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Digital power monitors with integrated shunt resistor

INA260

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

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Data sheet

INA260

ACTIVE
Data sheet Order now

Product details

Common-mode voltage (max) (V) 36 Common-mode voltage (min) (V) 0 Input offset current drift (±) (typ) (µA/°C) 1 Gain error (%) 0.1 Iq (max) (mA) 0.42 Digital interface I2C, SMBus Resolution (Bits) 16 Features Alert Function, Bidirectional, Integrated Power Monitor, Integrated Shunt, Low-side Capable, Ultra precise Rating Catalog Operating temperature range (°C) -40 to 125
Common-mode voltage (max) (V) 36 Common-mode voltage (min) (V) 0 Input offset current drift (±) (typ) (µA/°C) 1 Gain error (%) 0.1 Iq (max) (mA) 0.42 Digital interface I2C, SMBus Resolution (Bits) 16 Features Alert Function, Bidirectional, Integrated Power Monitor, Integrated Shunt, Low-side Capable, Ultra precise Rating Catalog Operating temperature range (°C) -40 to 125
TSSOP (PW) 16 32 mm² (5 mm × 6.4 mm)
  • 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
  • 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

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.

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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Top documentation Type Title Format options Date
* Data sheet INA260 Precision Digital Current and Power Monitor With Low-Drift, Precision Integrated Shunt datasheet (Rev. C) PDF | HTML Dec 13, 2016
Application note Risks and Prevention of ESD, EOS, and Latch Up Events for Current Sense Amplifiers PDF | HTML Nov 18, 2024
Application brief Integrating the Current Sensing Resistor (Rev. D) PDF | HTML Apr 7, 2023
E-book An Engineer's Guide to Current Sensing (Rev. B) Apr 12, 2022
Application note Digital Interfaces for Current Sensing Devices (Rev. A) PDF | HTML Sep 30, 2021
Application brief Integrating the Current Sensing Signal Path (Rev. B) PDF | HTML Sep 29, 2021
Application brief Integrated, Current Sensing Analog-to-Digital Converter (Rev. A) PDF | HTML Sep 28, 2021
Selection guide Current Sense Amplifiers (Rev. E) Sep 20, 2021
Application note Getting Started with Digital Power Monitors (Rev. A) PDF | HTML Sep 2, 2021
Application brief Precision, Low-Side Current Measurement (Rev. B) Mar 6, 2019
Application brief Integrated-Resistor Current Sensors Simplify PCB Design Jun 30, 2017

Design & development

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

Evaluation board

INA260EVM — High Precision Current Shunt Monitor Evaluation Module

The INA260 Evaluation Module (EVM) is an easy-to-use platform to evaluate the main features and performance of the INA260. The EVM supports current measurements up to 10 A and comes with graphical user interface (GUI) support to read and write to device registers.

User guide: PDF | HTML
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GUI for evaluation module (EVM)

SBOC478 — INA260 EVM GUI

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Simulation model

INA260 IBIS Model

SBOMA95.ZIP (34 KB) - IBIS model
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Calculation tool

ANALOG-ENGINEER-CALC — PC software analog engineer's calculator

The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)

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Calculation tool

SBOR021 — Power Monitor Tool

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Reference design

TIDA-01590 — Reference Design for 1200V Isolated I2C High Side Current Sensing for Solar Combiner Boxes

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 (...)
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Reference design

TIDA-01608 — Isolated Current Sense with Integrated Shunt Resistor and I2C Interface Reference Design

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 (...)
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TSSOP (PW) 16 Ultra Librarian
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