INA240A1 Bidirectional Current Sense Amplifier, SO-8
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Prices updated: 12 Oct 2026
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About this product
The INA240A1 is a bidirectional current-sense amplifier that measures the voltage drop across a shunt resistor. It has enhanced PWM rejection and a wide common-mode range from -4 V to 80 V, suited to motor drives and solenoid control. It comes in an SO-8 package.
Specifications
- Common-mode voltage range
- -4 V to 80 V / -4 فولت إلى 80 فولت
- Current direction
- Bidirectional / ثنائي الاتجاه
- Output type
- Voltage output / خرج جهد
- PWM rejection
- Enhanced / محسّن
- Gain
- 20 V/V (A1 variant) / 20 V/V (النسخة A1)
- Package
- SO-8 / SO-8
Frequently asked questions
How do I wire it to measure current?
Connect the two inputs across the shunt resistor, supply the device and ground, and read the output voltage with an ADC or a meter. Current is the output voltage divided by the gain and shunt value.
Does the supply voltage limit the measurement range?
No. The listing states the common-mode range is independent of the supply voltage, so the device can sense across shunts at voltages from -4 V to 80 V.
