INA280
- 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)
- Gain:
- 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
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.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | INA280 2.7-V to 120-V, 1.1-MHz, High Precision Current Sense Amplifier datasheet | PDF | HTML | 2020. 10. 15 | |
| 애플리케이션 노트 | Using a PCB Copper Trace as a Current Sense Shunt Resistor (Rev. A) | PDF | HTML | 2026. 4. 27 | ||
| 애플리케이션 노트 | Risks and Prevention of ESD, EOS, and Latch Up Events for Current Sense Amplifiers | PDF | HTML | 2024. 11. 18 | ||
| Application brief | Leak Detection, Flow, and Pressure Monitoring in Liquid-Cooled Server Cards and Coolant Distribution Units | PDF | HTML | 2024. 10. 9 | ||
| Application brief | Current Sensing in an H-Bridge (Rev. D) | PDF | HTML | 2023. 4. 7 | ||
| Application brief | High-Side Switch Open-Load Detection in ON-State | PDF | HTML | 2022. 7. 5 | ||
| Application brief | Safety and Protection for Discrete Digital Outputs in a PLC System Using Current (Rev. B) | PDF | HTML | 2022. 3. 10 | ||
| Application brief | High-Side Motor Current Monitoring for Over-Current Protection (Rev. B) | PDF | HTML | 2021. 2. 23 |