltage reference  Voltage references  Sample & Buy View Design Kits & Evaluation Modules
REF5025  2.5-V, 3-µVpp/V noise, 3-ppm/°C drift precision series voltage reference  Voltage references  Sample & Buy View Design Kits & Evaluation Modules
TLV6001  1-Channel, 1-MHz, low power op amp for cost-sensitive systems  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
TLV6002  2-Channel, 1-MHz, low power op amp for cost-sensitive systems  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
TLV704  150-mA, 24-V, ultra-low-IQ, low-dropout voltage regulator  Power management  Sample & Buy View Design Kits & Evaluation Modules
TPS25921A  4.5-V to 18-V, 90mΩ, 0.4-1.6A eFuse with auto retry fault response  Power switches  Sample & Buy View Design Kits & Evaluation Modules
UCC12040  500 mW, high efficiency 3 kVrms isolated DC-DC converter  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules
UCC12050  500-mW, high-efficiency, 5-kVRMS isolated DC/DC converter  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
ADS7128 Download
ADS7953 Download Download
Download Download
ADS7957 Download Download
Download Download
ISO1640 Download
ISO6741 Download
ISO7710 Download Download
Download Download
LMZM23601 Download Download
REF3425 Download Download
REF5025 Download Download
Download Download
TLV6001 Download
Download
TLV6002 Download
Download
TLV704 Download Download
TPS25921A Download Download
UCC12040 Download
UCC12050 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 documentation

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

User guide (1)
Title Type Size (KB) Date
PDF 915 01 Mar 2021
Design files (7)
Title Type Size (KB) Date
ZIP 987 14 Sep 2016
ZIP 234 14 Sep 2016
ZIP 254 14 Sep 2016
ZIP 102 14 Sep 2016
ZIP 1717 14 Sep 2016
ZIP 728 14 Sep 2016
ZIP 522 14 Sep 2016

Support & training

TI E2E™ forums with technical support from TI engineers

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