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INA186-Q1

現行

具有 picoamp 輸入偏壓和啟用功能的 AEC-Q100、40-V、雙向、高精密電流感測放大器

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產品規格表

INA186-Q1

現行
產品規格表 立即訂購

產品詳細資料

Product type Analog output Common-mode voltage (max) (V) 40 Common-mode voltage (min) (V) -0.2 Input offset (±) (max) (µV) 50 Input offset drift (±) (typ) (µV/°C) 0.05 Features Bidirectional, High precision, Low-side Capable Rating Automotive Voltage gain (V/V) 25, 50, 100, 200, 500 CMRR (min) (dB) 120 Bandwidth (kHz) 27, 33, 35, 37, 45 Iq (max) (mA) 0.09 Number of channels 1 Comparators (#) 0 Gain error (%) 1 Gain error drift (±) (max) (ppm/°C) 10 Slew rate (V/µs) 0.3 TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125
Product type Analog output Common-mode voltage (max) (V) 40 Common-mode voltage (min) (V) -0.2 Input offset (±) (max) (µV) 50 Input offset drift (±) (typ) (µV/°C) 0.05 Features Bidirectional, High precision, Low-side Capable Rating Automotive Voltage gain (V/V) 25, 50, 100, 200, 500 CMRR (min) (dB) 120 Bandwidth (kHz) 27, 33, 35, 37, 45 Iq (max) (mA) 0.09 Number of channels 1 Comparators (#) 0 Gain error (%) 1 Gain error drift (±) (max) (ppm/°C) 10 Slew rate (V/µs) 0.3 TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125
SOT-SC70 (DCK) 6 4.2 mm² (2 mm × 2.1 mm) SOT-23-THN (DDF) 8 8.12 mm² (2.9 mm × 2.8 mm) SOT-23 (DBV) 5 8.12 mm² (2.9 mm × 2.8 mm)
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • Wide common-mode voltage range, VCM: –0.2 V to +40 V with survivability up to 42 V (recommended for automotive 12-V battery applications)
  • Low input bias currents, IIB: 500 pA (typical)
  • Low power:
    • Low supply voltage, VS: 1.7 V to 5.5 V
    • Low quiescent current, IQ: 48 µA (typical)
  • Accuracy:
    • Common-mode rejection ratio: 120 dB (minimum)
    • Gain error, EG: ±1% (maximum)
    • Gain drift: 10 ppm/°C (maximum)
    • Offset voltage, VOS: ±50 µV (maximum)
    • Offset drift: 0.5 µV/°C (maximum)
  • Bidirectional current sensing capability
  • Gain options:
    • INA186A1-Q1: 25 V/V
    • INA186A2-Q1: 50 V/V
    • INA186A3-Q1: 100 V/V
    • INA186A4-Q1: 200 V/V
    • INA186A5-Q1: 500 V/V
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • Wide common-mode voltage range, VCM: –0.2 V to +40 V with survivability up to 42 V (recommended for automotive 12-V battery applications)
  • Low input bias currents, IIB: 500 pA (typical)
  • Low power:
    • Low supply voltage, VS: 1.7 V to 5.5 V
    • Low quiescent current, IQ: 48 µA (typical)
  • Accuracy:
    • Common-mode rejection ratio: 120 dB (minimum)
    • Gain error, EG: ±1% (maximum)
    • Gain drift: 10 ppm/°C (maximum)
    • Offset voltage, VOS: ±50 µV (maximum)
    • Offset drift: 0.5 µV/°C (maximum)
  • Bidirectional current sensing capability
  • Gain options:
    • INA186A1-Q1: 25 V/V
    • INA186A2-Q1: 50 V/V
    • INA186A3-Q1: 100 V/V
    • INA186A4-Q1: 200 V/V
    • INA186A5-Q1: 500 V/V

The INA186-Q1 is an automotive, low-power, voltage-output, current-sense amplifier (also called a current-shunt monitor). This device is commonly used for monitoring systems directly connected to an automotive 12-V battery. The INA186-Q1 can sense drops across shunts at common-mode voltages from –0.2 V to +40 V, independent of the supply voltage. In addition, the input pins have an absolute maximum voltage of 42V.

The low input bias current of the INA186-Q1 permits the use of larger current-sense resistors, thus providing accurate current measurements in the microamp range. The low offset voltage of the zero-drift architecture extends the dynamic range of the current measurement. This feature allows for smaller sense resistors with lower power loss, while still providing accurate current measurements.

The INA186-Q1 operates from a single 1.7-V to 5.5-V power supply, and draws a maximum of 90 µA of supply current . Five fixed gain options are available: 25 V/V, 50 V/V, 100 V/V, 200 V/V, or 500 V/V. The device is specified over the operating temperature range of –40°C to +125°C, and offered in SC70, SOT-23 (5), and SOT-23 (8) packages. The SC70 and SOT-23 (DDF) packages supports bidirectional current measurement, whereas the SOT-23 (DBV) only supports current measurement in one direction.

