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Monitores de potencia digitales

INA232

ACTIVO

Monitor de potencia digital de salida I²C de 48 V, 16 bits y alta precisión con alerta

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INA232

ACTIVO
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Detalles del producto

Common-mode voltage (max) (V) 48 Common-mode voltage (min) (V) -0.3 Digital interface I2C Resolution (Bits) 16 Input offset (±) (max) (µV) 50 Input offset drift (±) (max) (µV/°C) 0.1 Voltage gain (V/V) 1 CMRR (min) (dB) 120 Supply voltage (max) (V) 5.5 Supply voltage (min) (V) 1.7 Gain error (%) 0.3 Gain error drift (±) (max) (ppm/°C) 30 Features Alert Function, Bidirectional, Intergrated Power Monitor, Low-side Capable Number of channels 1 Power measurement accuracy (%) 0.8 Rating Catalog Operating temperature range (°C) -40 to 125
Common-mode voltage (max) (V) 48 Common-mode voltage (min) (V) -0.3 Digital interface I2C Resolution (Bits) 16 Input offset (±) (max) (µV) 50 Input offset drift (±) (max) (µV/°C) 0.1 Voltage gain (V/V) 1 CMRR (min) (dB) 120 Supply voltage (max) (V) 5.5 Supply voltage (min) (V) 1.7 Gain error (%) 0.3 Gain error drift (±) (max) (ppm/°C) 30 Features Alert Function, Bidirectional, Intergrated Power Monitor, Low-side Capable Number of channels 1 Power measurement accuracy (%) 0.8 Rating Catalog Operating temperature range (°C) -40 to 125
SOT-23-THN (DDF) 8 8.12 mm² 2.9 x 2.8
  • High-side or low-side current sensing
  • Operates from a 1.7-V to 5.5-V power supply
  • Reports current, voltage and power
  • Programmable full scale range: 20mV / 80mV
  • Input common mode range: –0.3 V to 48 V
  • Current monitoring accuracy:
    • 16-bit ADC resolution
    • 0.3% gain error (maximum)
    • 50-µV offset (maximum)
  • Low input bias current: 10 nA (maximum)
  • Configurable averaging options
  • General call addressing allows conversion synchronization among devices
  • Alert limits for over and under current events
  • 1.2-V compliant I2C, SMBus interface
  • Two device address options with four pin selectable address
  • SOT23-8 Package
  • Operating temperature: –40°C and +125°C
  • High-side or low-side current sensing
  • Operates from a 1.7-V to 5.5-V power supply
  • Reports current, voltage and power
  • Programmable full scale range: 20mV / 80mV
  • Input common mode range: –0.3 V to 48 V
  • Current monitoring accuracy:
    • 16-bit ADC resolution
    • 0.3% gain error (maximum)
    • 50-µV offset (maximum)
  • Low input bias current: 10 nA (maximum)
  • Configurable averaging options
  • General call addressing allows conversion synchronization among devices
  • Alert limits for over and under current events
  • 1.2-V compliant I2C, SMBus interface
  • Two device address options with four pin selectable address
  • SOT23-8 Package
  • Operating temperature: –40°C and +125°C

The INA232 device is a 16-bit digital current monitor with an I2C/SMBus-compatible interface that is compliant with a wide range of digital bus voltages such as 1.2 V, 1.8 V, 3.3 V, and 5.0 V. The device monitors the voltage across an external sense resistor and reports values for current, bus voltage, and power.

The INA232 features programmable ADC conversion times and averaging. The device also has a programmable calibration value with an internal multiplier that enables direct readouts of current in amperes and power in watts. The device monitors the bus voltage present on the IN– pin and can alert on over/under current as well as over/under voltage conditions. High input impedance while in current measurement mode allows use of larger current sense resistors needed to measure small value system currents.

The INA232 senses current on common-mode bus voltages that can vary from –0.3 V to 48 V, independent of the supply voltage. The device operates from a single 1.7-V to 5.5-V supply, drawing a typical supply current of 300 µA in normal operation. The device can be placed in a low-power standby mode where the typical operating current is 2.2 µA.

The INA232 device is a 16-bit digital current monitor with an I2C/SMBus-compatible interface that is compliant with a wide range of digital bus voltages such as 1.2 V, 1.8 V, 3.3 V, and 5.0 V. The device monitors the voltage across an external sense resistor and reports values for current, bus voltage, and power.

The INA232 features programmable ADC conversion times and averaging. The device also has a programmable calibration value with an internal multiplier that enables direct readouts of current in amperes and power in watts. The device monitors the bus voltage present on the IN– pin and can alert on over/under current as well as over/under voltage conditions. High input impedance while in current measurement mode allows use of larger current sense resistors needed to measure small value system currents.

The INA232 senses current on common-mode bus voltages that can vary from –0.3 V to 48 V, independent of the supply voltage. The device operates from a single 1.7-V to 5.5-V supply, drawing a typical supply current of 300 µA in normal operation. The device can be placed in a low-power standby mode where the typical operating current is 2.2 µA.
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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Fecha
* Data sheet INA232 48-V, 16-Bit, Current, Voltage, and Power Monitor With an I2C Interface datasheet PDF | HTML 16 dic 2022
Application note Closed Loop Constant Power Drive to Simplify Heater Element Control and Extend Battery Life PDF | HTML 29 ene 2025
Application note Risks and Prevention of ESD, EOS, and Latch Up Events for Current Sense Amplifiers PDF | HTML 18 nov 2024
Technical article 4 key current-sensing design trends that are powering electrification PDF | HTML 21 feb 2023
User guide Migration From INA219 to INA232 PDF | HTML 24 ene 2023
Certificate INA232EVM EU RoHS Declaration of Conformity (DoC) 17 ene 2023
Application note Digital Interfaces for Current Sensing Devices (Rev. A) PDF | HTML 30 sep 2021
Application note Getting Started with Digital Power Monitors (Rev. A) PDF | HTML 02 sep 2021

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

INA234_236EVM — Módulo de evaluación INA232, INA234 e INA236 para monitores de corriente/tensión/potencia.

Este módulo de evaluación (EVM) es una plataforma fácil de usar para evaluar las funciones principales y el rendimiento de INA232, INA234 o INA236. El EVM dispone de una interfaz gráfica de usuario para leer y escribir registros de dispositivo.
Guía del usuario: PDF | HTML
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IDE, configuración, compilador o depurador

ASC-STUDIO-INA232 — ASC Studio (SysConfig) for configuring all aspects of the INA232 current sensor

SysConfig can be used to help simplify configuration challenges and accelerate software development with the INA232 current sensor.
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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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PSPICE-FOR-TI — PSpice® para herramienta de diseño y simulación de TI

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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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Encapsulado Pines Símbolos CAD, huellas y modelos 3D
SOT-23-THN (DDF) 8 Ultra Librarian
Se aplican los Términos y condiciones estándar de TI para los elementos de evaluación.

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

Foros de TI E2E™ con asistencia técnica de los ingenieros de TI

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