BD14211G-LATR

Overview

The BD14211G-LATR is a single-channel current sense amplifier from ROHM Semiconductor, designed for high-precision current detection in industrial and automotive systems. It operates on a single supply voltage ranging from 2.7V to 5.5V. The device features a wide common-mode voltage range of -0.2V to +26V, allowing it to monitor currents across various power rails. With a fixed gain of 50 V/V and a typical operating current of 0.17mA, it offers low power consumption. Key electrical specifications include a maximum gain accuracy of ±1%, an input offset voltage optimized for precision, and a low input bias current of 1μA to minimize shunt resistor path errors.

Feature Summary

• High-precision current sensing with internally matched gain resistors to reduce gain error and offset voltage.
• Wide common-mode voltage range supporting negative voltage inputs down to -0.2V.
• Low input bias current minimizes offset errors in the shunt resistor path.
• Compact SSOP-6 package design facilitates space-saving implementations.

Applications

• Current feedback circuits in industrial equipment
• Overcurrent limitation and protection systems
• Battery level monitoring in 12V and 24V power systems

Procurement Notes

Verify the specific suffix 'LA' corresponds to the required gain configuration and packaging format. Confirm that the SSOP-6 tape-and-reel quantity matches production requirements. Ensure the operating environment stays within the specified temperature range of -40°C to 125°C. Check for any updated lifecycle status or recommended replacement parts if this item is nearing end-of-life.

Selection Notes

Select this component when a single-ended, unidirectional current measurement is required with high accuracy. The 50 V/V gain is suitable for detecting small voltage drops across low-value shunt resistors. Consider the -0.2V to +26V common-mode range for applications where the shunt may be placed at higher potentials relative to ground. Ensure the system supply voltage remains between 2.7V and 5.5V.

Part Context

This part belongs to the BD1421xG-LA series of current sense amplifiers, which are engineered for compact, high-performance current monitoring. The series leverages internal resistor matching to achieve stable performance over temperature variations. It serves as a direct replacement for discrete op-amp solutions, reducing board space and simplifying design complexity for standard 12V and 24V applications.

Replacement Considerations

BD14210G-LATR (Gain 10 V/V)

FAQ

What is the common-mode voltage range of the BD14211G-LATR?

The device supports a common-mode voltage range from -0.2V to +26V.

Does the BD14211G-LATR support bidirectional current sensing?

No, this specific model is designed for unidirectional current sensing applications.