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TIDA-00648

4-20mA Current Loop Transmitter Reference Design

Design files

TIDA-00648

Design files

Overview

TIDA-00648 is an industry standard 4-20 mA current-loop transmitter. It allows injection of FSK-modulated digital data into the 4-20 mA current loop for HART communication. External protection circuitry is deployed in-place for compliance with regulatory IEC61000-4 standards such as EFT, ESD and surge requirements. EMC compliance to IEC61000-4 is necessary to ensure that the design not only survives but also performs as intended in the harsh/noisy industrial environment.

Features
  • 4- to 20-mA current-loop output signal
  • 16-bit resolution
  • Loop-error detection and reporting
  • Programmable output-current error levels
  • Simple HART modulator interfacing
  • Designed to meet IEC 61000 requirements
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

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

download Design guide — TIDA-00648
TIDUAM6.PDF (1159 K)

Reference design overview and verified performance test data

download Schematic — TIDA-00648
TIDRH13.PDF (553 K)

Detailed schematic diagram for design layout and components

download Bill of materials (BOM) — TIDA-00648
TIDRH14.PDF (113 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

download Assembly drawing — TIDA-00648
TIDRH15.PDF (205 K)

Detailed overview of design layout for component placement

download CAD/CAE symbol — TIDA-00648
TIDRH17.ZIP (865 K)

Files used for 3D models or 2D drawings of IC components

download Gerber file — TIDA-00648
TIDCAX6.ZIP (316 K)

Design file that contains information on physical board layer of design PCB

download PCB layout — TIDA-00648
TIDRH16.PDF (1423 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Precision DACs (≤10 MSPS)

DAC161S997 — 16-Bit Precision DAC With Internal Reference and 4mA-to-20mA Current Loop Drive

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

TPS7A16 — 100-mA, 60-V, ultra-low-IQ, low-dropout (LDO) voltage regulator with power good and enable

Data sheet: PDF | HTML
MSP430 microcontrollers

MSP430F5172 — 25 MHz MCU with 32KB Flash, 2KB SRAM, 10-bit ADC, comparator, DMA, 16-bit High Resolution timer

Data sheet: PDF | HTML

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Software

Technical documentation

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Type Title Date
* Design guide 4-mA to 20-mA Current Loop Transmitter Design Guide Sep. 17, 2015

Related design resources

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TIDA-00245 — Data Isolation for Loop Powered Applications Reference Design TIDA-00459 — Highly Efficient Power & Data Transmission for Isolated Low Power Applications Reference Design

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