7Semi INA240A2 4~80V Bidirectional Current Sense Amplifier Breakout, 50V/V Gain

The 7Semi INA240A2 Breakout is a high-precision, bidirectional current-sense amplifier module based on the Texas Instruments INA240A2. Designed for accurate current measurement across a shunt resistor, the module provides a proportional voltage output with excellent noise rejection and stability. With a wide common-mode voltage range from –4V to +80V and a 50V/V gain, it is ideal for motor control, battery systems, DC-DC converters, and other applications requiring robust high-side or low-side current sensing.

Technical Specifications:

• Amplifier IC: INA240A2 (Texas Instruments)
  
• Common-Mode Voltage Range: –4V to +80V
  
• Gain: 50V/V
  
• Supply Voltage: 2.7V to 5.5V
  
• Quiescent Current: ~2.4mA max
  
• Output Type: Analog voltage output proportional to sensed current
  
• Input Type: Voltage drop across external shunt resistor
  
• CMRR (DC): ~132 dB (high noise immunity)
  
• AC CMRR: ~93 dB at 50 kHz (excellent for PWM systems)
  
• Response Time: Fast settling for dynamic, high-speed switching environments
  
• Operating Temperature: –40°C to +125°C (IC rating)
  
• Sensing Configuration: High-side or low-side bidirectional sensing
  
• Board Type: Compact breakout board for easy integration

Features:

• Wide –4V to +80V common-mode voltage tolerance
  
• Bidirectional current sensing for charge/discharge and reverse current monitoring
  
• Accurate amplification of very small shunt voltages
  
• 50V/V fixed gain ideal for precise current measurements
  
• Exceptional PWM and switching noise rejection
  
• Zero-drift architecture ensures long-term stability and low offset
  
• High bandwidth and fast response for dynamic loads
  
• Works in both high-side and low-side configurations
  
• Suitable for microcontroller ADC interfacing
  
• Compact and easy-to-use breakout board design

Applications:

• Battery charging/discharging current monitoring
  
• Motor drivers, BLDC controllers, and servo motor systems
  
• Power supply and DC-DC converter current sensing
  
• Solar charge controllers and renewable energy systems
  
• Overcurrent detection and power diagnostics
  
• Industrial control systems and automation
  
• Robotics and mechatronics current feedback
  
• IoT power monitoring and smart energy systems