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類比電流感測放大器

INA293-Q1

現行

AEC-Q100、-4-V 至 110-V、1.3-MHz、超精確電流感應放大器

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產品規格表

INA293-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) 110 Common-mode voltage (min) (V) -4 Input offset (±) (max) (µV) 20, 30, 50, 80, 150 Input offset drift (±) (typ) (µV/°C) 0.025 Features Low-side Capable, Ultra precise Rating Automotive Voltage gain (V/V) 20, 50, 100, 200, 500 CMRR (min) (dB) 140 Bandwidth (kHz) 900, 1000, 1300 Iq (max) (mA) 2.25 Number of channels 1 Comparators (#) 0 Gain error (%) 0.15 Gain error drift (±) (max) (ppm/°C) 10 Slew rate (V/µs) 2.5 TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125
Product type Analog output Common-mode voltage (max) (V) 110 Common-mode voltage (min) (V) -4 Input offset (±) (max) (µV) 20, 30, 50, 80, 150 Input offset drift (±) (typ) (µV/°C) 0.025 Features Low-side Capable, Ultra precise Rating Automotive Voltage gain (V/V) 20, 50, 100, 200, 500 CMRR (min) (dB) 140 Bandwidth (kHz) 900, 1000, 1300 Iq (max) (mA) 2.25 Number of channels 1 Comparators (#) 0 Gain error (%) 0.15 Gain error drift (±) (max) (ppm/°C) 10 Slew rate (V/µs) 2.5 TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125
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:
    • Operational voltage: −4 V to +110 V
    • Survival voltage: −20 V to +120 V
  • Excellent CMRR:
    • 160-dB DC-CMRR
    • 85-dB AC-CMRR at 50 kHz
  • Accuracy:
    • Gain:
      • Gain error: ±0.15% (maximum)
      • Gain drift: ±10 ppm/ °C (maximum)
    • Offset:
      • Offset voltage: ±15 µV (typical)
      • Offset drift: ±0.05 µV/ °C (typical)
  • Available gains:
    • INA293A1 -Q1, INA293B1 -Q1 : 20 V/V
    • INA293A2 -Q1, INA293B2 -Q1 : 50 V/V
    • INA293A3 -Q1, INA293B3 -Q1 : 100 V/V
    • INA293A4 -Q1, INA293B4 -Q1 : 200 V/V
    • INA293A5 -Q1, INA293B5 -Q1 : 500 V/V
  • High bandwidth: 1.3 MHz
  • Slew rate: 2.5 V/µs
  • Quiescent current: 1.5 mA
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40 °C to +125 °C, TA
  • Functional Safety-Capable
  • Wide common-mode voltage:
    • Operational voltage: −4 V to +110 V
    • Survival voltage: −20 V to +120 V
  • Excellent CMRR:
    • 160-dB DC-CMRR
    • 85-dB AC-CMRR at 50 kHz
  • Accuracy:
    • Gain:
      • Gain error: ±0.15% (maximum)
      • Gain drift: ±10 ppm/ °C (maximum)
    • Offset:
      • Offset voltage: ±15 µV (typical)
      • Offset drift: ±0.05 µV/ °C (typical)
  • Available gains:
    • INA293A1 -Q1, INA293B1 -Q1 : 20 V/V
    • INA293A2 -Q1, INA293B2 -Q1 : 50 V/V
    • INA293A3 -Q1, INA293B3 -Q1 : 100 V/V
    • INA293A4 -Q1, INA293B4 -Q1 : 200 V/V
    • INA293A5 -Q1, INA293B5 -Q1 : 500 V/V
  • High bandwidth: 1.3 MHz
  • Slew rate: 2.5 V/µs
  • Quiescent current: 1.5 mA

The INA293-Q1 is a ultra-precise current sense amplifier that can measure voltage drops across shunt resistors over a wide common-mode range from –4 V to 110 V. The negative common-mode voltage allows the device to operate below ground, thus accommodating precise measurement of recirculating currents in half-bridge applications. The combination of a low offset voltage, small gain error and high DC CMRR enables highly accurate current measurement. The INA293-Q1 is not only designed for DC current measurement, but also for high-speed applications (ex. Fast over-current protection) with a high bandwidth of 1.3 MHz and an 85-dB AC CMRR (at 50 kHz).

