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INA282

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

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

INA282

ACTIVE
Data sheet Order now

Product details

Parameters

Common mode voltage (Max) (V) 80 Common mode voltage (Min) (V) -14 Input offset (+/-) (Max) (uV) 70 Input offset drift (+/-) (Typ) (uV/C) 0.3 Gain (V/V) 50 Gain error (%) 1.4 Gain error drift (+/-) (Max) (ppm/°C) 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 Features Bi-directional, Low-side Capable Rating Catalog Operating temperature range (C) -40 to 125 open-in-new Find other Current sense amplifiers analog output

Package | Pins | Size

SOIC (D) 8 19 mm² 4.9 x 3.9 VSSOP (DGK) 8 15 mm² 3 x 4.9 open-in-new Find other Current sense amplifiers analog output

Features

  • 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)
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Description

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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Same functionality but is not pin-for-pin or parametrically equivalent to the compared device:
INA240 ACTIVE -4 to 80V, bidirectional, ultra-precise current sense amplifier with enhanced PWM rejection This product offers better Vos, gain error, and temperature drift parameters

Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet INA28x High-Accuracy, Wide Common-Mode Range, Bidirectional Current Shunt Monitors, Zero-Drift Series datasheet (Rev. C) May 12, 2015
White papers Simplifying Current Sensing (Rev. A) Jan. 09, 2020
Technical articles A key to accurate system thermal management: monitoring both current flow and temperature Oct. 04, 2018
Application notes Power-Saving Topologies for TI Current Shunt Monitors (Rev. A) Aug. 01, 2018
Application notes Current Mode Control in Switching Power Supplies (Rev. A) Jul. 20, 2018
Application notes Low-Drift, Precision, In-Line Motor Current Measurements With PWM Rejection (Rev. B) Jul. 20, 2018
Selection guides Power Management Guide 2018 (Rev. R) Jun. 25, 2018
Application notes Hybrid Battery Charger with Load Control for Telecom Equipments (Rev. A) May 09, 2018
Selection guides Current Sense Amplifiers (Rev. D) Apr. 04, 2018
Application notes Closed-Loop Analysis of Load-Induced Amplifier Stability Issues Using Zout Oct. 27, 2017
Application notes Benefits of Intergated Low Inductive Shunt for PWM Applications Jun. 17, 2017
Technical articles System trade-offs for high- and low-side current measurements Jun. 01, 2017
Application notes Current Sensing in a Programmable Logic Controller (PLC) May 03, 2017
Application notes Precision LED Brightness and Color Mixing With Discrete Current Sense Amplifiers Feb. 28, 2017
Technical articles Why should you care about overcurrent protection in your system? Jun. 16, 2016
Technical articles How to get started with current sense amplifiers – part 4 Jul. 16, 2015
User guides EMC Compliant High-Side Current Sensing With Overvoltage Protection Design Guide Feb. 13, 2014
User guides INA282-286EVM User's Guide Sep. 23, 2010

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
49
Description

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, and (...)

Features
  • Easy handling of the small MSOP package
  • Easy access to all device pins
  • Space for optional input filtering capacitors and resistors as well as a prototype area for additional user defined circuitry
  • Space for shunt resistors of various footprints
  • Evaluation of all gain options through provided device (...)
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Design tools & simulation

SIMULATION MODELS Download
SBOM447A.ZIP (166 KB) - PSpice Model
SIMULATION MODELS Download
SBOM448.TSM (26 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SBOM449.TSC (144 KB) - TINA-TI Reference Design
SIMULATION TOOLS Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
View details
SIMULATION TOOLS Download
SPICE-based analog simulation program
TINA-TI — 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 (...)
document-generic User guide

Reference designs

REFERENCE DESIGNS Download
Current Shunt Monitor with Transient Robustness Reference Design
TIDA-00302 — 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 (...)
document-generic Schematic document-generic User guide
Design files
View details
REFERENCE DESIGNS Download
EMC Compliant High Side Current Sensing Reference Design with Overvoltage Protection
TIDA-00126 — 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 (...)
document-generic Schematic document-generic User guide
Design files
View details

CAD/CAE symbols

Package Pins Download
SOIC (D) 8 View options
VSSOP (DGK) 8 View options

Ordering & quality

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