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INA168

現行

2.7 至 60V、800kHz 可變增益電流感測放大器

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產品規格表

INA168

現行
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產品詳細資料

Product type Analog output Common-mode voltage (max) (V) 60 Common-mode voltage (min) (V) 2.7 Input offset (±) (max) (µV) 1000 Input offset drift (±) (typ) (µV/°C) 1 Features Current Output Rating Catalog Voltage gain (V/V) adjustable CMRR (min) (dB) 100 Bandwidth (kHz) 32 Iq (max) (mA) 0.06 Number of channels 1 Comparators (#) 0 Gain error (%) 2 Gain error drift (±) (max) (ppm/°C) 100 Operating temperature range (°C) -40 to 125
Product type Analog output Common-mode voltage (max) (V) 60 Common-mode voltage (min) (V) 2.7 Input offset (±) (max) (µV) 1000 Input offset drift (±) (typ) (µV/°C) 1 Features Current Output Rating Catalog Voltage gain (V/V) adjustable CMRR (min) (dB) 100 Bandwidth (kHz) 32 Iq (max) (mA) 0.06 Number of channels 1 Comparators (#) 0 Gain error (%) 2 Gain error drift (±) (max) (ppm/°C) 100 Operating temperature range (°C) -40 to 125
SOT-23 (DBV) 5 8.12 mm² (2.9 mm × 2.8 mm)
  • Complete Unipolar High-Side Current Measurement Circuit
  • Wide Supply and Common-Mode Range
  • INA138: 2.7 V to 36 V
  • INA168: 2.7 V to 60 V
  • Independent Supply and Input Common-Mode Voltages
  • Single Resistor Gain Set
  • Low Quiescent Current (25 µA Typical)
  • Wide Temperature Range: –40°C to +125°C
  • 5-Pin SOT-23 Package
  • Complete Unipolar High-Side Current Measurement Circuit
  • Wide Supply and Common-Mode Range
  • INA138: 2.7 V to 36 V
  • INA168: 2.7 V to 60 V
  • Independent Supply and Input Common-Mode Voltages
  • Single Resistor Gain Set
  • Low Quiescent Current (25 µA Typical)
  • Wide Temperature Range: –40°C to +125°C
  • 5-Pin SOT-23 Package

The INA138 and INA168 (INA1x8) are high-side, unipolar, current shunt monitors. Wide input common-mode voltage range, low quiescent current, and tiny SOT-23 packaging enable use in a variety of applications.

Input common-mode and power-supply voltages are independent and can range from 2.7 V to 36 V for the INA138 and 2.7 V to 60 V for the INA168. Quiescent current is only 25 µA, which permits connecting the power supply to either side of the current measurement shunt with minimal error.

The device converts a differential input voltage to a current output. This current is converted back to a voltage with an external load resistor that sets any gain from 1 to over 100. Although designed for current shunt measurement, the circuit invites creative applications in measurement and level shifting.

Both the INA138 and INA168 are available in SOT23-5 and are specified for the –40°C to 125°C temperature range.

 

The INA138 and INA168 (INA1x8) are high-side, unipolar, current shunt monitors. Wide input common-mode voltage range, low quiescent current, and tiny SOT-23 packaging enable use in a variety of applications.

Input common-mode and power-supply voltages are independent and can range from 2.7 V to 36 V for the INA138 and 2.7 V to 60 V for the INA168. Quiescent current is only 25 µA, which permits connecting the power supply to either side of the current measurement shunt with minimal error.

The device converts a differential input voltage to a current output. This current is converted back to a voltage with an external load resistor that sets any gain from 1 to over 100. Although designed for current shunt measurement, the circuit invites creative applications in measurement and level shifting.

Both the INA138 and INA168 are available in SOT23-5 and are specified for the –40°C to 125°C temperature range.

 
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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 INA1x8 High-Side Measurement Current Shunt Monitor datasheet (Rev. E) PDF | HTML 2017/12/20
應用說明 Using a PCB Copper Trace as a Current Sense Shunt Resistor (Rev. A) PDF | HTML 2026/4/27
Circuit design High-voltage, high-side floating current sensing circuit using current output, c (Rev. A) PDF | HTML 2024/9/26
電子書 An Engineer's Guide to Current Sensing (Rev. B) 2022/4/12
應用說明 Extending the Common-Mode Voltage Range of Current-Output Current Shunt Monitors (Rev. A) PDF | HTML 2022/3/21
Application brief Extending Beyond the Max Common-Mode Range of Discrete Current-Sense Amplifiers (Rev. A) PDF | HTML 2022/3/10
Application brief Safety and Protection for Discrete Digital Outputs in a PLC System Using Current (Rev. B) PDF | HTML 2022/3/10
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 Q4 2008 Issue Analog Applications Journal 2008/10/22
使用指南 UCC38C42 30-W Synchronous Buck Converter Reference Design 2003/2/4

設計與開發

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模擬型號

INA168 PSpice Model (Rev. A)

SBOC030A.ZIP (55 KB) - PSpice 模型
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模擬型號

INA168 TINA-TI Reference Design (Rev. B)

SBOC161B.TSC (81 KB) - TINA-TI 參考設計
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模擬型號

INA168 TINA-TI Spice Model (Rev. A)

SBOM222A.ZIP (3 KB) - TINA-TI Spice 模型
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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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設計工具

CIRCUIT060032 — 使用電流輸出、電流感測放大器的高電壓、高壓側浮動電流感測電路

本手冊旨在示範為具有高共模電壓的系統設計準確電流感測解決方案的方法。此設計的主要特點是使用單向電路來監控 Vcm = 400V 的系統，方法是在供應匯流排 (VCM) 上跨接一個稽納二極體來浮動裝置供電。本手冊以 TIDA-00332 高電壓 12 V – 400 V DC 電流感測參考設計為基礎。
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封裝 針腳 CAD 符號、佔位空間與 3D 模型
SOT-23 (DBV) 5 Ultra Librarian
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