INA180A1IDBVT

Overview

The INA180A1IDBVT is a unidirectional current sense amplifier manufactured by Texas Instruments. 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 bandwidth of 350 kHz, and a maximum quiescent current of 260 µA. Key electrical specifications include an input offset voltage of 100 µV, a common-mode rejection ratio of 100 dB, and an input bias current of 80 µA. It is housed in a SOT-23-5 package.

Feature Summary

• Supports bidirectional or unidirectional high-side and low-side current sensing with rail-to-rail output capability
• Provides high accuracy through low input offset voltage and high common-mode rejection ratio
• Enables compact system designs via small footprint surface-mount packaging

Applications

• Battery management systems
• Power supply load monitoring
• Overcurrent protection circuits

Procurement Notes

Verify the specific suffix 'A1' confirms the fixed gain of 200 V/V, as other suffixes indicate different gains. Ensure the 'I' designation matches the required industrial temperature range of -40°C to +125°C. Confirm the 'DBVT' suffix corresponds to the SOT-23-5 package type. Cross-reference the manufacturer part number against official datasheets to validate pinout compatibility before integration into the design.

Selection Notes

Select this component when a fixed high gain of 200 V/V is required for detecting small voltage drops across shunt resistors. It is suitable for applications requiring operation up to 26 V common-mode voltage. Consider alternatives if bidirectional sensing is needed, as this variant is typically unidirectional. Evaluate the 350 kHz bandwidth against the switching frequency of the target power stage to ensure adequate signal fidelity.

Part Context

This device belongs to the INA180 family of current sense amplifiers designed for precision measurement. It complements other variants like the INA180A2 and INA180A4 which offer different fixed gains. The family shares similar architectural features but varies in gain settings and automotive qualification status. It serves as a cost-effective solution for general-purpose current monitoring in industrial and consumer electronics.

Replacement Considerations

INA180A2IDBVT offers a gain of 50 V/V. INA180A4IDBVT provides a gain of 200 V/V with identical package and electrical characteristics. For automotive applications, consider the AEC-Q100 qualified INA180A1QDBVRQ1.