Current Sense Amplifier 1 Circuit 8-SOIC
The INA240A1D is a precision current-sense amplifier manufactured by Texas Instruments, specifically designed for high-side and low-side current measurement applications in electrically noisy environments. The device features enhanced PWM rejection capability, enabling accurate current sensing in motor control systems, switching power supplies, solenoid drivers, and other fast-switching power electronics applications.
The amplifier is optimized for measuring voltage drops across shunt resistors while maintaining high common-mode voltage tolerance and excellent signal accuracy. Its bidirectional current-sensing capability allows monitoring of charging and discharging currents in battery systems and power management circuits. The INA240A1D provides fixed gain amplification and high common-mode transient immunity, making it suitable for industrial automation, automotive electronics, embedded power systems, and precision current monitoring applications.
The device combines low offset voltage, low drift characteristics, and robust analog performance within a compact surface-mount package, simplifying precision current measurement implementation in modern electronic systems.
Engineering Specification
Device Type
Current-sense amplifier
Amplifier Configuration
Precision bidirectional current-shunt monitor
Input Characteristics
High common-mode voltage sensing capability
Gain Configuration
Fixed-gain current measurement amplifier
Measurement Topology
High-side and low-side current sensing support
Signal Performance
High accuracy with low offset voltage and low drift
PWM Rejection
Enhanced PWM rejection for switching power applications
Common-Mode Performance
High common-mode transient immunity
Output Characteristics
Analog voltage output proportional to sensed current
Power Consumption
Low-power precision analog operation
Package Type
SOIC surface-mount package
Mounting Style
Surface mount technology
Protection and Reliability
Designed for robust operation in electrically noisy environments
Applications
Motor control systems
Battery management systems
Switching power supplies
Industrial automation
Current monitoring
Solenoid control
Power inverters
Embedded power electronics
Automotive current sensing
Load measurement systems
Manufacturer
Texas Instruments