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INA226-Q1

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Monitor de corriente/tensión/potencia de salida I2C AEC-Q100 ultrapreciso de 36 V y 16 bits con aler

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INA226-Q1

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Detalles del producto

Common-mode voltage (max) (V) 36 Common-mode voltage (min) (V) 0 Digital interface I2C, SMBus Resolution (Bits) 16 Input offset (±) (max) (µV) 10 Input offset drift (±) (max) (µV/°C) 0.1 Input offset drift (±) (typ) (µV/°C) 0.02 Voltage gain (V/V) 1 CMRR (min) (dB) 126 Supply voltage (max) (V) 5.5 Supply voltage (min) (V) 2.7 Iq (max) (mA) 0.42 Gain error (%) 0.1 Gain error drift (±) (max) (ppm/°C) 50 Features Alert Function, Bidirectional, Intergrated Power Monitor, Low-side Capable, Ultra precise Number of channels 1 Power measurement accuracy (%) 0.2 TI functional safety category Functional Safety-Capable Rating Automotive Operating temperature range (°C) -40 to 125
Common-mode voltage (max) (V) 36 Common-mode voltage (min) (V) 0 Digital interface I2C, SMBus Resolution (Bits) 16 Input offset (±) (max) (µV) 10 Input offset drift (±) (max) (µV/°C) 0.1 Input offset drift (±) (typ) (µV/°C) 0.02 Voltage gain (V/V) 1 CMRR (min) (dB) 126 Supply voltage (max) (V) 5.5 Supply voltage (min) (V) 2.7 Iq (max) (mA) 0.42 Gain error (%) 0.1 Gain error drift (±) (max) (ppm/°C) 50 Features Alert Function, Bidirectional, Intergrated Power Monitor, Low-side Capable, Ultra precise Number of channels 1 Power measurement accuracy (%) 0.2 TI functional safety category Functional Safety-Capable Rating Automotive Operating temperature range (°C) -40 to 125
VSSOP (DGS) 10 14.7 mm² 3 x 4.9
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to 125°C
    • Device HBM ESD classification 2
    • Device CDM ESD classification C4B
  • Functional Safety-Capable
  • Senses bus voltages from 0V to 36V
  • High-side or low-side sensing
  • Reports current, voltage, and power
  • High accuracy:
    • Gain error: 0.1% (maximum)
    • Offset: 10µV (maximum)
  • Configurable averaging options
  • 16 programmable addresses
  • Operates from 2.7V to 5.5V power supply
  • 10-pin DGS (VSSOP) package
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to 125°C
    • Device HBM ESD classification 2
    • Device CDM ESD classification C4B
  • Functional Safety-Capable
  • Senses bus voltages from 0V to 36V
  • High-side or low-side sensing
  • Reports current, voltage, and power
  • High accuracy:
    • Gain error: 0.1% (maximum)
    • Offset: 10µV (maximum)
  • Configurable averaging options
  • 16 programmable addresses
  • Operates from 2.7V to 5.5V power supply
  • 10-pin DGS (VSSOP) package

The INA226-Q1 is a current shunt and power monitor with an I2C™- or SMBUS-compatible interface. The device monitors both a shunt voltage drop and bus supply voltage. Programmable calibration value, conversion times, and averaging, combined with an internal multiplier, enable direct readouts of current in amperes and power in watts.

The INA226-Q1 senses current on common-mode bus voltages that can vary from 0V to 36V, independent of the supply voltage. The device operates from a single 2.7V to 5.5V supply, drawing a typical of 330µA of supply current. The device is specified over the operating temperature range between –40°C and 125°C and features up to 16 programmable addresses on the I2C-compatible interface.

The INA226-Q1 is a current shunt and power monitor with an I2C™- or SMBUS-compatible interface. The device monitors both a shunt voltage drop and bus supply voltage. Programmable calibration value, conversion times, and averaging, combined with an internal multiplier, enable direct readouts of current in amperes and power in watts.

