INA381A2IDGSR

Current Regulation/Management Overview

The INA381A2IDGSR is a high-speed current sense amplifier from Texas Instruments, housed in a VSSOP-10 package. It features a common-mode input voltage range of -0.2 V to +26 V and operates on a single supply voltage between 2.7 V and 5.5 V. The device provides a fixed gain of 4 V/V with a 3 dB bandwidth of 350 kHz. Key electrical specifications include a maximum offset voltage of 500 μV at 25°C, a common-mode rejection ratio (CMRR) of 100 dB, and an operating temperature range of -40°C to +125°C.

Current Regulation/Management Feature Summary

• Integrated comparator for fast fault response
• High accuracy with low offset voltage
• Wide common-mode input voltage range

Current Regulation/Management Applications

• Overcurrent protection in power distribution systems
• Current monitoring in industrial automation
• Battery management systems

Current Regulation/Management Procurement Notes

Verify the specific suffix 'A2' indicates the fixed 4 V/V gain configuration, distinct from other gain variants in the INA381 family. Confirm the 'DGSR' suffix corresponds to the VSSOP-10 package and reel packaging format. Ensure compatibility with the target PCB footprint and thermal requirements for the surface-mount installation.

Current Regulation/Management Selection Notes

Select this component when a fixed 4 V/V gain is required for high-speed current sensing applications. The integrated comparator feature simplifies circuit design by eliminating external components for overcurrent detection. Consider the 350 kHz bandwidth for applications requiring rapid transient response.

Current Regulation/Management Part Context

This part belongs to the INA381 series of high-speed current sense amplifiers. It shares the same package and general functionality as the INA381A1IDGSR but differs in its internal gain setting. The series is designed for applications demanding high accuracy and fast response times in harsh electrical environments.

Current Regulation/Management Replacement Considerations

The INA381A1IDGSR is a functional substitute within the same family, differing only in the fixed gain setting (2 V/V vs. 4 V/V). Verify that the system gain requirements align with the replacement's specific gain factor before implementation.