INA180B1QDBVRQ1

Overview

The INA180B1QDBVRQ1 is a single-channel, automotive-grade current sense amplifier manufactured by Texas Instruments. It operates within a supply voltage range of 2.7 V to 5.5 V and supports bidirectional current sensing with a common-mode voltage spanning from -200 mV to 26 V. The device features a fixed gain of 20 V/V, a gain error of 0.1%, and an input offset voltage of 100 µV. Key electrical specifications include a bandwidth of 350 kHz, a power supply current of 260 µA, and a CMRR of 100 dB. It is qualified under AEC-Q100 standards and functions reliably across a temperature range of -40°C to +125°C.

Feature Summary

• Supports both low-side and high-side current sensing configurations
• Provides high common-mode rejection ratio for accurate measurements in noisy environments
• Capable of bidirectional current detection within a wide common-mode voltage range

Applications

• Automotive battery monitoring systems
• Load switch control circuits
• High-side current protection mechanisms

Procurement Notes

Verify the specific grade suffix and package variant against the official datasheet to ensure compatibility with automotive reliability requirements. Confirm that the operating conditions align with the specified common-mode voltage limits and supply voltage ranges before integration into the design.

Selection Notes

Select this component when a fixed gain of 20 V/V is required for precise current measurement applications. It is suitable for designs needing high common-mode voltage tolerance up to 26 V while maintaining low power consumption. Ensure the application benefits from its high CMRR and wide operating temperature range.

Part Context

This part belongs to the INA180-Q1 family of current sense amplifiers designed for automotive electronics. It shares the same functional architecture as other variants in the series but differs in gain settings and accuracy grades. The Q1 designation indicates compliance with automotive quality and reliability standards set by the Automotive Electronics Council.

Replacement Considerations

INA180A1QDBVRQ1 offers a different gain setting. INA180B2QDBVRQ1 provides a higher gain option. Verify pinout compatibility and electrical parameter alignment before substitution.