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INA226-Q1

現行

具有警報功能的 AEC-Q100、36V、16 位元、超精確、i2c 輸出電流/電壓/功率/電源監控器

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產品規格表

INA226-Q1

現行
產品規格表 立即訂購

產品詳細資料

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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重要文件 類型 標題 格式選項 日期
* 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 2024年 9月 17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
Functional safety information INA226 Functional Safety FIT Rate, FMD and Pin FMA (Rev. B) 2024年 11月 12日
Application brief Integrating the Current Sensing Resistor (Rev. D) PDF | HTML 2023年 4月 7日
Application note Using a PCB Copper Trace as a Current-Sense Shunt Resistor PDF | HTML 2022年 1月 25日
Application note Digital Interfaces for Current Sensing Devices (Rev. A) PDF | HTML 2021年 9月 30日
Application brief Integrating the Current Sensing Signal Path (Rev. B) PDF | HTML 2021年 9月 29日
Application brief Integrated, Current Sensing Analog-to-Digital Converter (Rev. A) PDF | HTML 2021年 9月 28日
Selection guide Current Sense Amplifiers (Rev. E) 2021年 9月 20日
Application note Getting Started with Digital Power Monitors (Rev. A) PDF | HTML 2021年 9月 2日
Application brief Shunt-Based Current-Sensing Solutions for BMS Applications in HEVs and EVs (Rev. B) PDF | HTML 2021年 2月 2日
Technical article Current sensing in battery management systems PDF | HTML 2019年 5月 30日
Application brief Precision, Low-Side Current Measurement (Rev. B) 2019年 3月 6日
Application brief External current sense amps vs integrated onboard amplifiers for current sensing (Rev. B) 2019年 2月 19日
Application brief Current sensing with INA226-Q1 in HEV and EV BMS subsystems (Rev. A) 2019年 1月 31日
Technical article Understanding current sensing in HEV/EV batteries PDF | HTML 2017年 8月 2日
Application brief Energy and Power Monitoring with Digital Current Sensors 2017年 5月 25日
White paper Overcurrent protection enables more efficient and reliable systems 2016年 5月 16日
Application note Applying I²C Compatible Temperature Sensors in Systems with Slow Clock Edges 2015年 12月 1日
Application note Understanding the I2C Bus PDF | HTML 2015年 6月 30日

設計與開發

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開發板

INA226EVM — INA226 評估模組

INA226 評估模組 (EVM) 是一款易於使用的平台，可評估 INA226 的主要功能與性能。EVM 支援高達 10 A 的電流量測，並隨附圖形使用者介面 (GUI) 支援，可讀取及寫入裝置暫存器。

使用指南: PDF | HTML
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程式碼範例或展示

SBOC410 — INA226EVM Rev A Source Code

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開發模組 (EVM) 的 GUI

SBOC409 — INA226EVM Rev A Software

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IDE、配置、編譯器或偵錯程式

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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模擬型號

INA226 IBIS Model

SBOM458.ZIP (34 KB) - IBIS Model
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計算工具

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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計算工具

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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SBOR021 — Power Monitor Tool

Power Monitor Tool
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模擬工具

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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參考設計

TIDA-00302 — 具瞬態穩定性的電流分流監控器參考設計

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 (...)

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電路圖: PDF
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  • 進行中的可靠性監測
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