INA180B2IDBVR

Overview

The INA180B2IDBVR is a single-channel current sense amplifier from Texas Instruments, housed in a SOT-23-5 package. It operates on a single supply voltage ranging from 2.7 V to 5.5 V with a maximum quiescent current of 260 µA. The device features a fixed gain of 50 V/V and supports a common-mode voltage range from -200 mV to 26 V. Key electrical specifications include a gain bandwidth product of 210 kHz, a common-mode rejection ratio (CMRR) of 100 dB, an input offset voltage of 100 µV, and an input bias current of 80 µA. It functions within an extended temperature range of -40°C to +125°C.

Feature Summary

• Supports low-side and high-side current sensing with a wide common-mode voltage range extending below ground.
• Integrates a precision matched resistor network to minimize gain error and temperature drift.
• Provides high accuracy with low input offset voltage and high common-mode rejection ratio.

Applications

• Motor control systems
• Battery monitoring circuits
• Power management units
• Overcurrent protection detection

Procurement Notes

Verify the specific suffix 'B2' confirms the fixed gain of 50 V/V for this part number. Confirm the 'I' designation indicates industrial temperature rating (-40°C to +125°C). Ensure the 'DBVR' suffix matches the required SOT-23-5 surface-mount package and reel packaging format. Cross-reference the manufacturer datasheet for pinout compatibility and absolute maximum ratings before integration.

Selection Notes

Select this component when a fixed gain of 50 V/V is required for precise current measurement. It is suitable for applications needing operation up to 26 V common-mode voltage. Consider this part for designs constrained by the small SOT-23-5 footprint. Evaluate if the 210 kHz bandwidth meets the dynamic response requirements of the target circuit.

Part Context

This device belongs to the INA180 series of cost-optimized current sense amplifiers. The series offers multiple fixed gain options (20, 50, 100, and 200 V/V) to simplify design. The INA180 family is designed for general-purpose current sensing in industrial and consumer electronics, providing a balance of performance and compact size.

Replacement Considerations

INA180A2IDBVR: Commercial grade version with identical electrical characteristics but different temperature range. INA180B2IDBVT: Tape and reel variant of the same industrial grade device. INA180B2QDBVRQ1: Automotive qualified AEC-Q100 version with similar specifications.