INA296B-Q1

現行

AEC-Q100 -5V 至 110V 雙向 1.1-MHz 8-V/µs 高精密電流感測放大器

產品詳細資料

Product type Analog output Common-mode voltage (max) (V) 110 Common-mode voltage (min) (V) -5 Input offset (±) (max) (µV) 150 Input offset drift (±) (typ) (µV/°C) 0.5 Features Bidirectional, High precision, Low-side Capable Rating Automotive Voltage gain (V/V) 10, 20, 50, 100, 200 CMRR (min) (dB) 120 Bandwidth (kHz) 1100 Iq (max) (mA) 3.2 Number of channels 1 Comparators (#) 0 Gain error (%) 0.1 Gain error drift (±) (max) (ppm/°C) 5 Slew rate (V/µs) 8 TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 150
Product type Analog output Common-mode voltage (max) (V) 110 Common-mode voltage (min) (V) -5 Input offset (±) (max) (µV) 150 Input offset drift (±) (typ) (µV/°C) 0.5 Features Bidirectional, High precision, Low-side Capable Rating Automotive Voltage gain (V/V) 10, 20, 50, 100, 200 CMRR (min) (dB) 120 Bandwidth (kHz) 1100 Iq (max) (mA) 3.2 Number of channels 1 Comparators (#) 0 Gain error (%) 0.1 Gain error drift (±) (max) (ppm/°C) 5 Slew rate (V/µs) 8 TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 150
SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm) VSSOP (DGK) 8 14.7 mm² (3 mm × 4.9 mm) VSSOP (DGS) 10 14.7 mm² (3 mm × 4.9 mm) SOT-23-THN (DDF) 8 8.12 mm² (2.9 mm × 2.8 mm)
  • AEC-Q100 qualified for automotive applications:
    • Temperature Grade 1: −40°C to 125°C, TA
    • Temperature Grade 0: −40°C to 150°C, TA
  • Functional Safety-Capable
  • Wide common-mode voltage:
    • Operational voltage: −5V to 110V
    • Survival voltage: −20V to 120V
  • Bidirectional operation
  • High small signal bandwidth: 1.1MHz (at all gains)
  • Slew rate: 8V/µs
  • Step response settling time to 1%: 1µs
  • Excellent CMRR: 166dB
  • Accuracy:
    • Gain error (maximum)
      • Version A: ±0.01%, ±1ppm/°C drift
      • Version B: ±0.1%, ±5ppm/°C drift
    • Offset voltage (maximum)
      • Version A: ±10µV, ±0.1µV/°C drift
      • Version B: ±150µV, ±0.5µV/°C drift
  • Available gains:
    • INA296A1-Q1 : 10V/V
    • INA296A2-Q1 : 20V/V
    • INA296A3-Q1 : 50V/V
    • INA296A4-Q1 : 100V/V
    • INA296A5-Q1 : 200V/V
  • Package options: SOT23-8, VSSOP-8, SOIC-8, VSSOP-10
  • AEC-Q100 qualified for automotive applications:
    • Temperature Grade 1: −40°C to 125°C, TA
    • Temperature Grade 0: −40°C to 150°C, TA
  • Functional Safety-Capable
  • Wide common-mode voltage:
    • Operational voltage: −5V to 110V
    • Survival voltage: −20V to 120V
  • Bidirectional operation
  • High small signal bandwidth: 1.1MHz (at all gains)
  • Slew rate: 8V/µs
  • Step response settling time to 1%: 1µs
  • Excellent CMRR: 166dB
  • Accuracy:
    • Gain error (maximum)
      • Version A: ±0.01%, ±1ppm/°C drift
      • Version B: ±0.1%, ±5ppm/°C drift
    • Offset voltage (maximum)
      • Version A: ±10µV, ±0.1µV/°C drift
      • Version B: ±150µV, ±0.5µV/°C drift
  • Available gains:
    • INA296A1-Q1 : 10V/V
    • INA296A2-Q1 : 20V/V
    • INA296A3-Q1 : 50V/V
    • INA296A4-Q1 : 100V/V
    • INA296A5-Q1 : 200V/V
  • Package options: SOT23-8, VSSOP-8, SOIC-8, VSSOP-10

The INA296x-Q1 is an ultra-precise, bidirectional current sense amplifier that can measure voltage drops across shunt resistors over a wide common-mode range from –5V to 110V, independent of the supply voltage. The high-precision current measurement is achieved through a combination of low offset voltage (±10µV, maximum), small gain error (±0.01%, maximum) and a high DC CMRR (typical 166dB). The INA296x-Q1 is not only designed for high voltage, bidirectional DC current measurements, but also for high-speed applications (such as transient detection and fast overcurrent protection) with a high signal bandwidth of 1.1MHz and fast settling time.

