Ultra-Precise Current Sense Amplifier - 500 V/V Gain
This Ultra-Precise Current Sense Amplifier can measure voltage drops across shunt resistors over a wide common-mode range from 2.7V to 120V.
Product Overview
Texas Instruments INA290 Ultra-Precise Current Sense Amplifiers can measure voltage drops across shunt resistors over a wide common-mode range from 2.7V to 120V. It is in a highly space-efficient SC-70 package with a PCB footprint of only 2.0mm × 2.1mm. The ultra-precise current measurement accuracy is achieved thanks to the combination of an ultra-low offset voltage of ±12µV (maximum), a small gain error of ±0.1% (maximum), and a high DC CMRR of 160dB (typical). The INA290 is not only designed for DC current measurement but also high-speed applications (like fast overcurrent protection, for example) with high bandwidth of 1MHz (at a gain of 20V/V) and an 85dB AC CMRR (at 50kHz).
The INA290 operates from a single 2.7V to 20V supply and draws a 370µA supply current (typical).
Features & Specs
- Wide common-mode voltage
- 2.7V to 120V operational voltage
- −20V to +122V survival voltage
- Excellent CMRR
- 160dB DC
- 85dB AC at 50kHz
- Accuracy
- Gain
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- ±0.1% (maximum) gain error
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- ±5ppm/°C (maximum) gain drift
- Offset
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- ±12µV (maximum) offset voltage
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- ±0.2µV/°C (maximum) offset drift
- 1.1MHz high bandwidth
- 2V/µs slew rate
- 370µA quiescent current
Documentation
Customer Reviews
Stock and Customer Discounts
Available Discounts
- $3.75 | 25+ units
- $3.56 | 100+ units