Texas Instruments INA181A3QDBVRQ1 Current Sense Amplifier

The INA181A3QDBVRQ1 is a precision current sense amplifier from Texas Instruments, designed to offer industry-leading performance for automotive and industrial applications. This device is part of TI's extensive portfolio of current shunt monitors that provide high-accuracy current measurement solutions.

The INA181A3QDBVRQ1 features a voltage output that makes it easy to interface with any typical analog-to-digital converter (ADC) or microcontroller. With a common-mode voltage range from -0.2V to +26V, this amplifier is suitable for a variety of systems, including those that experience common-mode voltage swings due to supply fluctuations or inductive load transients.

This device offers a fixed gain of 20V/V, which helps simplify circuit design by eliminating the need for external gain-setting resistors. The INA181A3QDBVRQ1 is optimized for low-side current sensing applications, but it can also be used in high-side applications with additional circuitry.

The INA181A3QDBVRQ1 is characterized for operation over the extended industrial temperature range of -40°C to +125°C, making it reliable in harsh environmental conditions. It comes in a small, space-saving SOT-23 package, which is ideal for space-constrained applications.

Key features of the INA181A3QDBVRQ1 include:

• Automotive-grade product, AEC-Q100 qualified
• Zero-drift architecture for high accuracy and low offset
• Wide common-mode voltage range: -0.2V to +26V
• Fixed gain of 20V/V
• Low input bias current
• Supply voltage range from 2.7V to 5.5V
• EMI/RFI filtered inputs for robustness in electrically noisy environments

The INA181A3QDBVRQ1 is the perfect choice for automotive battery monitoring, motor control, power management, and overcurrent protection applications. Its high level of integration and performance makes it an essential component for precise current measurement tasks in both automotive and industrial markets.