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INA790B-Q1

現行

具增強 PWM 抑制、通過 AEC-Q100 認證的 110V 75ARMS 高精密電流感測放大器

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產品規格表

INA790B-Q1

現行
產品規格表 立即訂購

產品詳細資料

Common-mode voltage (max) (V) 110 Common-mode voltage (min) (V) -4 Continuous current (max) (A) 75 Input offset (±) (max) (µV) 100 Gain error (%) 0.3 CMRR (min) (dB) 130 Bandwidth (kHz) 1000 Features Analog Gain Set, Bidirectional, Enhanced PWM Rejection Rating Automotive Operating temperature range (°C) -40 to 125
Common-mode voltage (max) (V) 110 Common-mode voltage (min) (V) -4 Continuous current (max) (A) 75 Input offset (±) (max) (µV) 100 Gain error (%) 0.3 CMRR (min) (dB) 130 Bandwidth (kHz) 1000 Features Analog Gain Set, Bidirectional, Enhanced PWM Rejection Rating Automotive Operating temperature range (°C) -40 to 125
— (—) — See data sheet
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: −40°C to +125°C, TA
  • Functional Safety-Capable
  • Precision design with integrated shunt resistor
    • ±75A continuous current at 25°C
    • ±50A continuous current at +125°C
    • Shunt resistor: 400µΩ
    • Shunt inductance: 2nH
  • Wide common-mode voltage range: –4V to +110V
  • Enhanced PWM rejection optimized for systems subject to switching common-mode voltages
    • Supports switching frequencies up to 125kHz
  • Excellent CMRR
    • 160dB DC CMRR
    • 114dB AC CMRR at 50kHz
  • High measurement accuracy
    • System Gain error (maximum)
      • Version A: ±0.35%, ±35ppm/°C drift
      • Version B: ±1%, ±100ppm/°C drift
    • Offset current (maximum)
      • Version A: ±40mA, ±70mA over temperature
      • Version B: ±210mA, ±250mA over temperature
  • Adjustable gain with external resistor divider network: 20mV/A to 400mV/A
  • Open-drain temperature alert at TJ of 160°C
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: −40°C to +125°C, TA
  • Functional Safety-Capable
  • Precision design with integrated shunt resistor
    • ±75A continuous current at 25°C
    • ±50A continuous current at +125°C
    • Shunt resistor: 400µΩ
    • Shunt inductance: 2nH
  • Wide common-mode voltage range: –4V to +110V
  • Enhanced PWM rejection optimized for systems subject to switching common-mode voltages
    • Supports switching frequencies up to 125kHz
  • Excellent CMRR
    • 160dB DC CMRR
    • 114dB AC CMRR at 50kHz
  • High measurement accuracy
    • System Gain error (maximum)
      • Version A: ±0.35%, ±35ppm/°C drift
      • Version B: ±1%, ±100ppm/°C drift
    • Offset current (maximum)
      • Version A: ±40mA, ±70mA over temperature
      • Version B: ±210mA, ±250mA over temperature
  • Adjustable gain with external resistor divider network: 20mV/A to 400mV/A
  • Open-drain temperature alert at TJ of 160°C

The INA790x-Q1 is a voltage output, current sense amplifier with an integrated shunt resistor of 400µΩ. The INA790x-Q1 is designed to monitor bidirectional current over a common-mode range of –4V to 110V, independent of the supply voltage. Adjustable gain option assists in optimizing the system dynamic range. The integration of the Kelvin connected shunt resistor with a zero-drift chopped amplifier provides calibration equivalent measurement accuracy, ultra-low temperature drift performance of ±35ppm/°C, and an optimized layout for the sensing resistor.

The INA790x-Q1 is designed with enhanced PWM rejection circuitry to suppress disturbance from large (dv/dt) common-mode transients and enable real-time continuous current measurements in switching systems. The continuous measurements are critical for inline current measurements in a motor-drive application, and for solenoid valve control application.

This device operates from a single 2.7V to 5.5V power supply, drawing a maximum of 4.25mA of supply current. All versions are specified over the extended operating temperature range (–40°C to +125°C), and are available in a 15-pin wettable flank VQFN package.

The INA790x-Q1 is a voltage output, current sense amplifier with an integrated shunt resistor of 400µΩ. The INA790x-Q1 is designed to monitor bidirectional current over a common-mode range of –4V to 110V, independent of the supply voltage. Adjustable gain option assists in optimizing the system dynamic range. The integration of the Kelvin connected shunt resistor with a zero-drift chopped amplifier provides calibration equivalent measurement accuracy, ultra-low temperature drift performance of ±35ppm/°C, and an optimized layout for the sensing resistor.

The INA790x-Q1 is designed with enhanced PWM rejection circuitry to suppress disturbance from large (dv/dt) common-mode transients and enable real-time continuous current measurements in switching systems. The continuous measurements are critical for inline current measurements in a motor-drive application, and for solenoid valve control application.

This device operates from a single 2.7V to 5.5V power supply, drawing a maximum of 4.25mA of supply current. All versions are specified over the extended operating temperature range (–40°C to +125°C), and are available in a 15-pin wettable flank VQFN package.
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* 資料表 INA790x-Q1 AEC-Q100, –4V to 110V, Bidirectional, Ultra-Precise, Current Sense Amplifier With Enhanced PWM Rejection and 75A EZShunt Technology datasheet PDF | HTML 2026/1/30

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INA79XXEVM — INA79xx 評估模組

INA79xx 評估模組 (EVM) 具有 INA790x -4V 至 110V、雙向、超精密、電流感測放大器，並採用 75A EZShunt™ 技術。INA79x 也具備增強 PWM 抑制。EVM 提供的平台有助於進行增益及參考電壓配置。

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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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