The INA226-Q1 senses current on common-mode bus voltages that can vary from 0V to 36V, independent of the supply voltage. The device operates from a single 2.7V to 5.5V supply, drawing a typical of 330µA of supply current. The device is specified over the operating temperature range between –40°C and 125°C and features up to 16 programmable addresses on the I2C-compatible interface.
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Documentación técnica

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* Data sheet INA226-Q1 AEC-Q100, 36V, 16-Bit, Ultra-Precise, I2C Output Current, Voltage, and Power Monitor With Alert datasheet (Rev. B) PDF | HTML 17 sep 2024
Application note Risks and Prevention of ESD, EOS, and Latch Up Events for Current Sense Amplifiers PDF | HTML 18 nov 2024
Functional safety information INA226 Functional Safety FIT Rate, FMD and Pin FMA (Rev. B) 12 nov 2024
Application brief Integrating the Current Sensing Resistor (Rev. D) PDF | HTML 07 abr 2023
Application note Using a PCB Copper Trace as a Current-Sense Shunt Resistor PDF | HTML 25 ene 2022
Application note Digital Interfaces for Current Sensing Devices (Rev. A) PDF | HTML 30 sep 2021
Application brief Integrating the Current Sensing Signal Path (Rev. B) PDF | HTML 29 sep 2021
Application brief Integrated, Current Sensing Analog-to-Digital Converter (Rev. A) PDF | HTML 28 sep 2021
Selection guide Current Sense Amplifiers (Rev. E) 20 sep 2021
Application note Getting Started with Digital Power Monitors (Rev. A) PDF | HTML 02 sep 2021
Application brief Shunt-Based Current-Sensing Solutions for BMS Applications in HEVs and EVs (Rev. B) PDF | HTML 02 feb 2021
Technical article Current sensing in battery management systems PDF | HTML 30 may 2019
Application brief Precision, Low-Side Current Measurement (Rev. B) 06 mar 2019
Application brief External current sense amps vs integrated onboard amplifiers for current sensing (Rev. B) 19 feb 2019
Application brief Current sensing with INA226-Q1 in HEV and EV BMS subsystems (Rev. A) 31 ene 2019
Technical article Understanding current sensing in HEV/EV batteries PDF | HTML 02 ago 2017
Application brief Energy and Power Monitoring with Digital Current Sensors 25 may 2017
White paper Overcurrent protection enables more efficient and reliable systems 16 may 2016
Application note Applying I²C Compatible Temperature Sensors in Systems with Slow Clock Edges 01 dic 2015
Application note Understanding the I2C Bus PDF | HTML 30 jun 2015

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Placa de evaluación

INA226EVM — Módulo de evaluación INA226

El módulo de evaluación (EVM) INA226 es una plataforma fácil de usar para evaluar las funciones principales y el rendimiento del INA226. El EVM admite mediciones de corriente de hasta 10 A y dispone de una interfaz gráfica de usuario (GUI) para leer y escribir en los registros del dispositivo.

Guía del usuario: PDF | HTML
No disponible en TI.com
Ejemplo de código o demostración

SBOC410 — INA226EVM Rev A Source Code

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GUI para el módulo de evaluación (EVM)

SBOC409 — INA226EVM Rev A Software

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Productos y hardware compatibles
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IDE, configuración, compilador o depurador

ASC-STUDIO-INA226 — ASC studio (SysConfig) for configuring all aspects of the INA226 digital power monitor

SysConfig can be used to help simplify configuration challenges and accelerate software development with the INA226 digital power monitor.
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Modelo de simulación

INA226 IBIS Model

SBOM458.ZIP (34 KB) - IBIS Model
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Herramienta de cálculo

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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Herramienta de cálculo

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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Herramienta de cálculo

SBOR021 — Power Monitor Tool

Power Monitor Tool
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Herramienta de simulación

PSPICE-FOR-TI — PSpice® para herramienta de diseño y simulación de TI

PSpice® para TI es un entorno de diseño y simulación que ayuda a evaluar la funcionalidad de los circuitos analógicos. Esta completa suite de diseño y simulación utiliza un motor de análisis analógico de Cadence®. Disponible sin ningún costo, PSpice para TI incluye una de las bibliotecas de modelos (...)
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TINA-TI — Programa de simulación analógica basado en SPICE

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 (...)
Guía del usuario: PDF
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Diseños de referencia

TIDA-00302 — Diseño de referencia del monitor de derivación de corriente con solidez transitoria

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
Esquema: PDF
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
VSSOP (DGS) 10 Ultra Librarian
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Pedidos y calidad

Información incluida:
  • RoHS
  • REACH
  • Marcado del dispositivo
  • Acabado de plomo/material de la bola
  • Clasificación de nivel de sensibilidad a la humedad (MSL)/reflujo máximo
  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
  • Contenido del material
  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
Información incluida:
  • Lugar de fabricación
  • Lugar de ensamblaje

Soporte y capacitación

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