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電流感測放大器
配備整合式分流電阻器的類比電流感測放大器

INA253

現行

具 PWM 抑制和整合式分流電阻器的 80V、雙向、精密電流感測放大器

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產品規格表

INA253

現行
產品規格表 立即訂購

產品詳細資料

Common-mode voltage (max) (V) 80 Common-mode voltage (min) (V) -4 Gain error (%) 0.4 Gain error drift (±) (max) (ppm/°C) 45 CMRR (min) (dB) 120 Bandwidth (kHz) 350 Supply voltage (max) (V) 5.5 Supply voltage (min) (V) 2.7 Iq (max) (mA) 2.6 Features Bidirectional, Enhanced PWM Rejection, Integrated Shunt, Low-side Capable Rating Catalog Operating temperature range (°C) -40 to 125
Common-mode voltage (max) (V) 80 Common-mode voltage (min) (V) -4 Gain error (%) 0.4 Gain error drift (±) (max) (ppm/°C) 45 CMRR (min) (dB) 120 Bandwidth (kHz) 350 Supply voltage (max) (V) 5.5 Supply voltage (min) (V) 2.7 Iq (max) (mA) 2.6 Features Bidirectional, Enhanced PWM Rejection, Integrated Shunt, Low-side Capable Rating Catalog Operating temperature range (°C) -40 to 125
TSSOP (PW) 20 41.6 mm² 6.5 x 6.4
  • Precision Integrated Shunt Resistor
    • Shunt Resistor: 2 mΩ
    • Shunt Inductance: 3 nH
    • Shunt Resistor Tolerance: 0.1% (Max)
    • ±15 A Continuous from –40°C to +85°C
    • 0°C to 125°C Temperature Coefficient:
      10 ppm/°C
  • High Bandwidth: 350 kHz
  • Enhanced PWM rejection
  • Excellent CMRR
    • > 120-dB DC CMRR
    • 90-dB AC CMRR at 50 kHz
  • Accuracy:
    • Gain:
      • Gain Error: 0.4% (Max)
      • Gain Drift: 45 ppm/°C (Max)
    • Offset:
      • Offset Current: ±15 mA (Max)
      • Offset Drift: 125 µA/°C (Max)
  • Wide Common-Mode Range: –4 V to +80 V
  • Available Gains: 100 mV/A, 200 mV/A,
    and 400 mV/A
  • Quiescent Current: 2.4 mA (Max)
  • Precision Integrated Shunt Resistor
    • Shunt Resistor: 2 mΩ
    • Shunt Inductance: 3 nH
    • Shunt Resistor Tolerance: 0.1% (Max)
    • ±15 A Continuous from –40°C to +85°C
    • 0°C to 125°C Temperature Coefficient:
      10 ppm/°C
  • High Bandwidth: 350 kHz
  • Enhanced PWM rejection
  • Excellent CMRR
    • > 120-dB DC CMRR
    • 90-dB AC CMRR at 50 kHz
  • Accuracy:
    • Gain:
      • Gain Error: 0.4% (Max)
      • Gain Drift: 45 ppm/°C (Max)
    • Offset:
      • Offset Current: ±15 mA (Max)
      • Offset Drift: 125 µA/°C (Max)
  • Wide Common-Mode Range: –4 V to +80 V
  • Available Gains: 100 mV/A, 200 mV/A,
    and 400 mV/A
  • Quiescent Current: 2.4 mA (Max)

The INA253 is a voltage-output, current sense amplifier with an integrated shunt resistor of 2 mΩ. The INA253 is designed to monitor bidirectional currents over a wide common-mode range from
–4 V to +80 V, independent of the supply voltage. Three fixed gains are available: 100 mV/A, 200 mV/A, and 400 mV/A. The integration of the precision resistor with a zero-drift chopped amplifier provides calibration equivalent measurement accuracy, ultra-low temperature drift performance of 15 ppm/°C, and an optimized Kelvin layout for the sensing resistor.

The INA253 is designed with enhanced PWM rejection circuitry to suppress large (dv/dt) signals that enable real-time continuous current measurements. The measurements are critical for in-line current measurements in a motor-drive application, and for solenoid valve control applications.

This device operates from a single 2.7-V to 5.5-V power supply, drawing a maximum of 3 mA of supply current. All gain versions are specified over the extended operating temperature range (–40°C to +125°C), and are available in a 20-pin TSSOP package.

The INA253 is a voltage-output, current sense amplifier with an integrated shunt resistor of 2 mΩ. The INA253 is designed to monitor bidirectional currents over a wide common-mode range from
–4 V to +80 V, independent of the supply voltage. Three fixed gains are available: 100 mV/A, 200 mV/A, and 400 mV/A. The integration of the precision resistor with a zero-drift chopped amplifier provides calibration equivalent measurement accuracy, ultra-low temperature drift performance of 15 ppm/°C, and an optimized Kelvin layout for the sensing resistor.

The INA253 is designed with enhanced PWM rejection circuitry to suppress large (dv/dt) signals that enable real-time continuous current measurements. The measurements are critical for in-line current measurements in a motor-drive application, and for solenoid valve control applications.

