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INA190-EP

現行

具有 picoamp IB 和啟用功能的增強型產品、40-V、雙向、超精密電流感應放大器

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INA190-EP

現行
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產品詳細資料

Product type Analog output Common-mode voltage (max) (V) 40 Common-mode voltage (min) (V) -0.2 Input offset (±) (max) (µV) 15 Input offset drift (±) (typ) (µV/°C) 0.01 Features Bidirectional, Low-side Capable, Ultra precise Rating HiRel Enhanced Product Voltage gain (V/V) 25, 50, 100, 200, 500 CMRR (min) (dB) 132 Bandwidth (kHz) 27, 32, 33, 35, 37, 45 Supply voltage (max) (V) 5.5 Supply voltage (min) (V) 1.7 Iq (max) (mA) 0.09 Number of channels 1 Comparators (#) 0 Gain error (%) 0.2, 0.3, 0.4 Gain error drift (±) (max) (ppm/°C) 7 Slew rate (V/µs) 0.3 TI functional safety category Functional Safety-Capable Operating temperature range (°C) -55 to 150
Product type Analog output Common-mode voltage (max) (V) 40 Common-mode voltage (min) (V) -0.2 Input offset (±) (max) (µV) 15 Input offset drift (±) (typ) (µV/°C) 0.01 Features Bidirectional, Low-side Capable, Ultra precise Rating HiRel Enhanced Product Voltage gain (V/V) 25, 50, 100, 200, 500 CMRR (min) (dB) 132 Bandwidth (kHz) 27, 32, 33, 35, 37, 45 Supply voltage (max) (V) 5.5 Supply voltage (min) (V) 1.7 Iq (max) (mA) 0.09 Number of channels 1 Comparators (#) 0 Gain error (%) 0.2, 0.3, 0.4 Gain error drift (±) (max) (ppm/°C) 7 Slew rate (V/µs) 0.3 TI functional safety category Functional Safety-Capable Operating temperature range (°C) -55 to 150
SOT-23-THN (DDF) 8 8.12 mm² 2.9 x 2.8
  • Supports Defense, Aerospace, and Medical Applications:
    • Temperature range: –55°C to +150°C, TA
    • Controlled Baseline
    • One Assembly/Test Site
    • One Fabrication Site
    • Extended Product Life Cycle
    • Extended Product-Change Notification
    • Product Traceability
  • Low input bias currents: 500 pA (typical) (enables microamp current measurement)
  • Low power:
    • Low supply voltage, VS: 1.7 V to 5.5 V
    • Low quiescent current: 50 µA at 25°C (typical)
  • Accuracy:
    • Common-mode rejection ratio: 132 dB (minimum)
    • Gain error: ±0.2% (A1 device)
    • Gain drift: 7 ppm/°C (maximum)
    • Offset voltage, VOS: ±15 µV (maximum)
    • Offset drift: 80 nV/°C (maximum)
  • Wide common-mode voltage: –0.2 V to +40 V
  • Bidirectional current sensing capability
  • Gain options:
    • INA190A1-EP: 25 V/V
    • INA190A2-EP: 50 V/V
    • INA190A3-EP: 100 V/V
    • INA190A4-EP: 200 V/V
    • INA190A5-EP: 500 V/V
  • Supports Defense, Aerospace, and Medical Applications:
    • Temperature range: –55°C to +150°C, TA
    • Controlled Baseline
    • One Assembly/Test Site
    • One Fabrication Site
    • Extended Product Life Cycle
    • Extended Product-Change Notification
    • Product Traceability
  • Low input bias currents: 500 pA (typical) (enables microamp current measurement)
  • Low power:
    • Low supply voltage, VS: 1.7 V to 5.5 V
    • Low quiescent current: 50 µA at 25°C (typical)
  • Accuracy:
    • Common-mode rejection ratio: 132 dB (minimum)
    • Gain error: ±0.2% (A1 device)
    • Gain drift: 7 ppm/°C (maximum)
    • Offset voltage, VOS: ±15 µV (maximum)
    • Offset drift: 80 nV/°C (maximum)
  • Wide common-mode voltage: –0.2 V to +40 V
  • Bidirectional current sensing capability
  • Gain options:
    • INA190A1-EP: 25 V/V
    • INA190A2-EP: 50 V/V
    • INA190A3-EP: 100 V/V
    • INA190A4-EP: 200 V/V
    • INA190A5-EP: 500 V/V

