1 Features
• Wide common-mode voltage:
– Operational voltage: 2.7 V to 120 V
– Survival voltage: −20 V to +122 V
• Excellent CMRR:
– 120-dB DC (Minimum)
– 85-dB AC at 50 kHz
• Accuracy
– Gain:
• Gain error: ±0.5% (maximum)
• Gain drift: ±20 ppm/°C (maximum)
– Offset:
• Offset voltage: ±150 μV (maximum)
• Offset drift: ±1 μV/°C (maximum)
• Available gains:
– INA280A1: 20 V/V
– INA280A2: 50 V/V
– INA280A3: 100 V/V
– INA280A4: 200 V/V
– INA280A5: 500 V/V
• High bandwidth: 1.1 MHz
• Slew rate: 2 V/μs
• Quiescent current: 370 μA

2 Applications
• Active antenna system mMIMO (AAS)
• Macro remote radio unit (RRU)
• 48-V rack server
• 48-V merchant network & server power supply
• Test and measurement

3 Description
The INA280 is a current sense amplifier that can
measure voltage drops across shunt resistors over a
wide common-mode range from 2.7 V to 120 V. It is in
a highly space-efficient SC-70 package with a PCB
footprint of only 2.0 mm × 2.1 mm. The current
measurement accuracy is achieved thanks to the
combination of an ultra-low offset voltage of ±150 μV
maximum), a small gain error of ±0.5% (maximum),
and a high DC CMRR of 140 dB (typical). The INA280
is not only designed for DC current measurement, but
also for high-speed applications (like fast overcurrent
protection, for example) with a high bandwidth of 1.1
MHz (at gain of 20 V/V) and an 85-dB AC CMRR (at
50 kHz).
The INA280 operates from a single 2.7-V to 20-V
supply and draws a 370-μA supply current (typical).
The INA280 available with five gain options: 20 V/V,
50 V/V, 100 V/V, 200 V/V, and 500 V/V. The low offset
and drift of the INA280 enables accurate current
sensing over the extended operating temperature
range of −40°C to +125°C.