INA180A3IDBVR

Overview

The INA180A3IDBVR is a single-channel current sense amplifier from Texas Instruments, housed in a SOT-23-5 package. It features a fixed gain of 100 V/V and supports bidirectional current sensing for both low-side and high-side monitoring applications. The device operates within a supply voltage range of 2.7 V to 5.5 V and handles common-mode voltages from -200 mV to 26 V. Key electrical specifications include a gain bandwidth product of 150 kHz, a maximum input offset voltage of 100 µV, and an input bias current of 80 µA. It delivers a typical CMRR of 100 dB with a gain error of 0.1% and draws 260 µA of quiescent current per channel.

Feature Summary

• Supports bidirectional current sensing for accurate measurement in both directions
• Enables high-side and low-side monitoring with wide common-mode voltage range
• Provides precision amplification with low input offset voltage and high CMRR

Applications

• Battery management systems requiring precise current monitoring
• Industrial process control loops for load cell and sensor signal conditioning
• Power supply output current limiting and protection circuits

Procurement Notes

Verify the specific suffix IDBVR corresponds to the SOT-23-5 surface-mount package and reel packaging configuration. Confirm that the A3 grade meets the required gain accuracy and offset voltage tolerances for your design. Ensure compatibility with the intended operating temperature range of -40°C to +125°C. Cross-reference the datasheet revision to confirm pinout and electrical characteristics match your schematic requirements before finalizing procurement.

Selection Notes

Select this component when a fixed gain of 100 V/V is required for current sensing applications. It is suitable for designs needing bidirectional capability and operation up to 26 V common-mode voltage. Consider this part for space-constrained PCB layouts due to its compact SOT-23-5 footprint. Evaluate the 150 kHz bandwidth against the switching frequency of the monitored circuit to ensure adequate response time without excessive noise susceptibility.

Part Context

This device belongs to the INA180 family of current sense amplifiers designed for cost-effective, high-bandwidth solutions. It shares architectural similarities with other members like the INA180A2 and INA180A4, differing primarily in fixed gain settings. The series is characterized by low power consumption and robust performance in industrial environments, offering a balance between precision and simplicity for general-purpose current monitoring tasks.

Replacement Considerations

INA180A2IDBVR offers a gain of 50 V/V. INA180A4IDBVR provides a gain of 200 V/V. Both share the same package and electrical characteristics except for gain.