The INA190-EP is a low-power, voltage-output, current-shunt monitor (also called a current-sense amplifier). This device is commonly used for overcurrent protection, precision current measurement for system optimization, or in closed-loop feedback circuits. The INA190-EP can sense drops across shunts at common-mode voltages from –0.2 V to +40 V, independent of the supply voltage.

The low input bias current of the device permits the use of larger current-sense resistors, thus providing accurate current measurements in the microamp range. The low offset voltage of the zero-drift architecture extends the dynamic range of the current measurement. This feature allows for smaller sense resistors with lower power loss, while still providing accurate current measurements.

The INA190-EP operates from a single 1.7-V to 5.5-V power supply, and draws a maximum of 65 µA of supply current when enabled; only 0.1 µA when disabled. Five fixed gain options are available: 25 V/V, 50 V/V, 100 V/V, 200 V/V, or 500 V/V. The device is specified over the operating temperature range of –55°C to +150°C, and offered in the SOT-23 package.

The INA190-EP is a low-power, voltage-output, current-shunt monitor (also called a current-sense amplifier). This device is commonly used for overcurrent protection, precision current measurement for system optimization, or in closed-loop feedback circuits. The INA190-EP can sense drops across shunts at common-mode voltages from –0.2 V to +40 V, independent of the supply voltage.

The low input bias current of the device permits the use of larger current-sense resistors, thus providing accurate current measurements in the microamp range. The low offset voltage of the zero-drift architecture extends the dynamic range of the current measurement. This feature allows for smaller sense resistors with lower power loss, while still providing accurate current measurements.

The INA190-EP operates from a single 1.7-V to 5.5-V power supply, and draws a maximum of 65 µA of supply current when enabled; only 0.1 µA when disabled. Five fixed gain options are available: 25 V/V, 50 V/V, 100 V/V, 200 V/V, or 500 V/V. The device is specified over the operating temperature range of –55°C to +150°C, and offered in the SOT-23 package.
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重要文件 類型 標題 格式選項 日期
* Data sheet INA190-EP Bidirectional, Low-Power, Zero-Drift, Wide Dynamic Range, Precision Current Sense Amp With Enable datasheet PDF | HTML 2022年 5月 25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
Certificate INA190EPEVM EU RoHS Declaration of Conformity (DoC) 2022年 2月 15日

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開發板

INA190EPEVM — 適用於電流感測且具有低電流佈局的 INA190-EP 評估模組

這是一個小型模組，具有六個完全獨立的電路板，可由使用者拆開。五個相同的電路板可用於五個裝置增益變體。第六塊具有特殊防護佈局的電路板 (10-A 額定值) 可用於特別低電流量測系統。各電路板皆提供 VS、GND、OUT 和 REF 的測試點，能夠在整個擴展溫度範圍內評估 INA190-EP。

使用指南: PDF | HTML
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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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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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CIRCUIT060037 — 精密過電流閂鎖電路

這個高壓側電流感測解決方案採用電流感測放大器、含整合式參考的比較器以及 P 通道 MOSFET，以建立過電流閂鎖電路。當偵測到負載電流大於 200 mA 時，電路會中斷系統與電源的連接。比較器輸出將閂鎖 (將 P 通道 MOSFET 的閘極電壓保持在 0 V)，直到電路的電源開始循環，因為比較器會驅動 P 通道 MOSFET 的閘極，並將訊號傳送回電流感測放大器的參考針腳。
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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。 

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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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