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INA232

現行

具有警示功能的 48-V、16 位元高精密 I²C 輸出數位電源監控器

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產品規格表

INA232

現行
產品規格表 立即訂購

產品詳細資料

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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技術文件

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重要文件 類型 標題 格式選項 日期
* Data sheet INA232 48-V, 16-Bit, Current, Voltage, and Power Monitor With an I2C Interface datasheet PDF | HTML 2022年 12月 16日
Application note Closed Loop Constant Power Drive to Simplify Heater Element Control and Extend Battery Life PDF | HTML 2025年 1月 29日
Application note Risks and Prevention of ESD, EOS, and Latch Up Events for Current Sense Amplifiers PDF | HTML 2024年 11月 18日
Technical article 4 key current-sensing design trends that are powering electrification PDF | HTML 2023年 2月 21日
User guide Migration From INA219 to INA232 PDF | HTML 2023年 1月 24日
Certificate INA232EVM EU RoHS Declaration of Conformity (DoC) 2023年 1月 17日
Application note Digital Interfaces for Current Sensing Devices (Rev. A) PDF | HTML 2021年 9月 30日
Application note Getting Started with Digital Power Monitors (Rev. A) PDF | HTML 2021年 9月 2日

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如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

INA234_236EVM — 適用電流/電壓/電源監控器的 INA232、INA234 和 INA236 評估模組

此評估模組 (EVM) 是一款易於使用的平台，可評估 INA232、INA234 或 INA236 的主要功能與性能。EVM 隨附 GUI 支援，可讀取及寫入至裝置暫存器。
使用指南: PDF | HTML
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IDE、配置、編譯器或偵錯程式

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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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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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® for TI 設計與模擬工具

PSpice® for TI 是有助於評估類比電路功能的設計和模擬環境。這款全功能設計和模擬套件使用 Cadence® 的類比分析引擎。PSpice for TI 包括業界最大的模型庫之一，涵蓋我們的類比和電源產品組合，以及特定類比行為模型，且使用無需支付費用。

PSpice for TI 設計和模擬環境可讓您使用其內建函式庫來模擬複雜的混合訊號設計。在進行佈局和製造之前，建立完整的終端設備設計和解決方案原型，進而縮短上市時間並降低開發成本。 

在 PSpice for TI 設計與模擬工具中，您可以搜尋 TI (...)
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TINA-TI — 基於 SPICE 的類比模擬程式

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 (...)
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封裝 針腳 CAD 符號、佔位空間與 3D 模型
SOT-23-THN (DDF) 8 Ultra Librarian
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  • 進行中的可靠性監測
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