TI Home >   Semiconductors >   Design resources >   Reference designs >   3-Terminal PLC Reference Design

3-Terminal PLC Reference Design
TIPD195
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 design inputs ±10V or ±20mA and outputs 2.5V±2.3V. It utilizes the INA188, which is a zero-drift instrumentation amplifier. The 2.5V reference voltage is provided by the REF3225. Measured performance yielded just 0.153% error (typical).

Features
  •  3-Terminal PLC Reference Design
  •  Input: ±10 V or ±20 mA
  •  Output: 2.5 V ± 2.3 V
  •  Supplies: ±15V, 5 V
  •  This design yielded less than 0.2% total unadjusted error
  •  This robust circuit reference design includes theory, error analysis, component selection, simulation, PCB design, and measured data that correlates with the simulation

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


TI Devices (2)

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
INA188  36-V, Zero-Drift, Rail-to-Rail-Out Instrumentation Amplifier  Amplifiers  Sample & Buy View Design Kits & Evaluation Modules
REF3225  2.5-V 4-ppm/°C, 100-µA 6-pin SOT-23 series (bandgap) voltage reference  Voltage references  Sample & Buy Not Available

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
INA188 Download Download
REF3225 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 880 20 May 2015
Design files (3)
Title Type Size (KB) Date
PDF 207 29 Sep 2015
PDF 167 29 Sep 2015
ZIP 964 29 Sep 2015

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