INA240A3DR

Current sense amplifiers, also called current shunt monitors, are specialized differential amplifiers with a precisely matched resistive gain network. Designed to monitor the current flow by measuring the voltage drop across a sense element, typically a shunt resistor. Tend to be easier to use, more precise and less prone to noise. Support currents from 10s of μA to 100s of A. Natively support common - mode voltages from -16 to +80 V and with additional circuitry up to 100s of volts.

Key features

• Designed to monitor the current flow by measuring the voltage drop across a sense element, typically a shunt resistor
• Tend to be easier to use, more precise and less prone to noise
• Support currents from 10s of μA to 100s of A
• Natively support common - mode voltages from -16 to +80 V and with additional circuitry up to 100s of volts
• Real - time overcurrent protection
• Current and power monitoring for system optimization
• Current measurement for closed - loop feedback
• Integrates the amplifier along with all the gain - setting resistors which enables small and unified temperature drift
• Integrates the full analog signal processing and provides a voltage or current output
• Integrates the full signal conditioning path and utilizes a standard 2 - wire digital interface
• Provides a simple ALERT signal when the load current exceeds a threshold
• Offers a low - drift, precision integrated sense element
• Able to detect load short to ground
• Current is monitored directly from the source
• High immunity to ground disturbance
• Integrated gain resistors provide excellent matching to enable a higher performing and more stable platform
• Reduction in board space requirements
• High dynamic changes in the common - mode voltage are difficult to achieve with standard op amps
• Unique input architecture allows for the common - mode voltage to greatly exceed the device supply voltage
• Simple to implement and low - cost solution
• Wide range of available options
• True differential measurement across the shunt resistor
• Lower VOFFSET saves system power by enabling the use of smaller value shunt resistors to achieve the same error level