INA185

現行

採用超小型 SOT-563 封裝的 26V、350kHz、雙向、高精密度電流感測放大器

產品詳細資料

Product type Analog output Common-mode voltage (max) (V) 26 Common-mode voltage (min) (V) -0.2 Input offset (±) (max) (µV) 55, 135 Input offset drift (±) (typ) (µV/°C) 0.2 Features Bidirectional, High precision, Low-side Capable Rating Catalog Voltage gain (V/V) 20, 50, 100, 200, 500 CMRR (min) (dB) 86, 96, 106 Bandwidth (kHz) 60, 105, 150, 210, 350 Supply voltage (max) (V) 5.5 Supply voltage (min) (V) 2.7 Iq (max) (mA) 0.3 Number of channels 1 Comparators (#) 0 Gain error (%) 0.12, 0.17 Gain error drift (±) (max) (ppm/°C) 8 Slew rate (V/µs) 2 Operating temperature range (°C) -40 to 125
Product type Analog output Common-mode voltage (max) (V) 26 Common-mode voltage (min) (V) -0.2 Input offset (±) (max) (µV) 55, 135 Input offset drift (±) (typ) (µV/°C) 0.2 Features Bidirectional, High precision, Low-side Capable Rating Catalog Voltage gain (V/V) 20, 50, 100, 200, 500 CMRR (min) (dB) 86, 96, 106 Bandwidth (kHz) 60, 105, 150, 210, 350 Supply voltage (max) (V) 5.5 Supply voltage (min) (V) 2.7 Iq (max) (mA) 0.3 Number of channels 1 Comparators (#) 0 Gain error (%) 0.12, 0.17 Gain error drift (±) (max) (ppm/°C) 8 Slew rate (V/µs) 2 Operating temperature range (°C) -40 to 125
SOT-5X3 (DRL) 6 2.56 mm² 1.6 x 1.6 SOT-SC70 (DCK) 6 4.2 mm² 2 x 2.1
  • SC70 and SOT-563 packages
    • SC70 offers compatibility to existing solutions
    • SOT-563 is 39% smaller footprint than SC70
    • SOT-563 dimensions is 1.6 mm × 1.6 mm × 0.55 mm
  • Common-mode range (VCM): –0.2 V to +26 V
  • High bandwidth: 350 kHz (A1 devices)
  • Offset voltage:
    • ±55 µV (maximum) at VCM = 0 V
    • ±100 µV (maximum) at VCM = 12 V (A4 device)
  • Output slew rate: 2 V/µs
  • Bidirectional current-sensing capability
  • Accuracy:
    • Maximum gain error (A1, A2, A3): ±0.2%
    • Maximum offset drift: 0.5 µV/°C
  • Gain options:
    • 20 V/V (A1 devices)
    • 50 V/V (A2 devices)
    • 100 V/V (A3 devices)
    • 200 V/V (A4 devices)
  • Quiescent current: 260 µA (maximum)
  • SC70 and SOT-563 packages
    • SC70 offers compatibility to existing solutions
    • SOT-563 is 39% smaller footprint than SC70
    • SOT-563 dimensions is 1.6 mm × 1.6 mm × 0.55 mm
  • Common-mode range (VCM): –0.2 V to +26 V
  • High bandwidth: 350 kHz (A1 devices)
  • Offset voltage:
    • ±55 µV (maximum) at VCM = 0 V
    • ±100 µV (maximum) at VCM = 12 V (A4 device)
  • Output slew rate: 2 V/µs
  • Bidirectional current-sensing capability
  • Accuracy:
    • Maximum gain error (A1, A2, A3): ±0.2%
    • Maximum offset drift: 0.5 µV/°C
  • Gain options:
    • 20 V/V (A1 devices)
    • 50 V/V (A2 devices)
    • 100 V/V (A3 devices)
    • 200 V/V (A4 devices)
  • Quiescent current: 260 µA (maximum)

The INA185 current sense amplifier is designed for use in cost-sensitive space constrained applications. This device is a bidirectional, current-sense amplifier (also called a current-shunt monitor) that senses the voltage drop across a current-sense resistor at common-mode voltages from –0.2 V to +26 V, independent of the supply voltage. The INA185 integrates a matched resistor gain network in four, fixed-gain device options: 20 V/V, 50 V/V, 100 V/V, or 200 V/V. This matched gain resistor network minimizes gain error and reduces the temperature drift.

