INA280A2IDCKR

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.

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

Key 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