The INA293-Q1 operates from a single 2.7-V to 20-V supply, drawing 1.5 mA of supply current. The INA293-Q1 is available with five gain options: 20 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V. These gain options address wide dynamic range current-sensing applications.

The INA293-Q1 is specified over an operating temperature range of −40 °C to +125 °C and is offered in a space-saving SOT-23 package with two pin-out variants.

The INA293-Q1 is a ultra-precise current sense amplifier that can measure voltage drops across shunt resistors over a wide common-mode range from –4 V to 110 V. The negative common-mode voltage allows the device to operate below ground, thus accommodating precise measurement of recirculating currents in half-bridge applications. The combination of a low offset voltage, small gain error and high DC CMRR enables highly accurate current measurement. The INA293-Q1 is not only designed for DC current measurement, but also for high-speed applications (ex. Fast over-current protection) with a high bandwidth of 1.3 MHz and an 85-dB AC CMRR (at 50 kHz).

The INA293-Q1 operates from a single 2.7-V to 20-V supply, drawing 1.5 mA of supply current. The INA293-Q1 is available with five gain options: 20 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V. These gain options address wide dynamic range current-sensing applications.

The INA293-Q1 is specified over an operating temperature range of −40 °C to +125 °C and is offered in a space-saving SOT-23 package with two pin-out variants.
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技術文件

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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 INA293-Q1, AEC-Q100, –4 V to 110 V, 1.3-MHz, Ultra-Precise Current Sense Amplifier datasheet (Rev. C) PDF | HTML 2022/8/10
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
Application brief Current Sensing in an H-Bridge (Rev. D) PDF | HTML 2023/4/7
Application brief High-Side Drive, High-Side Solenoid Monitor With PWM Rejection (Rev. D) PDF | HTML 2022/8/15
Application brief High-Side Motor Current Monitoring for Over-Current Protection (Rev. B) PDF | HTML 2021/2/23
功能安全資訊 INA293-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA (Rev. A) PDF | HTML 2020/11/5
Application brief Difference Between an Instrumentation Amplifier and a Current Sense Amplifier 2020/4/3
應用說明 Evaluating Current Sensing Amplifiers in Body Control Modules Using Simulation 2019/12/16
Application brief Benefits of Intergated Low Inductive Shunt for PWM Applications 2017/6/17
Application brief Precision LED Brightness and Color Mixing With Discrete Current Sense Amplifiers 2017/2/28
類比設計期刊 Low-cost current-shunt monitor IC revives moving-coil meter design 2006/4/18

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

INA293EVM — INA293 -4-V 至 110-V、1.3-MHz、高精密度電流感測放大器評估模組

這是一個小型模組，具有 10 個完全獨立的電路板，可由使用者拆開。INA293 五種增益變體和兩種針腳配置變體的 10 個相同架構電路板，具有高達 110V 共模輸入與和 5A (板載分流) 輸入功能。各電路板都會提供 VS、GND、OUT，以及 VIN+ 和 VIN- 的端子區塊測試點。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
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模擬型號

INA293 PSPICE MODEL (Rev. A)

SBOMAZ5A.ZIP (590 KB) - PSpice 模型
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模擬型號

INA293 TINA-TI REFERENCE DESIGN (Rev. A)

SBOMAZ3A.TSC (612 KB) - TINA-TI 參考設計
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模擬型號

INA293 TINA-TI SPICE MODEL (Rev. A)

SBOMAZ2A.ZIP (43 KB) - TINA-TI Spice 模型
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模擬型號

INA293A1 PSpice Model

SBOMBG6.ZIP (36 KB) - PSpice 模型
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模擬型號

INA293A2 PSpice Model

SBOMBG7.ZIP (25 KB) - PSpice 模型
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模擬型號

INA293A3 PSpice Model

SBOMBG8.ZIP (25 KB) - PSpice 模型
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模擬型號

INA293A4 PSpice Model

SBOMBG9.ZIP (25 KB) - PSpice 模型
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模擬型號

INA293A5 PSpice Model

SBOMBH0.ZIP (26 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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SOT-23 (DBV) 5 Ultra Librarian
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