INA180B3QDBVRQ1

Overview

The INA180B3QDBVRQ1 is a single-channel, low-side and high-side current sense amplifier from Texas Instruments, designed for automotive applications under AEC-Q100 qualification. It operates within a supply voltage range of 2.7 V to 5.5 V and supports a common-mode voltage span from -200 mV to 26 V. The device features a fixed gain of 100 V/V, a gain bandwidth product of 150 kHz, and a maximum input bias current of 80 uA. Key performance metrics include a common-mode rejection ratio of 100 dB, an input offset voltage of 100 uV, and a gain error of 0.1%. It functions reliably across an operating temperature range of -40°C to +125°C and is housed in a compact SOT-23-5 package.

Feature Summary

• Supports both low-side and high-side current sensing configurations with a wide common-mode voltage range extending to negative values.
• Provides precise measurement capabilities through a fixed gain of 100 V/V and a high common-mode rejection ratio of 100 dB.
• Optimized for low power consumption with a typical operating supply current of 260 uA.
• Engineered for robust automotive environments with extended temperature operation up to +125°C.

Applications

• Automotive battery monitoring systems
• Motor control current feedback loops
• High-side load switching protection circuits

Procurement Notes

Verify the specific suffix QDBVRQ1 against the official Texas Instruments datasheet to confirm AEC-Q100 automotive grade status and the fixed 100 V/V gain setting. Ensure the ordering part number matches the required SOT-23-5 package and that the component meets the specified -40°C to +125°C operating temperature range for your target application environment.

Selection Notes

Select this component when a fixed gain of 100 V/V is required for accurate current measurement in automotive systems. It is suitable for designs needing a wide common-mode voltage range down to -200 mV while maintaining low quiescent current. Consider the SOT-23-5 package constraints for PCB layout and thermal management requirements within the specified industrial temperature limits.

Part Context

This device belongs to the INA180 family of current sense amplifiers, which are characterized by their ability to operate in both high-side and low-side configurations. The 'Q1' designation indicates compliance with AEC-Q100 standards for automotive reliability. The B3 sub-series specifies the precision grade and fixed gain configuration, distinguishing it from other variants in the family with different gain settings or accuracy levels.

Replacement Considerations

INA180A3QDBVRQ1

FAQ

What is the fixed voltage gain of the INA180B3QDBVRQ1?

The INA180B3QDBVRQ1 has a fixed internal gain of 100 V/V.

Does this amplifier support negative common-mode voltages?

Yes, the device supports a common-mode voltage range starting from -200 mV, allowing for low-side sensing applications.