INA301A3QDGKRQ1

Current Regulation/Management Overview

The INA301A3QDGKRQ1 is an automotive-grade current monitor manufactured by Texas Instruments, designed for high and low-side sensing applications. It operates within a supply voltage range of 2.7 V to 20 V and supports input voltages from 0 V to 36 V. The device features a fixed gain of 50 V/V, ensuring precise current measurement with a maximum gain error of 0.5%. Key electrical specifications include a quiescent current of 1.6 mA, a bandwidth of 1.3 MHz, and a common-mode rejection ratio (CMRR) of 120 dB. It is housed in an 8-VSSOP package and certified to AEC-Q100 standards for operation between -40°C and +125°C.

Current Regulation/Management Feature Summary

• Supports both high-side and low-side current monitoring configurations
• Provides a fixed internal gain of 50 V/V for simplified circuit design
• Features high common-mode rejection ratio for accurate measurements in noisy environments

Current Regulation/Management Applications

• Automotive battery management systems
• Motor control circuits
• Power supply current monitoring

Current Regulation/Management Procurement Notes

Verify the specific suffix 'A3' indicates the fixed gain configuration of 50 V/V when sourcing. Confirm that the QDGKRQ1 designation ensures compliance with AEC-Q100 automotive reliability standards. Check datasheet revisions for any updates regarding thermal characteristics or recommended operating conditions prior to final implementation.

Current Regulation/Management Selection Notes

Select this component when a fixed gain of 50 V/V is required for current sensing in automotive environments. Ensure the application voltage does not exceed the 36 V input limit. Consider the 1.6 mA quiescent current if power efficiency is critical compared to higher-performance alternatives.

Current Regulation/Management Part Context

This part belongs to the INA301-Q1 family of current sense amplifiers from Texas Instruments. It is specifically engineered for automotive applications requiring robust performance under varying temperature conditions. The device integrates precision resistors to set the gain, eliminating the need for external components.

Current Regulation/Management Replacement Considerations

INA301A2QDGKRQ1 offers a different fixed gain option. INA301A1QDGKRQ1 provides an alternative gain setting within the same package and qualification standard.