This device operates from a single 2.7-V to 5.5-V power supply, drawing a maximum of 3 mA of supply current. All gain versions are specified over the extended operating temperature range (–40°C to +125°C), and are available in a 20-pin TSSOP package.
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重要文件 類型 標題 格式選項 日期
* Data sheet INA253 High Voltage, Bidirectional, Zero-Drift, Current-Shunt Monitor With Integrated, 2-mΩ, Precision, Low Inductive Shunt Resistor datasheet (Rev. A) PDF | HTML 2018年 12月 12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
Application brief Current Sensing in Collaborative and Industrial Robotic Arms (Rev. B) PDF | HTML 2023年 7月 24日
Application brief Current Mode Control in Switching Power Supplies (Rev. E) PDF | HTML 2023年 4月 12日
Application brief Current Sensing in an H-Bridge (Rev. D) PDF | HTML 2023年 4月 7日
Application brief Integrating the Current Sensing Resistor (Rev. D) PDF | HTML 2023年 4月 7日
Application brief Low-Drift, Precision, In-Line Motor Current Measurements With PWM Rejection (Rev. D) PDF | HTML 2023年 4月 7日
Application brief Switching Power Supply Current Measurements (Rev. E) PDF | HTML 2023年 4月 7日
Technical article 4 key current-sensing design trends that are powering electrification PDF | HTML 2023年 2月 21日
Application brief High-Side Drive, High-Side Solenoid Monitor With PWM Rejection (Rev. D) PDF | HTML 2022年 8月 15日
E-book An Engineer's Guide to Current Sensing (Rev. B) 2022年 4月 12日
Selection guide Current Sense Amplifiers (Rev. E) 2021年 9月 20日
Technical article Current-sensing dynamics in automotive solenoids PDF | HTML 2019年 11月 1日
Application brief Low Temperature Drift Integrated Shunt vs Active Temp Compensation of Shunt 2017年 12月 27日
Application brief Integrated-Resistor Current Sensors Simplify PCB Design 2017年 6月 30日
Application brief Benefits of Intergated Low Inductive Shunt for PWM Applications 2017年 6月 17日

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

INA253EVM — 具有簡易測試存取權限的 INA253 電流感測評估模組

INA253EVM 包含一個 PCB，並可選擇裁切三個獨立 PCB。  每個 PCB 斷路器都包含 INA253Ax 裝置（電路板 1 至 3 的 Ax 分別為 A1、A2 和 A3）及外部硬體連線的測試點。
使用指南: PDF
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模擬型號

INA253 TINA-TI Reference Design

SLOM452.TSC (453 KB) - TINA-TI Reference Design
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模擬型號

INA253 TINA-TI Spice Model

SLOM451.ZIP (24 KB) - TINA-TI Spice Model
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模擬型號

INA253A1 PSpice Model

SLOM499.ZIP (23 KB) - PSpice Model
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模擬型號

INA253A2 PSpice Model

SLOM496.ZIP (23 KB) - PSpice Model
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模擬型號

INA253A3 PSpice Model

SLOM492.ZIP (23 KB) - PSpice Model
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計算工具

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

The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)

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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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模擬工具

PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

PSpice® for TI 是有助於評估類比電路功能的設計和模擬環境。這款全功能設計和模擬套件使用 Cadence® 的類比分析引擎。PSpice for TI 包括業界最大的模型庫之一，涵蓋我們的類比和電源產品組合，以及特定類比行為模型，且使用無需支付費用。

PSpice for TI 設計和模擬環境可讓您使用其內建函式庫來模擬複雜的混合訊號設計。在進行佈局和製造之前，建立完整的終端設備設計和解決方案原型，進而縮短上市時間並降低開發成本。 

在 PSpice for TI 設計與模擬工具中，您可以搜尋 TI (...)
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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 (...)
使用指南: PDF
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參考設計

TIDA-010016 — 8 埠 IO-Link 主站參考設計

現在可利用執行八埠 IO-Link 主要裝置的參考設計，實現需要快速時序與快速週期時間的 PLC 應用。此設計可用於建立遠端 IO 閘道，以連接 OPC UA、Profinet、EtherCAT 或乙太網路 IP。以 PRU 為基礎的訊框處理程式可提供非常靈活的時序與時間同步方式。此設計有助於建立非常通用且可擴充的 IO-Link 主要裝置。
Design guide: PDF
電路圖: 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

This high-side current shunt monitor is used to measure the voltage developed across a current-sensing resistor when current passes through it.

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
參考設計

TIDA-020023 — 具有高精確度電流感測器的汽車正比電磁閥驅動參考設計

此參考設計展示如何使用簡單的推挽輸出比較器和高準確度的整合式電流分流監控器，來實現精確的比例電磁閥驅動。在車輛自動變速箱中，精確且準確控制比例電磁閥對於更平順的駕駛性能特別必要。此設計解決影響電磁閥精確定位的兩個主要因素：驅動和電流感測在溫度變化下的準確度。
Design guide: PDF
電路圖: PDF
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