The INA186-Q1 is an automotive, low-power, voltage-output, current-sense amplifier (also called a current-shunt monitor). This device is commonly used for monitoring systems directly connected to an automotive 12-V battery. The INA186-Q1 can sense drops across shunts at common-mode voltages from –0.2 V to +40 V, independent of the supply voltage. In addition, the input pins have an absolute maximum voltage of 42V.

The low input bias current of the INA186-Q1 permits the use of larger current-sense resistors, thus providing accurate current measurements in the microamp range. The low offset voltage of the zero-drift architecture extends the dynamic range of the current measurement. This feature allows for smaller sense resistors with lower power loss, while still providing accurate current measurements.

The INA186-Q1 operates from a single 1.7-V to 5.5-V power supply, and draws a maximum of 90 µA of supply current . Five fixed gain options are available: 25 V/V, 50 V/V, 100 V/V, 200 V/V, or 500 V/V. The device is specified over the operating temperature range of –40°C to +125°C, and offered in SC70, SOT-23 (5), and SOT-23 (8) packages. The SC70 and SOT-23 (DDF) packages supports bidirectional current measurement, whereas the SOT-23 (DBV) only supports current measurement in one direction.
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INA190-Q1 現行 具 picoamp IB 和啓用功能的 AEC-Q100、40V、雙向、超精密電流感測放大器 The INA190-Q1 is functionally identical with increased accuracy

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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 INA186-Q1 AEC-Q100, 40-V, Bidirectional, High-Precision Current Sense Amplifier With picoamp IB and ENABLE datasheet (Rev. B) PDF | HTML 2022/3/28
應用說明 Using a PCB Copper Trace as a Current Sense Shunt Resistor (Rev. A) PDF | HTML 2026/4/27
應用說明 Risks and Prevention of ESD, EOS, and Latch Up Events for Current Sense Amplifiers PDF | HTML 2024/11/18
Circuit design Low (microamp), high-side, current-sensing circuit with current-sensing amp (Rev. A) PDF | HTML 2024/9/25
Application brief Precision Current Measurements on High-Voltage Power-Supply Rails (Rev. F) PDF | HTML 2022/10/17
功能安全資訊 INA186-Q1 Functional Safety FIT Rate, FMD and Pin FMA (Rev. A) PDF | HTML 2022/4/5
Application brief 12-V Battery Monitoring in an Automotive Module (Rev. A) PDF | HTML 2022/3/10
Circuit design Low-Drift, Low-Side, Bidirectional Current Sensing Circuit (Rev. A) PDF | HTML 2020/12/2
技術文章 Dark-current measurement in automotive telematics applications PDF | HTML 2020/3/4
應用說明 Evaluating Current Sensing Amplifiers in Body Control Modules Using Simulation 2019/12/16
Application brief External current sense amps vs integrated onboard amplifiers for current sensing (Rev. B) 2019/2/19

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開發板

INA186EVM — INA186 評估模組

這是一個小型模組，具有 5 個完全獨立的電路板，可由使用者拆開。五個相同的電路板 (15A 額定值) 可用於五個裝置增益變體。每塊電路板都提供 VS、GND、OUT 和 REF 的測試點。此外、電路板相容於 1206 至 0603 分流電阻器。焊盤和插座可快速實作輸入濾波器 / 保護和輸出濾波。
使用指南: PDF
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模擬型號

INA186 TINA-TI Reference Design (Rev. A)

SBOMAX9A.TSC (192 KB) - TINA-TI 參考設計
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模擬型號

INA186 TINA-TI Spice Model (Rev. A)

SBOMAY0A.ZIP (58 KB) - TINA-TI Spice 模型
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模擬型號

INA186A1 PSpice Model

SBOMBE8.ZIP (29 KB) - PSpice 模型
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模擬型號

INA186A2 PSpice Model

SBOMBA6.ZIP (30 KB) - PSpice 模型
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模擬型號

INA186A3 PSpice Model

SBOMBA7.ZIP (30 KB) - PSpice 模型
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模擬型號

INA186A4 PSpice Model

SBOMBA9.ZIP (30 KB) - PSpice 模型
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模擬型號

INA186A5 PSpice Model

SBOMBD1.ZIP (30 KB) - PSpice 模型
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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 (...)

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計算工具

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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計算工具

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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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。

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封裝 針腳 CAD 符號、佔位空間與 3D 模型
SOT-SC70 (DCK) 6 Ultra Librarian
SOT-23-THN (DDF) 8 Ultra Librarian
SOT-23 (DBV) 5 Ultra Librarian
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