首頁 放大器 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
首頁
放大器
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

INA254

現行

具有 PWM 抑制和分流電阻器的 80-V、雙向 ±75-A 零漂移電流感測放大器

立即訂購
產品規格表

INA254

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 Input offset (±) (max) (µV) 62.5, 62500 Gain error (%) 0.5 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) 2.4 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 Input offset (±) (max) (µV) 62.5, 62500 Gain error (%) 0.5 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) 2.4 Features Bidirectional, Enhanced PWM Rejection, Integrated Shunt, Low-side Capable Rating Catalog Operating temperature range (°C) -40 to 125
HTSSOP (PWA) 24 62.08 mm² 9.7 x 6.4
  • Precision integrated 400-µΩ shunt resistor
    • Continuous ±75 A at 25°C
    • Continuous ±50 A from –40°C to +85°C
    • Shunt resistor tolerance: 0.5% (maximum)
    • Low drift: 10 ppm/°C (0°C to 125°C)
    • Low inductance: 2 nH
  • High accuracy
    • System gain error: 0.5% (maximum)
    • System gain drift: 45 ppm/°C (maximum)
    • Input offset current: ±62.5 mA (maximum)
    • Input offset drift: 625 µA/°C (maximum)
    • DC CMRR > 120-dB
    • 90-dB AC CMRR at 50 kHz
  • Enhanced PWM rejection
  • Wide common-mode range: –4 V to +80 V
  • Available gains: 20 mV/A, 40 mV/A, and 75 mV/A
  • Precision integrated 400-µΩ shunt resistor
    • Continuous ±75 A at 25°C
    • Continuous ±50 A from –40°C to +85°C
    • Shunt resistor tolerance: 0.5% (maximum)
    • Low drift: 10 ppm/°C (0°C to 125°C)
    • Low inductance: 2 nH
  • High accuracy
    • System gain error: 0.5% (maximum)
    • System gain drift: 45 ppm/°C (maximum)
    • Input offset current: ±62.5 mA (maximum)
    • Input offset drift: 625 µA/°C (maximum)
    • DC CMRR > 120-dB
    • 90-dB AC CMRR at 50 kHz
  • Enhanced PWM rejection
  • Wide common-mode range: –4 V to +80 V
  • Available gains: 20 mV/A, 40 mV/A, and 75 mV/A

The INA254 is a voltage-output, current sense amplifier with a 400-µΩ integrated shunt resistor. The INA254 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: 20 mV/A, 40 mV/A, and 75 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 ±45 ppm/°C (maximum), and an optimized Kelvin layout for the sensing resistor.

The INA254 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 2.4 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 24-pin HTSSOP package.

The INA254 is a voltage-output, current sense amplifier with a 400-µΩ integrated shunt resistor. The INA254 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: 20 mV/A, 40 mV/A, and 75 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 ±45 ppm/°C (maximum), and an optimized Kelvin layout for the sensing resistor.

The INA254 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 2.4 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 24-pin HTSSOP package.
filter 尋找其它 配備整合式分流電阻器的類比電流感測放大器
下載 觀看有字幕稿的影片 影片

技術文件

star =TI 所選的此產品重要文件
找不到結果。請清除您的搜尋條件，然後再試一次。
檢視所有 15
重要文件 類型 標題 格式選項 日期
* Data sheet INA254 80-V, High-Voltage, ±75-A Integrated Precision Shunt, Bidirectional, Zero-Drift Current-Shunt Monitor datasheet (Rev. A) PDF | HTML 2023年 3月 30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
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
Technical article A key to accurate system thermal management: monitoring both current flow and temp PDF | HTML 2018年 10月 4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
Technical article Why should you care about overcurrent protection in your system? PDF | HTML 2016年 6月 16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

INA254EVM — 適用於 80-V、雙向、零飄移電流感測放大器的 INA254 評估模組

INA254EVM 包含一個印刷電路板 (PCB)，並可選擇裁切三個獨立 PCB。每個 PCB 斷路器都包含 INA254Ax 裝置 (電路板 1 至 3 的 Ax 為 A1、A2 和 A3) 及外部硬體連線的測試點。
使用指南: PDF | HTML
TI.com 無法提供
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 (...)

支援產品和硬體

支援產品和硬體
啟動 下載
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 (...)
要求
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
View Options
封裝 針腳 CAD 符號、佔位空間與 3D 模型
HTSSOP (PWA) 24 Ultra Librarian
適用 TI 的評估品項標準條款與條件。

訂購與品質

內含資訊：
  • RoHS
  • REACH
  • 產品標記
  • 鉛塗層/球物料
  • MSL 等級/回焊峰值
  • MTBF/FIT 估算值
  • 材料內容
  • 認證摘要
  • 進行中的可靠性監測
內含資訊：
  • 晶圓廠位置
  • 組裝地點

支援與培訓

內含 TI 工程師技術支援的 TI E2E™ 論壇

以英文檢視所有論壇主題

內容係由 TI 和社群貢獻者依「現狀」提供，且不構成 TI 規範。檢視使用條款。

若有關於品質、封裝或訂購 TI 產品的問題，請參閱 TI 支援。​​​​​​​​​​​​​​

影片