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Analog current-sense amplifiers

INA282

ACTIVE

-14 to 80V, bi-directional current sense amplifier

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Data sheet

INA282

ACTIVE
Data sheet Order now

Product details

Product type Analog output Common-mode voltage (max) (V) 80 Common-mode voltage (min) (V) -14 Input offset (±) (max) (µV) 70 Input offset drift (±) (typ) (µV/°C) 0.3 Voltage gain (V/V) 50 CMRR (min) (dB) 120 Bandwidth (kHz) 10 Supply voltage (max) (V) 18 Supply voltage (min) (V) 2.7 Iq (max) (mA) 0.9 Number of channels 1 Comparators (#) 0 Gain error (%) 1.4 Gain error drift (±) (max) (ppm/°C) 50 Slew rate (V/µs) 0.2 Features Bi-directional, Low-side Capable Rating Catalog Operating temperature range (°C) -40 to 125
Product type Analog output Common-mode voltage (max) (V) 80 Common-mode voltage (min) (V) -14 Input offset (±) (max) (µV) 70 Input offset drift (±) (typ) (µV/°C) 0.3 Voltage gain (V/V) 50 CMRR (min) (dB) 120 Bandwidth (kHz) 10 Supply voltage (max) (V) 18 Supply voltage (min) (V) 2.7 Iq (max) (mA) 0.9 Number of channels 1 Comparators (#) 0 Gain error (%) 1.4 Gain error drift (±) (max) (ppm/°C) 50 Slew rate (V/µs) 0.2 Features Bi-directional, Low-side Capable Rating Catalog Operating temperature range (°C) -40 to 125
SOIC (D) 8 29.4 mm² 4.9 x 6 VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • Wide Common-Mode Range: –14 V to +80 V
  • Offset Voltage: ±20 µV
  • CMRR: 140 dB
  • Accuracy:
    • ±1.4% Gain Error (Max)
    • 0.3 µV/°C Offset Drift
    • 0.005%/°C Gain Drift (Max)
  • Available Gains:
    • 50 V/V: INA282
    • 100 V/V: INA286
    • 200 V/V: INA283
    • 500 V/V: INA284
    • 1000 V/V: INA285
  • Quiescent Current: 900 µA (Max)
  • Wide Common-Mode Range: –14 V to +80 V
  • Offset Voltage: ±20 µV
  • CMRR: 140 dB
  • Accuracy:
    • ±1.4% Gain Error (Max)
    • 0.3 µV/°C Offset Drift
    • 0.005%/°C Gain Drift (Max)
  • Available Gains:
    • 50 V/V: INA282
    • 100 V/V: INA286
    • 200 V/V: INA283
    • 500 V/V: INA284
    • 1000 V/V: INA285
  • Quiescent Current: 900 µA (Max)

The INA28x family includes the INA282, INA283, INA284, INA285, and INA286 devices. These devices are voltage output current shunt monitors that can sense drops across shunts at common-mode voltages from –14 V to +80 V, independent of the supply voltage. The low offset of the zero-drift architecture enables current sensing with maximum drops across the shunt as low as 10 mV full-scale.

These current sense amplifiers operate from a single +2.7-V to +18-V supply, drawing a maximum of 900 µA of supply current. These devices are specified over the extended operating temperature range of –40°C to +125°C, and offered in SOIC-8 and VSSOP-8 packages.

The INA28x family includes the INA282, INA283, INA284, INA285, and INA286 devices. These devices are voltage output current shunt monitors that can sense drops across shunts at common-mode voltages from –14 V to +80 V, independent of the supply voltage. The low offset of the zero-drift architecture enables current sensing with maximum drops across the shunt as low as 10 mV full-scale.

