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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
Our company has been producing reliable 1550nm CATV Waterproof Outdoor EDFA Optical Amplifier (WE-1550-YZ-YW) for many years, and we welcome new and old customers to visit us. In the application of the industry, we have accumulated rich experience, professional customer service team is familiar with the needs of the industry, product consultants provide you with professional and patient product selection service. Our idea is to seek development in innovation and breakthrough in challenge.
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