INA180A3QDBVRQ1

Overview

The INA180A3QDBVRQ1 is a single-channel current sense amplifier from the Texas Instruments INA180 series, designed for automotive applications with AEC-Q100 qualification. It operates on a supply voltage ranging from 2.7 V to 5.5 V and supports a common-mode voltage range of -200 mV to 26 V. The device features a fixed gain of 100 V/V, a gain bandwidth product of 150 kHz, and a typical input offset voltage of 100 µV. Key electrical specifications include a maximum power supply current of 260 µA, an input bias current of 80 µA, and a common-mode rejection ratio of 100 dB. It is housed in a SOT-23-5 package and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Supports both low-side and high-side current sensing configurations
• Provides rail-to-rail output capability for full dynamic range
• Delivers high precision with low input offset voltage and low noise density

Applications

• Automotive battery management systems
• Motor control circuits
• Power supply monitoring

Procurement Notes

Verify the specific suffix 'A3' confirms the fixed gain of 100 V/V, as other suffixes indicate different gains. Ensure the 'Q1' designation matches the required AEC-Q100 automotive reliability standards. Confirm the DBVR package type corresponds to the SOT-23-5 footprint required for the design. Check that the operating temperature range meets the specific environmental constraints of the target application.

Selection Notes

Select this component when a fixed gain of 100 V/V is required for precise current measurement in automotive environments. The wide common-mode voltage range allows flexibility in circuit topology relative to ground potential. Consider the low quiescent current for battery-powered applications where energy efficiency is critical. Verify that the 150 kHz bandwidth is sufficient for the signal frequencies present in the system.

Part Context

This part belongs to the INA180-Q1 family of current sense amplifiers, which are engineered for high-precision measurements in demanding automotive conditions. The family shares similar architectural features but varies in gain settings and specific performance optimizations. The INA180 series is distinct from higher-voltage or bidirectional counterparts like the INA186, focusing on unidirectional sensing up to 26 V common-mode voltages.

Replacement Considerations

INA180B3QDBVRQ1 offers identical functionality with potentially tighter initial accuracy specifications. INA180A1QDBVRQ1 provides a gain of 10 V/V instead of 100 V/V. INA180A2QDBVRQ1 provides a gain of 50 V/V. Direct pin-compatible substitutes require matching the gain setting and automotive qualification status.