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Description
The INA293-Q1 is a ultra-precise current sense amplifier that can measure voltage drops across shunt resistors over a wide common-mode range from –4 V to 110 V. The negative common-mode voltage allows the device to operate below ground, thus accommodating precise measurement of recirculating currents in half-bridge applications. The combination of a low offset voltage, small gain error and high DC CMRR enables highly accurate current measurement. The INA293-Q1 is not only designed for DC current measurement, but also for high-speed applications (ex. Fast over-current protection) with a high bandwidth of 1.3 MHz and an 85-dB AC CMRR (at 50 kHz).
The INA293-Q1 operates from a single 2.7-V to 20-V supply, drawing 1.5 mA of supply current. The INA293-Q1 is available with five gain options: 20 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V. These gain options address wide dynamic range current-sensing applications.
The INA293-Q1 is specified over an operating temperature range of −40 °C to +125 °C and is offered in a space-saving SOT-23 package with two pin-out variants.
Features
• AEC-Q100 qualified for automotive applications
–Temperature grade 1: –40 °C to +125 °C, TA
• Functional Safety-Capable
– Documentation available to aid functional safety system design
• Wide common-mode voltage:
– Operational voltage: −4 V to +110 V
– Survival voltage: −20 V to +120 V
• Excellent CMRR: – 160-dB DC-CMRR – 85-dB AC-CMRR at 50 kHz
• Accuracy: – Gain:
• Gain error: ±0.15% (maximum)
• Gain drift: ±10 ppm/ °C (maximum) – Offset:
• Offset voltage: ±15 µV (typical)
• Offset drift: ±0.05 µV/ °C (typical)
• Available gains:
– INA293A1-Q1, INA293B1-Q1 : 20 V/V
– INA293A2-Q1, INA293B2-Q1 : 50 V/V
– INA293A3-Q1, INA293B3-Q1 : 100 V/V
– INA293A4-Q1, INA293B4-Q1 : 200 V/V
– INA293A5-Q1, INA293B5-Q1 : 500 V/V
• High bandwidth: 1.3 MHz • Slew rate: 2.5 V/µs
• Quiescent current: 1.5 mA
Applications
• 48-V automotive
• Solenoid control
• 48-V DC/DC converter
• Valve control
In the continuous communication with users, we constantly optimize the humanized design, function and overall design of our Best Qualty D418 1800W Four Channels High Power 1u Amplifier. With scientific management methods and strong technical force, the company will continue to deepen reforms and innovate mechanisms. We attract and unite talents with career and affection, and strive to create a good culture of respecting knowledge and talents.
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