INA180B4QDBVRQ1

Overview

The INA180B4QDBVRQ1 is a single-channel current sense amplifier from Texas Instruments, certified to AEC-Q100 standards for automotive applications. It operates within a supply voltage range of 2.7 V to 5.5 V and supports common-mode voltages from -200 mV to 26 V. The device features a fixed gain of 200 V/V, a gain bandwidth product of 105 kHz, and a slew rate of 2 V/µs. Key electrical specifications include a maximum input offset voltage of 100 µV, a common-mode rejection ratio of 100 dB, and a typical operating supply current of 260 µA. It is housed in an SOT-23-5 package and functions as both a low-side and high-side current sense amplifier.

Feature Summary

• Supports bidirectional current sensing with a wide common-mode voltage range extending to negative values.
• Provides high precision through low input offset voltage and high common-mode rejection ratio.
• Optimized for low power consumption with minimal operating supply current requirements.

Applications

• Automotive battery management systems
• High-side and low-side current monitoring circuits
• Load switch control applications

Procurement Notes

Verify the specific suffix 'B4' confirms the fixed gain of 200 V/V, as other suffixes in the INA180 family indicate different gains. Ensure the component meets AEC-Q100 Grade 1 requirements if operating at the upper temperature limit. Confirm the SOT-23-5 package marking aligns with the manufacturer's latest production change notices to avoid counterfeit or obsolete stock issues during assembly.

Selection Notes

Select this part when a fixed gain of 200 V/V is required for precise current measurement in automotive environments. It is suitable for designs needing operation up to 26 V common-mode voltage while maintaining low power consumption. Consider the 105 kHz bandwidth for applications requiring moderate response speeds without the higher noise or cost associated with wider bandwidth amplifiers.

Part Context

This component belongs to the INA180-Q1 series of current sense amplifiers designed for automotive use. It shares the same pinout and general architecture with variants like the INA180A4QDBVRQ1 but differs in gain settings. The series is engineered to provide accurate current monitoring in harsh automotive electrical environments with strict reliability standards.

Replacement Considerations

INA180A4QDBVRQ1 offers identical functionality with the same 200 V/V gain and package. INA180B1QDBVRQ1 is a direct substitute only if the application can accommodate a gain of 20 V/V instead of 200 V/V.