INA250A1PWR

The INA250 is a series of voltage-output, current-sensing amplifiers that integrate an internal shunt resistor. It can achieve high-precision current measurement over a common-mode voltage range of 0V to 36V, independent of the supply voltage. This device is a bidirectional, low-side/high-side shunt monitor that can use an external reference to measure the bidirectional current flowing into the internal current-sensing resistor sensor. The integrated precision current-sensing resistor enables the device to achieve calibration-level measurement accuracy and ultra-low temperature drift, and ensures that the Kelvin layout optimized for the sensing resistor can always be implemented. The INA250 series offers four levels of output voltage: 200mV/A, 500mV/A, 800mV/A, and 2V/A. This device has been fully tested and can provide a continuous current of up to 10A at a maximum temperature of 125°C. The INA250 is powered by a single supply voltage of 2.7V to 36V, with a maximum supply current of 300μA. All gain versions of the INA250 are rated for operation within the extended operating temperature range (-40°C to +125°C) and are available in a Thin Shrink Small Outline Package (TSSOP)-16.

Applications

• Test Equipment
• Power Supply
• Server
• Telecommunications Equipment
• Automotive
• Solar Inverter
• Power Management

Key features

• Precision integrated shunt resistor:
• Shunt resistance: 2mΩ
• Shunt resistance tolerance: 0.1% (maximum)
• 15A continuous current (-40°C to 85°C)
• 0°C to 125°C temperature coefficient: 10ppm/°C
• High accuracy:
• Gain error (shunt and amplifier): 0.3% (maximum)
• Offset current: 50mA (maximum, INA250A2)
• Four gain options:
• INA250A1: 200mV/A
• INA250A2: 500mV/A
• INA250A3: 800mV/A
• INA250A4: 2V/A
• Wide common-mode voltage range: -0.1V to 36V
• Specified operating temperature range: -40°C to 125°C