INA214AQDCKRQ1

Overview

The INA214AQDCKRQ1 is an automotive-grade, zero-drift current-shunt monitor manufactured by Texas Instruments. It features a wide common-mode voltage range from -0.3 V to 26 V and supports bidirectional current measurement. The device operates on a single supply voltage between 2.7 V and 26 V with a typical supply current of 65 µA. Key electrical specifications include a maximum offset voltage of ±100 µV, an input bias current of 28 µA, a gain-bandwidth product of 30 kHz, and a slew rate of 0.4 V/µs. It is housed in a SC-70-6 package and qualified to AEC-Q100 standards for Grade 1 operation across a temperature range of -40°C to +125°C.

Feature Summary

• Zero-drift architecture ensures high precision with low offset voltage drift over temperature.
• Wide common-mode voltage range enables both high-side and low-side measurements.
• Bidirectional capability allows accurate monitoring of current flow in either direction.
• Automotive qualification meets AEC-Q100 Grade 1 requirements for reliability.

Applications

• Automotive battery management systems
• High-side or low-side current sensing in vehicle electronics
• Functional safety-capable power monitoring circuits

Procurement Notes

Verify the specific ordering suffix matches the required package and tape-and-reel configuration. Confirm that the AEC-Q100 Grade 1 qualification aligns with your system's functional safety documentation requirements. Ensure the SC-70-6 footprint compatibility with your PCB layout before finalizing procurement decisions.

Selection Notes

Select this component when precise current monitoring is required in automotive environments with varying common-mode voltages. The zero-drift technology minimizes calibration needs compared to standard amplifiers. Consider the 65 µA supply current for low-power applications and verify that the 26 V common-mode range covers your shunt voltage levels.

Part Context

This part belongs to the INA21x-Q1 family of automotive-grade current-shunt monitors. These devices are designed for high-precision applications requiring stability over temperature. The 'Q1' designation indicates automotive qualification, while 'A' denotes Grade 1 temperature performance. The 'DCK' suffix specifies the SC-70-6 surface-mount package.

Replacement Considerations

Check for other members of the INA21x-Q1 family with different gains or packages if pinout compatibility is not required. Verify that any substitute maintains the same zero-drift characteristics and AEC-Q100 Grade 1 qualification for automotive use.