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INA290 Datasheet(PDF) 1 Page - Texas Instruments |
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INA290 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 27 page ![]() ADC IN+ IN± OUT V BUS + ± Buffer Current Feedback V S GND RL R1 R1 Bias Load R SENSE I SENSE Product Folder Order Now Technical Documents Tools & Software Support & Community An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. INA290 SBOS961 – JUNE 2020 INA290 2.7-V to 120-V, 1.1-MHz, Ultra-Precise Current-Sense Amplifier in Small (SC-70) Package 1 1 Features 1 • Wide common-mode voltage: – Operational voltage: 2.7 V to 120 V – Survival voltage: −20 V to +122 V • Excellent CMRR: – 160-dB DC – 85-dB AC at 50 kHz • Accuracy – Gain: – Gain error: ±0.1% (maximum) – Gain drift: ±5 ppm/°C (maximum) – Offset: – Offset voltage: ±12 µV (maximum) – Offset drift: ±0.2 µV/°C (maximum) • Available gains: – INA290A1: 20 V/V – INA290A2: 50 V/V – INA290A3: 100 V/V – INA290A4: 200 V/V – INA290A5: 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 INA290 is an ultra-precise 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 ultra-precise current measurement accuracy is achieved thanks to the combination of an ultra-low offset voltage of ±12 µV (maximum), a small gain error of ±0.1% (maximum), and a high DC CMRR of 160 dB (typical). The INA290 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 MHz (at gain of 20 V/V) and a 85-dB AC CMRR (at 50 kHz). The INA290 operates from a single 2.7-V to 20-V supply and draws a 370-µA supply current (typical). The INA290 is available with five gain options: 20 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V. The low offset of the zero-drift architecture enables current sensing with low ohmic shunts as specified over the extended operating temperature range ( −40 °C to +125 °C). Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) INA290 SC-70 (5) 2.00 mm × 1.25 mm (1) For all available packages, see the package option addendum at the end of the data sheet. Typical Application |
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