INA271AQDRZF

Current Regulation/Management Overview

The INA271AQDRZF is an automotive-grade, high-speed voltage output current shunt monitor manufactured by Texas Instruments. It supports both low-side and high-side current sensing with a common-mode input voltage range of -16 V to 80 V. The device operates on a single supply voltage between 2.7 V and 18 V, drawing a typical operating supply current of 950 µA. It features a fixed gain of 20 V/V and a bandwidth of 130 kHz. Designed for harsh environments, it functions within a temperature range of -40°C to +125°C and holds AEC-Q100 qualification. The component is housed in an 8-pin SOIC package.

Current Regulation/Management Feature Summary

• Supports bidirectional current sensing via simplified filter inputs for both low-side and high-side configurations
• Automotive qualified under AEC-Q100 standards for reliability in vehicle applications
• High common-mode voltage tolerance up to 80 V enables monitoring in high-voltage systems

Current Regulation/Management Applications

• Automotive battery management systems
• Electric vehicle (EV) powertrain control units
• Charging station current monitoring
• Motor drive current sensing

Current Regulation/Management Procurement Notes

Verify the specific suffix 'ZF' against official Texas Instruments documentation to confirm packaging type, as standard datasheets may list 'DR' or 'DRZ'. Ensure the procurement channel provides valid traceability for AEC-Q100 certified components. Confirm that the received parts match the exact part number to avoid functional mismatches due to variant differences.

Current Regulation/Management Selection Notes

Select this component when high common-mode voltage rejection is required in automotive environments. It is suitable for applications needing fast response times with simplified external filtering. Compare gain accuracy and bandwidth requirements against other INA270 variants if lower cost or different pinouts are acceptable. Ensure the system voltage stays within the 2.7 V to 18 V supply range.

Current Regulation/Management Part Context

This part belongs to the INA270 family of current shunt monitors from Texas Instruments. The family includes variants like INA270 and INA271, differentiated by gain and bandwidth specifications. The 'Q1' suffix indicates automotive qualification, while 'ZF' typically denotes a specific bulk packaging option distinct from the standard tape-and-reel formats found in many industrial counterparts.

Current Regulation/Management Replacement Considerations

INA271AQDR is a non-automotive equivalent with identical electrical characteristics but without AEC-Q100 certification. INA270AQDR offers similar functionality with potentially different gain or bandwidth specs. Verify pin compatibility and thermal performance before substitution.