INA214CQDCKRQ1

Overview

The INA214CQDCKRQ1 is a unidirectional, zero-drift current shunt monitor from the Texas Instruments INA21x family. It features a fixed gain of 50 V/V and operates with a supply voltage range of 2.7 V to 26 V. The device supports bidirectional current sensing with a common-mode voltage range of -0.3 V to 26 V. Key electrical parameters include a maximum input offset voltage of 5 µV, a gain error of 0.5%, and a quiescent current of 100 µA. It provides a high Common-Mode Rejection Ratio (CMRR) of 120 dB and functions within an operating temperature range of -40°C to +125°C.

Feature Summary

• Zero-drift architecture ensures low offset voltage for accurate measurement of small shunt voltages.
• Supports both high-side and low-side current sensing configurations.
• Automotive-grade qualification compliant with AEC-Q100 standards.

Applications

• Automotive battery monitoring systems
• Load switch control circuits
• Power management unit current sensing

Procurement Notes

Verify the specific suffix 'CQ' indicates the automotive grade and fixed gain variant. Confirm the package type matches the design requirements, as the 'DCK' prefix typically denotes the SC-70-6 package. Ensure the component meets AEC-Q100 reliability standards required for automotive integration. Check for moisture sensitivity levels if reflow soldering is planned.

Selection Notes

Select this part when a fixed gain of 50 V/V is required for unidirectional current monitoring in automotive environments. It is suitable for applications needing high precision with minimal drift over temperature. Compare against other INA21x variants if different gain factors or bidirectional output capabilities are needed. Consider the SC-70-6 package size for space-constrained PCB layouts.

Part Context

The INA214CQDCKRQ1 belongs to the INA21x series of voltage-output current shunt monitors. This family is characterized by its zero-drift technology, which minimizes offset voltage errors. The Q1 suffix identifies it as an automotive-grade product designed for robust performance in vehicle electronics. It complements other devices like the INA214BIDCKT, differing primarily in gain and automotive qualification status.

Replacement Considerations

INA214BIDCKT: Verify if the higher gain (100 V/V) and bidirectional output are compatible with the existing circuit design.

FAQ

Is the INA214CQDCKRQ1 capable of bidirectional current measurement?

No, the INA214CQDCKRQ1 is a unidirectional current shunt monitor. For bidirectional sensing, consider the INA214BIDCKT.

What is the fixed gain of the INA214CQDCKRQ1?

The INA214CQDCKRQ1 has a fixed gain of 50 V/V.