INA214CQDCKRQ1

Product Overview

Category: Integrated Circuit (IC)

Use: The INA214CQDCKRQ1 is a high-precision, low-power, bidirectional current-sensing amplifier. It is specifically designed for automotive applications, where accurate current measurements are required.

Characteristics: - High precision: The INA214CQDCKRQ1 offers a high level of accuracy in measuring current, making it suitable for demanding automotive applications. - Low power consumption: This IC is designed to operate with minimal power consumption, ensuring efficient energy usage. - Bidirectional current sensing: The INA214CQDCKRQ1 can measure both positive and negative currents, allowing for versatile current monitoring in automotive systems. - Automotive-grade package: The IC is housed in a small and robust package that meets the stringent requirements of the automotive industry. - Packaging/Quantity: The INA214CQDCKRQ1 is available in a small form factor package and is typically sold in reels or tubes.

Essence: The essence of the INA214CQDCKRQ1 lies in its ability to accurately measure bidirectional currents in automotive applications while consuming minimal power.

Specifications

• Supply voltage range: 2.7V to 5.5V
• Input common-mode voltage range: -0.3V to +26V
• Gain error: ±0.25%
• Offset voltage: ±50µV
• Bandwidth: 200kHz
• Quiescent current: 60µA
• Operating temperature range: -40°C to +125°C

Pin Configuration

The INA214CQDCKRQ1 has the following pin configuration:

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| | | INA214CQDCKRQ1 | |_______________________________________| | | | 1 2 3 4 5 6 7 8 9 | |_______________________________________|

Pin 1: V+ Pin 2: V- Pin 3: OUT Pin 4: REF Pin 5: GND Pin 6: SET Pin 7: NC Pin 8: NC Pin 9: NC ```

Functional Features

• High accuracy current sensing: The INA214CQDCKRQ1 provides precise current measurements, enabling accurate monitoring of automotive systems.
• Bidirectional current measurement: This IC can measure both positive and negative currents, making it suitable for applications such as battery management and motor control.
• Low power consumption: With its low quiescent current, the INA214CQDCKRQ1 minimizes power consumption, extending battery life in automotive applications.
• Wide operating voltage range: The IC can operate within a wide voltage range, allowing for flexibility in various automotive systems.

Advantages and Disadvantages

Advantages: - High precision current sensing - Bidirectional current measurement capability - Low power consumption - Wide operating voltage range

Disadvantages: - Limited bandwidth compared to some other current-sensing amplifiers - Higher cost compared to less precise alternatives

Working Principles

The INA214CQDCKRQ1 utilizes a differential amplifier configuration to accurately measure bidirectional currents. It employs a precision resistor network and an internal operational amplifier to amplify the voltage across the sense resistor, which is proportional to the current being measured. The amplified voltage is then outputted through the OUT pin.

Detailed Application Field Plans

The INA214CQDCKRQ1 is widely used in various automotive applications, including but not limited to:

1. Battery management systems: The IC enables accurate monitoring of battery charging and discharging currents, ensuring optimal performance and prolonging battery life.
2. Motor control: By measuring the current flowing through motors, the INA214CQDCKRQ1 facilitates precise control and protection of automotive motors.
3. Power distribution systems: The IC can be employed to monitor current flow in power distribution systems, enabling efficient energy management and fault detection.

Detailed and Complete Alternative Models

1. INA213AIDCKR: This alternative model offers similar functionality to the INA214CQDCKRQ1 but with a lower gain error of ±0.1%.
2. INA210AIDCKR: This alternative model is designed for bidirectional current sensing in automotive applications, with a higher bandwidth of 500kHz.
3. INA219BIDCNT: This alternative model combines current sensing with voltage measurement capabilities, making it suitable for comprehensive power monitoring applications.

These alternative models provide options with varying specifications to suit different requirements and application scenarios.

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