The INA185 operates from a single 2.7-V to 5.5-V power supply. The device draws a maximum supply current of 260 µA and features high slew rate and bandwidth making this device an excellent choice for many power-supply and motor-control applications.

The INA185 is available in an industry standard SC70 package and low profile 6-pin, SOT-563 package. The SOT-563 package has a body size of size of only 2.56 mm2, including the device pins. All device options are specified over the extended operating temperature range of –40°C to +125°C.

The INA185 current sense amplifier is designed for use in cost-sensitive space constrained applications. This device is a bidirectional, current-sense amplifier (also called a current-shunt monitor) that senses the voltage drop across a current-sense resistor at common-mode voltages from –0.2 V to +26 V, independent of the supply voltage. The INA185 integrates a matched resistor gain network in four, fixed-gain device options: 20 V/V, 50 V/V, 100 V/V, or 200 V/V. This matched gain resistor network minimizes gain error and reduces the temperature drift.

The INA185 operates from a single 2.7-V to 5.5-V power supply. The device draws a maximum supply current of 260 µA and features high slew rate and bandwidth making this device an excellent choice for many power-supply and motor-control applications.

The INA185 is available in an industry standard SC70 package and low profile 6-pin, SOT-563 package. The SOT-563 package has a body size of size of only 2.56 mm2, including the device pins. All device options are specified over the extended operating temperature range of –40°C to +125°C.

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重要文件 類型 標題 格式選項 日期
* Data sheet INA185 26-V, 350-kHz, Bidirectional, High-Precision Current Sense Amplifier in Ultra-Small (SOT-563) Package datasheet (Rev. A) PDF | HTML 2023年 11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
Circuit design Precision overcurrent latch circuits (Rev. A) PDF | HTML 2024年 9月 27日
Application note Using a PCB Copper Trace as a Current-Sense Shunt Resistor PDF | HTML 2022年 1月 25日
Circuit design Circuit to measure multiple redundant source currents with singled-ended signal PDF | HTML 2021年 6月 28日
Circuit design Adjustable-gain, current-output, high-side current-sensing circuit 2019年 8月 9日
Technical article Minimizing input power protection for smart speakers and smart displays PDF | HTML 2019年 6月 24日
Technical article Use fast, precise overcurrent detection to enable diagnostics in automotive safety PDF | HTML 2019年 6月 24日
Circuit design Fast-response overcurrent event detection circuit 2019年 5月 27日
Application brief Bidirectional, Low-Side Phase Current Sensing With Onboard Overcurrent Detection (Rev. D) 2019年 3月 6日
Application brief Precision, Low-Side Current Measurement (Rev. B) 2019年 3月 6日

設計與開發

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開發板

INA185EVM — INA185 電流感測評估模組

INA185 是一款電流感測監測器解決方案,以小型封裝提供易用性和高性能。  INA185EVM 旨在提供對裝置系列的基本功能評估。此固定裝置配置不作為目標電路模型使用,也非為電磁 (EMI) 測試進行布局。INA185EVM 包含單一 PCB,可分為 4 個獨立部分以評估不同的裝置變體。
使用指南: PDF
TI.com 無法提供
模擬型號

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計算工具

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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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支援產品和硬體

設計工具

CIRCUIT060035 — 具有窗型比較器電路的雙向電流感測

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設計工具

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設計工具

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設計工具

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使用指南: PDF
參考設計

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Design guide: PDF
參考設計

TIDA-00302 — 具瞬態穩定性的電流分流監控器參考設計

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Additionally, an external protection circuit is implemented to provide surge and fast-transient protection and demonstrate the different immunity levels to (...)

Design guide: PDF
電路圖: PDF
封裝 針腳 CAD 符號、佔位空間與 3D 模型
SOT-5X3 (DRL) 6 Ultra Librarian
SOT-SC70 (DCK) 6 Ultra Librarian

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  • RoHS
  • REACH
  • 產品標記
  • 鉛塗層/球物料
  • MSL 等級/回焊峰值
  • MTBF/FIT 估算值
  • 材料內容
  • 認證摘要
  • 進行中的可靠性監測
內含資訊:
  • 晶圓廠位置
  • 組裝地點

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