±1A Single-Supply Low-Side Current Sensing Solution Reference Design
TIPD175
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Key Document

Description

This single-supply low-side, bi-directional current sensing solution can accurately detect load currents from -1 A to 1 A. The linear range of the output is from 110 mV to 3.19 V. The design utilizes the OPA2313 configured as a difference amplifier and reference voltage buffer.

Features
  • ±1A Low-side Current Sensing Solution
  • Less than 1% total unadjusted error
  • Supply: 3.3V
  • Output: 110mV to 3.19V
  • This robust circuit reference design includes theory, complete error analysis, component selection, simulation, PCB design, and measured data that correlates with the theory and simulation

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Schematic/Block Diagram

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Test Data

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TI Devices (1)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
OPA2313  1-MHz, Micropower, Low-Noise, Rail-to-Rail I/O 1.8-V Operational Amplifier  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
OPA2313 Download
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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 723 08 Dec 2014
Design files (2)
Title Type Size (KB) Date
PDF 70 31 Jul 2015
PDF 103 31 Jul 2015
Related Tools & Software

Software (1)



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