INA290A3QDCKRQ1

The INA290-Q1 is an ultra-precision current-sensing amplifier that can measure the voltage drop across a shunt resistor within a wide common-mode range of 2.7V to 120V. It comes in a space-saving SC-70 package, with a PCB footprint of only 2.0mm×2.1mm. Thanks to the combination of features such as 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 device can achieve ultra-high precision in current measurement. With a high bandwidth of 1.1MHz (at a gain of 20V/V) and an AC CMRR of 85dB (at 50kHz), the INA290-Q1 is suitable not only for DC current measurement but also for high-speed applications (e.g., fast overcurrent protection). By detecting the voltage drop across the shunt resistor within a wide common-mode range of 2.7V to 120V, the INA290-Q1 can provide the function of ultra-precision current measurement. The INA290-Q1 uses an SC-70 package, which can minimize the size of the solution.

Applications

• Solid-state LiDAR
• Automotive HVAC compressor modules
• Automotive interior heater modules
• Automotive parking heater modules
• Automotive pumps

Key features

• AEC-Q100 qualified for automotive applications: Temperature Grade 1: -40°C to +125°C, TA; functional safety documentation available to support functional safety system design
• Wide common-mode voltage: operating voltage 2.7V to 120V, withstand voltage -20V to +122V
• Excellent CMRR: 160dB DC, 85dB AC (at 50kHz)
• Accuracy: gain error ±0.1% (max), gain drift ±5ppm/°C (max); offset voltage ±12μV (max), offset drift ±0.2μV/°C (max)
• Available gains: 20V/V (A1), 50V/V (A2), 100V/V (A3), 200V/V (A4), 500V/V (A5)
• High bandwidth: 1.1MHz
• Slew rate: 2V/µs
• Quiescent current: 370μA