Low-Drift Bidirectional Single-Supply Low-Side Current Sensing Reference Design

(ACTIVE) TIPD156

Description & Features

Technical Documents

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Key Document

Description

This Verified TI Precision Design implements a low-drift, bi-directional, low-side, single-supply current sensing solution that measures load currents from -2.5 A to +2.5 A.  The output range is from 250 mV to 2.75 V, with 0 A current centered at 1.5 V.  To achieve low-drift performance, the solution utilizes the INA213B and REF2030.  The design’s functionality and performance were verified by fabricating a PCB and measuring results over temperature from -40 °C to 125 °C.

Features
  • Low-side current sensing
  • Measured load current: +/-2.5 A
  • 250mV to 2.75V output
  • 0 A centered at 1.5 V
  • ±0.0522% Full-scale range error (-40 °C to 125 °C)
  • Low-drift, Single-supply

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


  



Schematic/Block Diagram

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Test Data

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Design Files

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TI Devices (9)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
INA213  26V, Bi-Directional, Zero-Drift, Low-/High-Side, Voltage Output Current Sense Amplifier  Current sense amplifiers  Sample & Buy View Design Kits & Evaluation Modules
REF1925  Dual Output Vref and Vref/2 Voltage Reference  Voltage references  Sample & Buy Not Available
REF1930  Dual Output Vref and Vref/2 Voltage Reference  Voltage references  Sample & Buy Not Available
REF1933  Dual Output Vref and Vref/2 Voltage Reference  Voltage references  Sample & Buy View Design Kits & Evaluation Modules
REF1941  Dual Output Vref and Vref/2 Voltage Reference  Voltage references  Sample & Buy Not Available
REF2025  8ppm/°C Drift, Low-Power, Dual-Output Vref and Vref/2 Voltage Reference  Voltage references  Sample & Buy Not Available
REF2030  Low-Drift, Low-Power, Dual-Output Vref and Vref/2 Voltage Reference  Voltage references  Sample & Buy Not Available
REF2033  Low-Drift, Low-Power, Dual-Output Vref and Vref/2 Voltage Reference  Voltage references  Sample & Buy View Design Kits & Evaluation Modules
REF2041  Low-Drift, Low-Power, Dual-Output Vref and Vref/2 Voltage Reference  Voltage references  Sample & Buy Not Available

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
INA213 Download Download
Download Download
REF1933 Download -
REF2025 Download -
REF2030 Download -
REF2033 Download -
REF2041 Download -

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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 842 16 Jun 2014
Design files (3)
Title Abstract Type Size (KB) Date
ZIP 282 05 Jun 2014
PDF 110 05 Jun 2014
PDF 92 05 Jun 2014
Related Tools & Software

Software (3)



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