Automotive, mA-to-kA Range, Current Shunt Sensor Reference Design
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


This reference design shows how to detect current from the mA-to-KA range using a busbar-type shunt resistor. The increasing demand of high-capacity batteries in electric vehicles (EVs) and hybrid electric vehicles (HEVs) drives the requirement for larger current spans and highly-accurate current sensors. Obtaining a good accuracy over three decades (mA to A, 1 A to 100 A, and 100 A to 1000 A) is quite challenging due to large amounts of noise in the system. This design solves this problem by using a high-resolution analog-to-digital converter (ADC) and high-accuracy current shunt monitors from TI.

  • Full-scale accuracy of:
    • 0.02% full-scale range (FSR) for < 20A and < 0.05% FSR for 20A to 1500A at 25°C
    • 0.1% FSR for < 20A and 0.25% FSR for 20A to 1500A at 50°C
  • Suitable for 50mA to 1500A range current measurement; configurable to varied current spans
  • High-side sensing and low-side sensing
  • Supports bi-directional current
  • Bi-directional current measurement:  -1500A to +1500A

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 (6)

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
ADS1259-Q1  Automotive, 24-bit, 14.4kSPS, 1-ch delta-sigma ADC w/ low-drift Vref for high-dynamic range systems  Analog-to-digital converters (ADCs)  Sample & Buy Not Available
INA240-Q1  AEC-Q100, -4 to 80V, bi-directional, ultra-precise current sense amplifier w/ enhanced pwm rejection  Current sense amplifiers  Sample & Buy View Design Kits & Evaluation Modules
LMT01-Q1  Automotive Grade, 0.5°C Accurate 2-pin Temperature Sensor with a Pulse Train Interface  Temperature sensors  Sample & Buy Not Available
MSP430F5529  25 MHz MCU with 128KB Flash, 8KB SRAM, 12-bit ADC, Comparator, DMA, UART/SPI/I2C, USB, HW Multiplier  Microcontrollers (MCUs)  Sample & Buy View Design Kits & Evaluation Modules
OPA320-Q1  Automotive Qualified, Precision, Zero-Crossover, 20MHz, 0.9pA Ib, RRIO, CMOS Operational Amplifier   Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
TPS709-Q1  Automotive 150-mA, 30-V, ultra-low-IQ, low-dropout voltage regulator with reverse current protection  Power management  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
ADS1259-Q1 Download Download
INA240-Q1 Download
Download Download
LMT01-Q1 Download Download
Download Download
MSP430F5529 Download Download
OPA320-Q1 Download Download
TPS709-Q1 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 documentation

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

User guide (1)
Title Type Size (KB) Date
PDF 1201 18 Dec 2017
Design files (6)
Title Type Size (KB) Date
ZIP 419 26 Sep 2017
ZIP 476 26 Sep 2017
PDF 511 26 Sep 2017
PDF 103 26 Sep 2017
PDF 53 26 Sep 2017
PDF 302 26 Sep 2017
Related Tools & Software

Hardware development (1)

Name Part Number Tool Type
MSP430F5529 USB LaunchPad development kit  MSP-EXP430F5529LP  Development kit 

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