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配備整合式分流電阻器的類比電流感測放大器

INA250-Q1

現行

具整合式分流電阻器的 AEC-Q100、36V、雙向、精密電流感測放大器

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產品規格表

INA250-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 Input offset (±) (max) (µV) 20000, 30000, 50000, 100000 Gain error (%) 0.75 Gain error drift (±) (max) (ppm/°C) 45 CMRR (min) (dB) 100 Bandwidth (kHz) 11, 35, 50 Supply voltage (max) (V) 36 Supply voltage (min) (V) 2.7 Iq (max) (mA) 0.35 Features Bidirectional, Integrated Shunt, Low-side Capable Rating Automotive TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125
Common-mode voltage (max) (V) 36 Common-mode voltage (min) (V) 0 Input offset (±) (max) (µV) 20000, 30000, 50000, 100000 Gain error (%) 0.75 Gain error drift (±) (max) (ppm/°C) 45 CMRR (min) (dB) 100 Bandwidth (kHz) 11, 35, 50 Supply voltage (max) (V) 36 Supply voltage (min) (V) 2.7 Iq (max) (mA) 0.35 Features Bidirectional, Integrated Shunt, Low-side Capable Rating Automotive TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125
TSSOP (PW) 16 32 mm² 5 x 6.4
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C5
  • Functional Safety-Capable
  • Precision Integrated Shunt Resistor:
    • Shunt Resistor: 2-mΩ
    • Shunt Resistor Tolerance: 0.1% (Maximum)
    • 15 A Continuous from –40°C to +85°C
    • 0°C to +125°C Temperature Coefficient: 10 ppm/°C
  • High Accuracy:
    • Gain Error (Shunt and Amplifier): 0.3% (Maximum)
    • Offset Current: 50 mA (Maximum, INA250A2-Q1)
  • Four Available Gains:
    • INA250A1-Q1: 200 mV/A
    • INA250A2-Q1: 500 mV/A
    • INA250A3-Q1: 800 mV/A
    • INA250A4-Q1: 2 V/A
  • Wide Common-Mode Range: –0.1 V to 36 V
  • Specified Operating Temperature: –40°C to +125°C
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C5
  • Functional Safety-Capable
  • Precision Integrated Shunt Resistor:
    • Shunt Resistor: 2-mΩ
    • Shunt Resistor Tolerance: 0.1% (Maximum)
    • 15 A Continuous from –40°C to +85°C
    • 0°C to +125°C Temperature Coefficient: 10 ppm/°C
  • High Accuracy:
    • Gain Error (Shunt and Amplifier): 0.3% (Maximum)
    • Offset Current: 50 mA (Maximum, INA250A2-Q1)
  • Four Available Gains:
    • INA250A1-Q1: 200 mV/A
    • INA250A2-Q1: 500 mV/A
    • INA250A3-Q1: 800 mV/A
    • INA250A4-Q1: 2 V/A
  • Wide Common-Mode Range: –0.1 V to 36 V
  • Specified Operating Temperature: –40°C to +125°C

The automotive qualified INA250-Q1 is a voltage-output, current-sensing amplifier family that integrates an internal precision shunt resistor to enable high-accuracy current measurements at common-mode voltages that may vary from 0 V to 36 V, independent of the supply voltage.

The INA250-Q1 family is available in four output voltage scales: 200 mV/A, 500 mV/A, 800 mV/A, and 2 V/A. This device is fully tested and specified for continuous currents up to 10 amps at the maximum temperature of +125°C. The INA250-Q1 device operates from a single 2.7-V to 36-V supply and draws a maximum of 300 µA of supply current. All INA250-Q1 gain versions are specified over the extended operating temperature range of –40°C to +125°C, and are available in a TSSOP-16 package.

The automotive qualified INA250-Q1 is a voltage-output, current-sensing amplifier family that integrates an internal precision shunt resistor to enable high-accuracy current measurements at common-mode voltages that may vary from 0 V to 36 V, independent of the supply voltage.

The INA250-Q1 family is available in four output voltage scales: 200 mV/A, 500 mV/A, 800 mV/A, and 2 V/A. This device is fully tested and specified for continuous currents up to 10 amps at the maximum temperature of +125°C. The INA250-Q1 device operates from a single 2.7-V to 36-V supply and draws a maximum of 300 µA of supply current. All INA250-Q1 gain versions are specified over the extended operating temperature range of –40°C to +125°C, and are available in a TSSOP-16 package.
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重要文件 類型 標題 格式選項 日期
* Data sheet INA250-Q1 AEC-Q100, 36-V, Bidirectional, Precision Current Sense Amplifier With Integrated Shunt Resistor datasheet (Rev. C) PDF | HTML 2023年 9月 13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
Application brief Integrating the Current Sensing Resistor (Rev. D) PDF | HTML 2023年 4月 7日
Functional safety information INA250-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA 2020年 3月 23日
Application brief Precision, Low-Side Current Measurement (Rev. B) 2019年 3月 6日
Application brief Benefits of Intergated Low Inductive Shunt for PWM Applications 2017年 6月 17日
Design guide 30-A Range Bidirectional Current Shunt Monitor Design Guide 2015年 6月 30日

設計與開發

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

INA250EVM — INA250 電流分流監控器評估模組

INA250 是整合分流器的電流分流監視器系列。INA250EVM (INA250AxEVM) 旨在提供該系列中 INA250A1、INA250A2、INA250A3 與 INA250A4 裝置的基本功能評估。此固定裝置配置並非用作目標電路模型，亦非針對電磁相容性 (EMC) 測試所採取的配置。

 

使用指南: PDF
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模擬型號

INA250 TINA-TI Reference Design

SBOM964.TSC (612 KB) - TINA-TI Reference Design
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模擬型號

INA250 TINA-TI Spice Model

SBOM963.ZIP (33 KB) - TINA-TI Spice Model
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模擬型號

INA250A1 PSpice Model

SBOMBC7.ZIP (23 KB) - PSpice Model
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模擬型號

INA250A2 PSpice Model

SBOMBF7.ZIP (24 KB) - PSpice Model
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模擬型號

INA250A3 PSpice Model

SBOMBF5.ZIP (24 KB) - PSpice Model
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模擬型號

INA250A4 PSpice Model

SBOMBC3.ZIP (24 KB) - PSpice 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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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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模擬工具

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 (...)
使用指南: PDF
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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

此高壓側電流分流監控器可用於測量電流通過电流感测電阻器時在电阻器上所形成的電壓。

此外，實作外部保護電路以提供突波和快速暫態保護，並針對 IEC61000-4-4 和 IEC61000-4-5 展示不同的抗擾度等級。

Design guide: PDF
電路圖: PDF
參考設計

TIDA-00614 — 30-A 範圍雙向電流分流監控器參考設計

此經過驗證的設計能夠精確測量匯流排上 30A 範圍內的電流，匯流排共模電壓最高可達 36V，工作溫度範圍為 -40°C 至 +85°C。此設計在接地參考電壓下可測量 0A 至 30A 的電流，在 16V 參考電壓下可測量 -30A 至 0A 的電流。  此設計將兩個 INA250A2 裝置的輸出相加，產生一個接地參考輸出電壓。  INA250 是一款電壓輸出、電流檢測放大器系列，整合了一個內部分流電阻器，可實現高準確度電流測量。
Design guide: PDF
電路圖: PDF
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TSSOP (PW) 16 Ultra Librarian
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