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INA214CQDCKRQ1

TIINA214CQDCKRQ1

Texas Instruments
Current Sense Amplifier 1 Circuit Single-Ended SC-70-6
Active5,754 in stock

Overview

The INA214CQDCKRQ1 is an automotive-qualified, zero-drift current shunt monitor designed for high-precision current sensing across a wide common-mode voltage range of -0.3V to 26V. This AEC-Q100 qualified device features a functional safety-capable architecture and an ultra-low supply current of 65uA, making it ideal for power-sensitive vehicle electronics. Its zero-drift technology ensures high accuracy with a 0.5 percent maximum gain error and minimal offset over the full temperature range of -40degC to 125degC.

Why Choose This Part

This amplifier offers a high gain of 100V/V with a zero-drift architecture that minimizes offset voltage drift and power consumption. The device is functional safety-capable, providing the necessary documentation for ISO 26262 compliant system designs. Its small SC-70-6 footprint saves significant PCB area while supporting a wide supply range from 2.7V to 26V.

Applications

Automotive Body Control Modules
Monitoring current in lighting, wipers, and window motors to detect overcurrent or stall conditions.
Battery Management Systems
High-side or low-side current sensing for SOC and SOH estimation in EV/HEV auxiliary systems.
Electronic Power Steering
Precise current feedback for motor control loops requiring functional safety compliance.
Precision Power Supplies
High-accuracy rail monitoring in industrial and automotive instrumentation using its 30 kHz bandwidth.

Key Specifications

Slew Rate 0.4V/us
Output Type Single-Ended
Mounting Type Surface Mount
Amplifier Type Current Sense
Package / Case 6-TSSOP, SC-88, SOT-363
Current - Supply 65uA
Number of Circuits 1
Current - Input Bias 28 uA
Operating Temperature -40degC ~ 125degC
Gain Bandwidth Product 30 kHz
Voltage - Input Offset 1 uV
Supplier Device Package SC-70-6
Voltage - Supply Span (Max) 26 V
Voltage - Supply Span (Min) 2.7 V

Getting Started

To evaluate this part, use a shunt resistor sized for your expected current range and connect the IN+ and IN- pins across the shunt. Ensure the supply voltage is between 2.7V and 26V and reference the REF pin to a stable voltage or ground to set the output swing. Texas Instruments offers the INA214EVM evaluation module for rapid prototyping of the INA21x series of current-sense monitors.

Also Consider

MAX40056FAUA+T Analog Devices - Bi-directional current sensing with integrated EMI filters for high-noise automotive environments.
INA226AQDGSRQ1 TITexas Instruments - Digital output version with I2C/SMBus interface for direct integration with microcontrollers.