Design tool
Simulation for Low-Side, Bidirectional Current Sensing Circuit — SBOC500.ZIP (297KB)
Release date: 02-May-2018
CIRCUIT060007
Low-side, bidirectional current-sensing circuit
CIRCUIT060007
Overview
This single-supply low-side, bidirectional current sensing solution can accurately detect load currents from –1A to 1A. The linear range of the output is from 110mV to 3.19V. Low-side current sensing keeps the common-mode voltage near ground, and is thus most useful in applications with large bus voltages.
Features
- Single 5V supply with half-supply reference
- Input: -2.22mV to 2.27mV differential
- Output: 225mV - 4.72V
- Strain gauge resistance variation: 115 - 125 Ohms
- Gain: 1001V/V
Downloads
Supported products & hardware
General-purpose op amps
MSP430 microcontrollers
Technical documentation
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| Type | Title | Date | |
|---|---|---|---|
| * | Application note | Low-side bidirectional current sensing circuit with MSP430™ smart analog combo (Rev. A) | Mar. 06, 2020 |
| * | Application note | Low-side, bidirectional current-sensing circuit (Rev. B) | Feb. 01, 2019 |
| E-book | Simplifying Current Sensing (Rev. A) | Jan. 09, 2020 | |
| Application note | How to Use the Smart Analog Combo in MSP430™ MCUs (Rev. A) | Oct. 24, 2019 | |
| E-book | Analog Engineer’s Circuit Cookbook: Amplifiers (Rev. A) | Feb. 18, 2019 | |
| User guide | 0-A to 1-A Single-Supply Low-Side Current-Sensing Solution Design Guide (Rev. B) | Dec. 11, 2015 | |
| User guide | +/-1A Single-Supply Low-Side Current Sensing Solution Design Guide | Dec. 08, 2014 |
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