The INA281A1QDBVRQ1 is a precision current-sense amplifier from Texas Instruments, designed to provide high-accuracy monitoring of current flow in various applications. This automotive-grade device is part of TI's family of voltage output current shunt monitors which can measure voltage drops across shunts at common-mode voltages from –0.3 V to 26 V, independent of the supply voltage.

This particular model comes in a compact SOT-23 package, making it suitable for space-constrained applications. With an extended temperature range of –40°C to +125°C, the INA281A1QDBVRQ1 is ideal for automotive and industrial environments where robust performance is required.

Key Features:

• High Accuracy: The INA281A1QDBVRQ1 offers a gain error of just 0.1% (max) and a gain drift of 10 ppm/°C (max), ensuring precise current measurement across the entire operating temperature range.
• Wide Common-Mode Range: Capable of handling common-mode voltages from –0.3 V to 26 V, it provides designers with the flexibility to work in various circuit configurations.
• Low Offset Voltage: A low input offset voltage of only 35 µV (max) allows for accurate low-side current measurements without significant error introduced by the amplifier itself.
• High Bandwidth: With a bandwidth of up to 850 kHz, the INA281A1QDBVRQ1 is well-suited for fast current-sensing applications that require quick response times.
• Quiescent Current: The device operates with a low quiescent current of 450 µA (typical), which is beneficial for power-sensitive systems.

Applications:

The INA281A1QDBVRQ1 is designed to be versatile and can be used in a wide range of applications. It is especially well-suited for automotive applications such as motor control, battery management, and overcurrent protection. Additionally, it's applicable in power management for industrial systems, telecommunications equipment, and consumer electronics where precise current monitoring is critical.

Quality and Reliability:

As a Q1 device, the INA281A1QDBVRQ1 meets the stringent quality standards required for use in automotive applications. It is AEC-Q100 qualified, ensuring reliability and performance under extreme conditions. Texas Instruments' commitment to quality makes this current-sense amplifier a trusted choice for engineers and designers looking for a reliable solution for their current-sensing needs.