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電流感測放大器
數位電源監測器

INA2227

現行

具有 I²C 介面的雙通道、16 位元、E3 驅動器功能電流、電壓、電源與能量監視器

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產品規格表

INA2227

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, SMBus Resolution (Bits) 16 Input offset (±) (max) (µV) 75 Input offset drift (±) (max) (µV/°C) 0.5 Voltage gain (V/V) 1 CMRR (min) (dB) 110 Iq (max) (mA) 0.5 Gain error (%) 0.5 Gain error drift (±) (max) (ppm/°C) 50 Features Alert Function, Bidirectional, Intergrated Power Monitor, Low-side Capable Number of channels 2 Power measurement accuracy (%) 1 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, SMBus Resolution (Bits) 16 Input offset (±) (max) (µV) 75 Input offset drift (±) (max) (µV/°C) 0.5 Voltage gain (V/V) 1 CMRR (min) (dB) 110 Iq (max) (mA) 0.5 Gain error (%) 0.5 Gain error drift (±) (max) (ppm/°C) 50 Features Alert Function, Bidirectional, Intergrated Power Monitor, Low-side Capable Number of channels 2 Power measurement accuracy (%) 1 Rating Catalog Operating temperature range (°C) -40 to 125
DSBGA (YBJ) 16 2.56 mm² (1.6 mm × 1.6 mm)
  • High-side or low-side current sensing
  • Operates from a 1.7V to 5.5V power supply
  • Reports current, voltage, power, and energy
  • Programmable full scale range: 20mV / 80mV
  • Input common mode range: –0.3V to 48V
  • Current monitoring accuracy:
    • 16-bit ADC resolution
    • 0.5% gain error (maximum)
    • 75µV offset (maximum)
  • Power monitoring accuracy:
    • 1% full scale (maximum)
  • Energy monitoring accuracy:
    • 1.5% full scale (maximum)
  • Low input bias currents: 5nA (maximum)
  • Low disable current: 50nA (maximum)
  • Configurable averaging options
  • Alert limits for over and under current events
  • 1.2V compliant I2C, SMBus interface
  • 16-pin selectable addresses
  • DSBGA-16 Package (1.5mm × 1.5mm)
  • High-side or low-side current sensing
  • Operates from a 1.7V to 5.5V power supply
  • Reports current, voltage, power, and energy
  • Programmable full scale range: 20mV / 80mV
  • Input common mode range: –0.3V to 48V
  • Current monitoring accuracy:
    • 16-bit ADC resolution
    • 0.5% gain error (maximum)
    • 75µV offset (maximum)
  • Power monitoring accuracy:
    • 1% full scale (maximum)
  • Energy monitoring accuracy:
    • 1.5% full scale (maximum)
  • Low input bias currents: 5nA (maximum)
  • Low disable current: 50nA (maximum)
  • Configurable averaging options
  • Alert limits for over and under current events
  • 1.2V compliant I2C, SMBus interface
  • 16-pin selectable addresses
  • DSBGA-16 Package (1.5mm × 1.5mm)

The INA2227 device is a dual channel 16-bit digital current monitor with an I2C/SMBus-compatible interface that is compliant with digital bus voltages from 1.2V to 5V. The device monitors the voltage across an external sense resistor and reports values for shunt voltage, bus voltage, current, power, and energy for each channel.

The INA2227 features programmable ADC conversion times and averaging that is common for all channels. Each channel has a programmable calibration value with an internal multiplier that enables direct readouts of current in amperes, power in watts, and energy in joules. Each channel has a dedicated VBUS pin to monitor the bus voltage and can alert on overcurrent and undercurrent conditions, as well as on overvoltage and undervoltage conditions.High input impedance while in current measurement mode allows use of larger current sense resistors needed to measure small value system currents.

The INA2227 senses current on common-mode bus voltages that can vary from –0.3V to 48V, independent of the supply voltage. The device operates from a single 1.7V to 5.5V supply, drawing a typical supply current of 400µA in normal operation. The device can be placed in a low-power standby mode where the typical operating current is 2.5µA and can be fully disabled using the enable pin to achieve an supply current less than 50nA. The device is specified over the operating temperature range between –40°C and 125°C and features up to 16 programmable addresses.

The INA2227 device is a dual channel 16-bit digital current monitor with an I2C/SMBus-compatible interface that is compliant with digital bus voltages from 1.2V to 5V. The device monitors the voltage across an external sense resistor and reports values for shunt voltage, bus voltage, current, power, and energy for each channel.

The INA2227 features programmable ADC conversion times and averaging that is common for all channels. Each channel has a programmable calibration value with an internal multiplier that enables direct readouts of current in amperes, power in watts, and energy in joules. Each channel has a dedicated VBUS pin to monitor the bus voltage and can alert on overcurrent and undercurrent conditions, as well as on overvoltage and undervoltage conditions.High input impedance while in current measurement mode allows use of larger current sense resistors needed to measure small value system currents.

The INA2227 senses current on common-mode bus voltages that can vary from –0.3V to 48V, independent of the supply voltage. The device operates from a single 1.7V to 5.5V supply, drawing a typical supply current of 400µA in normal operation. The device can be placed in a low-power standby mode where the typical operating current is 2.5µA and can be fully disabled using the enable pin to achieve an supply current less than 50nA. The device is specified over the operating temperature range between –40°C and 125°C and features up to 16 programmable addresses.
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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 INA2227 48V, Dual Channel, 16-Bit, Current, Voltage, Power, and Energy Monitor With an I2 C Interface datasheet PDF | HTML 2025/6/19
證書 INA2227EVM EU Declaration of Conformity (DoC) 2025/5/16

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開發板

INA2227EVM — INA2227 評估模組

INA2227 評估模組 (EVM) 是可評估 INA2227 主要功能與性能的平台。EVM 支援每通道高達 10A 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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該工具的輸出包括 C 標頭檔案和程式碼檔案，這些檔案可以單獨使用，也可以與 TI MCU 的軟體開發套件 (SDK) 範例一起使用。

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驅動程式或資料庫

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Energy Estimation Engine (E3) is a software framework that tracks and attributes power consumption to specific hardware components and software processes. It leverages the EMI (Energy Metering Interface) to report the energy consumption of various power rails.
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E3-CONSOLE-APPLICATION-SW — Energy Estimation Engine (E3) driver evaluation software

The E3 Console application uses the Energy Meter Interface (EMI) IOCTLs defined by Microsoft to extract power rail data and measurement. This application can be used to evaluate TI's E3 drivers.
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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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ANALOG-ENGINEER-CALC — PC software analog engineer's calculator

類比工程師的計算機旨在加速類比電路設計工程師定期使用的許多重複計算。此基於 PC 的工具提供圖形介面，列出各種常見計算，從使用回饋電阻器設定運算放大器增益到選擇適當的電路設計元件以穩定類比數位轉換器 (ADC) 驅動緩衝電路。

除了作為獨立工具使用外，此計算機還與類比工程師口袋參考中描述的概念相得益彰。

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CS-AMPLIFIER-ERROR-TOOL — Current Sense Amplifier Comparison and Error Tool

此 Excel 計算機提供兩個與五個標準電流感測放大器的比較，並提供包含各裝置基本參數的圖表。此計算機也會採用使用者的系統條件輸入，例如共模電壓、供應電壓、分流電阻器值與公差，然後在可調整電流範圍中繪製錯誤曲線。此外，計算機會根據計算的全刻度輸入電壓除以最大量測電流，輸出最大分流值 (mΩ)。
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DSBGA (YBJ) 16 Ultra Librarian
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