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INA750B
  • INA750B
  • INA750B

INA750B

ACTIVE

110V, 35A integrated-shunt high-precision current-sense amplifier with enhanced PWM rejection

Texas Instruments INA750B Product Info

1 April 2026 0

Parameters

Common-mode voltage (max) (V)

110

Common-mode voltage (min) (V)

-4

Continuous current (max) (A)

35

Input offset (±) (max) (µV)

150

Gain error (%)

0.1

CMRR (min) (dB)

130

Bandwidth (kHz)

1000

Supply voltage (max) (V)

5.5V

Supply voltage (min) (V)

2.7

Features

Analog Gain Set, Enhanced PWM Rejection

Rating

Catalog

Operating temperature range (°C)

-40 to 125

Package

VQFN (REM)-14-20 mm² 5 x 4

Features

  • Precision design with integrated shunt resistor
    • ±35A continuous current at 25°C
    • ±25A continuous current from at 125°C
    • Shunt resistor: 800µΩ
    • Shunt inductance: 2.5nH
  • 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: ±0.4%, ±40ppm/°C drift
      • Version B: ±1%, ±100ppm/°C drift
    • Offset current (maximum)
      • Version A: ±20mA, ±35mA over temperature
      • Version B: ±105mA, ±125mA over temperature
  • Adjustable gain with external resistor divider network: 40mV/A to 800mV/A
  • Open-drain temperature alert at TJ of 160°C
  • Precision design with integrated shunt resistor
    • ±35A continuous current at 25°C
    • ±25A continuous current from at 125°C
    • Shunt resistor: 800µΩ
    • Shunt inductance: 2.5nH
  • 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: ±0.4%, ±40ppm/°C drift
      • Version B: ±1%, ±100ppm/°C drift
    • Offset current (maximum)
      • Version A: ±20mA, ±35mA over temperature
      • Version B: ±105mA, ±125mA over temperature
  • Adjustable gain with external resistor divider network: 40mV/A to 800mV/A
  • Open-drain temperature alert at TJ of 160°C

Description

The INA750x is a voltage output, current sense amplifier with an integrated shunt resistor of 800µΩ. The INA750x 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 ±40ppm/°C, and an optimized layout for the sensing resistor.

The INA750x is designed with enhanced PWM rejection circuitry to suppress disturbances 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 applications

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 14-pin VQFN package.

The INA750x is a voltage output, current sense amplifier with an integrated shunt resistor of 800µΩ. The INA750x 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 ±40ppm/°C, and an optimized layout for the sensing resistor.

The INA750x is designed with enhanced PWM rejection circuitry to suppress disturbances 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 applications

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 14-pin VQFN package.

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