Description
7Semi INA240A1 4~80V Bidirectional Current Sense Amplifier Breakout 20V/V Gain
The 7Semi INA240A1 Breakout is a precision bidirectional current-sense amplifier module based on the INA240A1 from Texas Instruments. It is designed to measure small voltage drops across a shunt resistor and produce a proportional output voltage, supporting both high-side and low-side current sensing. With a common-mode voltage range up to 80 V and a gain of 20 V/V, this module is suitable for power monitoring, battery management, motor control, and other systems requiring accurate current measurement.
Technical Specifications:
The 7Semi INA240A1 Breakout is a precision bidirectional current-sense amplifier module based on the INA240A1 from Texas Instruments. It is designed to measure small voltage drops across a shunt resistor and produce a proportional output voltage, supporting both high-side and low-side current sensing. With a common-mode voltage range up to 80 V and a gain of 20 V/V, this module is suitable for power monitoring, battery management, motor control, and other systems requiring accurate current measurement.
Technical Specifications:
- Amplifier IC: INA240A1 (Texas Instruments)
- Common-Mode Voltage Range: –4 V to +80 V
- Gain: 20 V/V
- Supply Voltage: 2.7 V to 5.5 V
- Quiescent Current: ~ 2.4 mA (max)
- Output: Analog voltage output proportional to sensed current
- Input: Voltage drop across external shunt resistor
- High CMRR (DC) for accurate sensing even under noisy environments
- Good AC common-mode rejection suited for PWM and switching applications
- Operating Temperature: –40 °C to +125 °C (per amplifier IC specification)
- Sensing Configuration: Supports both high-side and low-side shunt detection
- Board Format: Compact breakout board for easy prototyping or integration
Features:
- Wide common-mode voltage tolerance (–4 V to +80 V) - suitable for high-voltage systems
- Bidirectional current sensing - can detect current flow in both directions for charge/discharge or regenerative systems
- 20 V/V gain - amplifies small shunt voltages to readable levels for ADC or MCUs
- Analog output simplifies interfacing with microcontrollers and ADCs
- High CMRR and good noise rejection - reliable in PWM and switching-noise environments
- Zero-drift architecture - stable long-term performance with minimal offset and drift
- Compatible with both high-side and low-side measurement configurations
- Compact breakout form factor - easy to integrate into PCBs, power-monitoring modules, or prototype boards
- Suitable for battery monitoring, power supplies, motor drivers, solar setups, and more
Applications:
- Battery charge/discharge monitoring and management
- Power supply current monitoring and diagnostics
- Motor drive and control systems (DC motors, BLDC, servo)
- Renewable energy systems (solar, wind) for current flow measurement
- Overcurrent protection and power consumption tracking
- Embedded systems and IoT devices requiring current sensing
- Robotics and mechatronics power feedback systems
- Industrial automation and control systems requiring precise current sensing
- DC-DC converter output or input current monitoring
- Electric vehicle battery management or portable power systems