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INA260

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36V, 16-bit, precision i2c output current/voltage/power monitor w/ int. shunt resistor

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36V, 16-bit, precision i2c output current/voltage/power monitor w/ int. shunt resistor

INA260

ACTIVE
Data sheet Order now

Product details

Parameters

Common mode voltage (Max) (V) 36 Common mode voltage (Min) (V) 0 Input offset (+/-) (Max) (uV) 5mA Input offset drift (+/-) (Typ) (uV/C) 1 Gain (V/V) 1 Gain error (%) 0.15 Gain error drift (+/-) (Max) (ppm/°C) 35 CMRR (Min) (dB) 126 Bandwidth (kHz) 3.5 Supply voltage (Max) (V) 5.5 Supply voltage (Min) (V) 2.7 Iq (Max) (mA) 0.42 Digital interface I2C, SMBus Features Alert Function, Bi-directional, Integrated Shunt, Low-side Capable Resolution (Bits) 16 Rating Catalog Operating temperature range (C) -40 to 125 open-in-new Find other Current/voltage/power monitors

Package | Pins | Size

TSSOP (PW) 16 22 mm² 5 x 4.4 open-in-new Find other Current/voltage/power monitors

Features

  • Precision Integrated Shunt Resistor:
    • Current Sense Resistance: 2 mΩ
    • Tolerance Equivalent to 0.1%
    • 15-A Continuous From –40°C to +85°C
    • 10 ppm/°C Temperature Coefficient (0°C to +125°C )
  • Senses Bus Voltages From 0 V to 36 V
  • High-Side or Low-Side Sensing
  • Reports Current, Voltage, and Power
  • High Accuracy:
    • 0.15% System Gain Error (Maximum)
    • 5-mA Offset (Maximum)
  • Configurable Averaging Options
  • 16 Programmable Addresses
  • Operates From a 2.7-V to 5.5-V Power Supply
  • 16-Pin, TSSOP Package
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Description

The INA260 is a digital-output, current, power, and voltage monitor with an I2C and SMBus™-compatible interface with an integrated precision shunt resistor. It enables high-accuracy current and power measurements and over-current detection at common-mode voltages that can vary from 0 V to 36 V, independent of the supply voltage. The device is a bidirectional, low- or high-side, current-shunt monitor that measures current flowing through the internal current-sensing resistor. The integration of the precision current-sensing resistor provides calibration-equivalent measurement accuracy with ultra-low temperature drift performance and ensures that an optimized Kelvin layout for the sensing resistor is always obtained.

The INA260 features up to 16 programmable addresses on the I2C-compatible interface. The digital interface allows programmable alert thresholds, analog-to-digital converter (ADC) conversion times, and averaging. To facilitate ease of use, an internal multiplier enables direct readouts of current in amperes and power in watts.

The device operates from a single 2.7-V to 5.5-V supply, drawing 310 µA (typical) of supply current. The INA260 is specified over the operating temperature range between –40°C and +125°C and is available in the 16-pin TSSOP package.

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Technical documentation

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Type Title Date
* Datasheet INA260 Precision Digital Current and Power Monitor With Low-Drift, Precision Integrated Shunt datasheet (Rev. C) Dec. 13, 2016
More literature Simplifying Current Sensing (Rev. A) Jan. 09, 2020
Application notes Precision, Low-Side Current Measurement (Rev. B) Mar. 06, 2019
Technical articles A key to accurate system thermal management: monitoring both current flow and temperature Oct. 04, 2018
Application notes Integrating a Current Sense Resistor With a Current Sense Amplifier (Rev. B) Jul. 20, 2018
Selection guides Current Sense Amplifiers (Rev. D) Apr. 04, 2018
Application notes Digital Interfaces for Current Sensing Devices Jun. 30, 2017
Application notes Integrated-Resistor Current Sensors Simplify PCB Design Jun. 30, 2017
Technical articles System trade-offs for high- and low-side current measurements Jun. 01, 2017
Application notes Integrated, Current Sensing Analog-to-Digital Converter Dec. 21, 2016
Application notes Integrating The Current Sensing Signal Path (Rev. A) Dec. 02, 2016
User guides INA260EVM-PDK User's Guide Nov. 10, 2016
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 2 May 26, 2015

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
$75.00
Description
The INA260EVM is a compact, easy-to-use platform for evaluating the main features and performance of the INA260 High Precision Current Shunt Monitor across its specified input current, common-mode voltage and temperature ranges. Instrumentation needs for performance evaluation are minimal. EVM power (...)
Features
  • Small form factor
  • USB-powered
  • Supports full ±15A input current range and 36V common-mode voltage range
  • Optional input common-mode over-voltage protection clamps
  • Digital host controller and GUI included
View details
GUIS FOR EVALUATION MODULES (EVM) Download
SBOC478.ZIP (6020 KB)

Design tools & simulation

SIMULATION MODELS Download
SBOMA95.ZIP (34 KB) - IBIS Model
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
Isolated Current Sense with Integrated Shunt Resistor and I2C Interface Reference Design
TIDA-01608 — This verified design can accurately measure current on a bus that carries hundreds of volts. This design is targeted for solar and server applications due to their wide high-voltage input range requirements. This design uses the INA260 current shunt monitor with integrated shunt resistor for current (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Reference Design for 1200V Isolated I2C High Side Current Sensing for Solar Combiner Boxes
TIDA-01590 — This reference design is an isolated high-side current sensing design for a smart combiner box in a grounded or ungrounded system. The current sensing topology enables multichannel, sub ±1% error, isolated current sensing for high-voltage systems up to 1200-VDC, limited by the DC/DC transformer.
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
TSSOP (PW) 16 View options

Ordering & quality

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Training series

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Videos

Getting Started with Current Sense Amplifiers, Session 16: Benefits of Integrated Precision Shunt Resistor

Discusses how to integrating a precision shunt resistor will enhance the system implementation

Posted: 15-Jan-2016
Duration: 04:18

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