These current sense amplifiers operate from a single +2.7-V to +18-V supply, drawing a maximum of 900 µA of supply current. These devices are specified over the extended operating temperature range of –40°C to +125°C, and offered in SOIC-8 and VSSOP-8 packages.
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Technical documentation

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Type Title Date
* Data sheet INA28x High-Accuracy, Wide Common-Mode Range, Bidirectional Current Shunt Monitors, Zero-Drift Series datasheet (Rev. C) PDF | HTML 12 May 2015
Application note Current Mode Control in Switching Power Supplies (Rev. E) PDF | HTML 12 Apr 2023
Application note Low-Drift, Precision, In-Line Motor Current Measurements With PWM Rejection (Rev. D) PDF | HTML 07 Apr 2023
Application note Using a PCB Copper Trace as a Current-Sense Shunt Resistor PDF | HTML 25 Jan 2022
Selection guide Current Sense Amplifiers (Rev. E) 20 Sep 2021
E-book Simplifying Current Sensing (Rev. A) 09 Jan 2020
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Application note Hybrid Battery Charger with Load Control for Telecom Equipments (Rev. A) 09 May 2018
Application note Closed-Loop Analysis of Load-Induced Amplifier Stability Issues Using Zout 27 Oct 2017
Application note Benefits of Intergated Low Inductive Shunt for PWM Applications 17 Jun 2017
Application note Precision LED Brightness and Color Mixing With Discrete Current Sense Amplifiers 28 Feb 2017
Technical article How to get started with current sense amplifiers – part 4 16 Jul 2015
Technical article How to get started with current sense amplifiers – part 3 09 Jul 2015
Technical article How to get started with current sense amplifiers – part 2 26 May 2015
Technical article How to get started with current sense amplifiers – part 1 19 May 2015
Design guide EMC Compliant High-Side Current Sensing With Overvoltage Protection Design Guide 13 Feb 2014
EVM User's guide INA282-286EVM User's Guide 23 Sep 2010

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

INA282-286EVM — INA282-286 Evaluation Module

The INA282-286EVM is intended to provide basic functional evaluation of this device family. The fixture layout is not intended to be a model for the target circuit, nor is it laid out for electromagnetic compatibility (EMC) testing. The INA282-286EVM allows the user to install a shunt resistor, (...)

User guide: PDF
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Simulation model

INA282 PSpice Model (Rev. B)

SBOM447B.ZIP (1227 KB) - PSpice Model
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Simulation model

INA282 TINA-TI Reference Design

SBOM449.TSC (144 KB) - TINA-TI Reference Design
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Simulation model

INA282 TINA-TI Spice Model

SBOM448.TSM (26 KB) - TINA-TI Spice Model
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Calculation tool

CS-AMPLIFIER-ERROR-TOOL — Current sense amplifier comparison and error tool

This Excel calculator provides a comparison between two and five of our standard current sense amplifiers, delivering a chart containing the basic parameters of each device. This calculator also takes system condition inputs from users such as common-mode voltage, supply voltage, shunt resistor (...)
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Design tool

CIRCUIT060035 — Bidirectional current sensing with a window comparator circuit

This bidirectional current sensing solution uses a current-sense amplifier and a high-speed dual comparator with a rail-to-rail input common mode range to create over-current (OC) alert signals at the comparator outputs (OUTA and OUTB) if the input current (IG1) rises above 100 A or falls below (...)
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Design tool

CIRCUIT060037 — Precision over-current latch circuit

This high-side, current sensing solution uses a current sense amplifier, a comparator with an integrated reference and a P-channel MOSFET to create an over-current latch circuit. When a load current greater than 200 mA is detected, the circuit disconnects the system from its power source. The (...)
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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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Simulation tool

TINA-TI — SPICE-based analog simulation program

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
User guide: PDF
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Reference designs

TIDA-00302 — Current Shunt Monitor with Transient Robustness Reference Design

This high-side current shunt monitor is used to measure the voltage developed across a current-sensing resistor when current passes through it.

Additionally, an external protection circuit is implemented to provide surge and fast-transient protection and demonstrate the different immunity levels to (...)

Design guide: PDF
Schematic: PDF
Reference designs

TIDA-00126 — EMC Compliant High Side Current Sensing Reference Design with Overvoltage Protection

This reference design focuses on high-side current measurement using a family of TI's voltage output current shunt monitors. It can be used for measuring high-side current in industrial applications, where the common-mode dynamics can drop below ground. Overall the design helps designers build (...)
Design guide: PDF
Schematic: PDF
Package Pins Download
SOIC (D) 8 View options
VSSOP (DGK) 8 View options
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