The INA296x-Q1 operates from a supply of 2.7V to 20V, drawing 2.5mA of supply current. The INA296x-Q1 is available in five gain options: 10V/V, 20V/V, 50V/V, 100V/V, and 200V/V. Multiple gain options allow for optimization between available shunt resistor values and wide output dynamic range requirements.

The INA296x-Q1Grade 1 is specified over operating temperature range of −40°C to 125°C and Grade 0 over operating temperature range of −40°C to 150°C.

The INA296x-Q1 is an ultra-precise, bidirectional current sense amplifier that can measure voltage drops across shunt resistors over a wide common-mode range from –5V to 110V, independent of the supply voltage. The high-precision current measurement is achieved through a combination of low offset voltage (±10µV, maximum), small gain error (±0.01%, maximum) and a high DC CMRR (typical 166dB). The INA296x-Q1 is not only designed for high voltage, bidirectional DC current measurements, but also for high-speed applications (such as transient detection and fast overcurrent protection) with a high signal bandwidth of 1.1MHz and fast settling time.

The INA296x-Q1 operates from a supply of 2.7V to 20V, drawing 2.5mA of supply current. The INA296x-Q1 is available in five gain options: 10V/V, 20V/V, 50V/V, 100V/V, and 200V/V. Multiple gain options allow for optimization between available shunt resistor values and wide output dynamic range requirements.

The INA296x-Q1Grade 1 is specified over operating temperature range of −40°C to 125°C and Grade 0 over operating temperature range of −40°C to 150°C.

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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 INA296x-Q1 AEC-Q100, –5V to 110V, Bidirectional, 1.1MHz, 8V/μs, Ultra-Precise Current Sense Amplifier datasheet (Rev. D) PDF | HTML 2025/6/9
應用說明 Risks and Prevention of ESD, EOS, and Latch Up Events for Current Sense Amplifiers PDF | HTML 2024/11/18
功能安全資訊 INA241x-Q1 and INA296x-Q1 Functional Safety FIT Rate, FMD and Pin FMA (Rev. A) PDF | HTML 2024/1/29
類比設計期刊 Second-sourcing options for small-package amplifiers 2018/3/26

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

INA296AEVM — 具有 5-V/µs 電壓轉換率且適用於 -5-V 至 110-V 1.1-MHz 電流感測放大器的 INA296x 評估模組

INA296AEVM 是一個小型模組,具有五個完全獨立的電路板,可由設計人員拆開。INA296x 的五個增益變體的每一個,都可以使用五個結構相同的電路板,具有最高 110-V 共模輸入範圍和 10-A (板載分流) 輸入功能。

各電路板都會提供 VS、GND、OUT 和 Vin+ 和 Vin- 的端子區塊的測試點。焊盤和插槽允許快速實作輸入和輸出濾波,以及板載 2512 尺寸的分流電阻器。

使用指南: PDF | HTML
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計算工具

ANALOG-ENGINEER-CALC — PC software analog engineer's calculator

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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-020065 — 智慧保險絲高壓側開關控制器參考設計

此參考設計克服了通常與更換標準熔斷保險絲相關的挑戰。藉由實作 TPS1213-Q1 高壓側開關控制器、INA296B-Q1 電流感測放大器和微控制器,此設計提供了 I2 t 過電流保護、可將功耗降至最低的低功率模式,以及可驅動電阻、電容和電感負載的能力。此設計包含多種配置選項,包括雙向電流感測在內,讓工程師能針對高電流智慧保險絲應用執行各種測試。

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封裝 針腳 CAD 符號、佔位空間與 3D 模型
SOIC (D) 8 Ultra Librarian
VSSOP (DGK) 8 Ultra Librarian
VSSOP (DGS) 10 Ultra Librarian
SOT-23-THN (DDF) 8 Ultra Librarian

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