AMC1204QDWRQ1

Product Overview

Category

The AMC1204QDWRQ1 belongs to the category of integrated circuits (ICs) used in automotive applications.

Use

This IC is primarily used for current sensing and isolation in automotive systems.

Characteristics

• High accuracy and precision in current measurement.
• Galvanic isolation between input and output.
• Wide operating temperature range suitable for automotive environments.
• Compact package for space-constrained applications.

Package

The AMC1204QDWRQ1 is available in a small-sized DW package, which stands for "SOIC Wide". This package offers ease of handling and compatibility with automated assembly processes.

Essence

The essence of the AMC1204QDWRQ1 lies in its ability to accurately measure current while providing electrical isolation, making it ideal for automotive applications where safety and reliability are crucial.

Packaging/Quantity

The AMC1204QDWRQ1 is typically packaged in reels containing 2500 units. This packaging quantity ensures efficient production and distribution processes.

Specifications

• Supply voltage: 3.3V
• Input current range: ±50A
• Isolation voltage: 4000Vrms
• Operating temperature range: -40°C to +125°C
• Output type: Digital

Detailed Pin Configuration

The AMC1204QDWRQ1 has the following pin configuration:

1. VDD: Power supply input
2. GND: Ground reference
3. IN+ / IN-: Current sense inputs
4. VOS: Offset voltage adjustment
5. VOUT: Digital output
6. NC: No connection
7. VDDO: Output power supply
8. GNDI: Isolated ground reference

Functional Features

• High accuracy current sensing with low offset voltage.
• Integrated isolation barrier for enhanced safety and noise immunity.
• Digital output for easy interfacing with microcontrollers.
• Adjustable offset voltage for calibration purposes.

Advantages

• Accurate current measurement in automotive systems, ensuring precise control and monitoring.
• Galvanic isolation protects sensitive electronics from high-voltage transients and improves system reliability.
• Wide operating temperature range allows reliable operation in extreme automotive environments.
• Compact package enables space-saving designs in automotive applications.

Disadvantages

• Limited input current range compared to some other current sensing ICs.
• Requires external calibration for accurate measurements.
• Higher cost compared to non-isolated current sensing solutions.

Working Principles

The AMC1204QDWRQ1 utilizes a Hall-effect sensor to measure the magnetic field generated by the current flowing through the sense inputs. This sensed magnetic field is then converted into a proportional voltage, which is further amplified and digitized. The integrated isolation barrier ensures that the measured current does not affect the surrounding circuitry, providing electrical safety and noise immunity.

Detailed Application Field Plans

The AMC1204QDWRQ1 finds extensive application in various automotive systems, including:

1. Battery management systems: Accurate current measurement for battery charging and discharging control.
2. Motor control: Precise current sensing for motor control algorithms, improving efficiency and performance.
3. Power inverters: Current monitoring in power conversion circuits for fault detection and protection.
4. Electric vehicle charging stations: Ensuring safe and efficient charging by accurately measuring the current flow.

Detailed and Complete Alternative Models

1. ACS712: Non-isolated current sensor IC with a wider input current range.
2. ISO1540: Isolated digital isolator with integrated current sensing capabilities.
3. INA219: High-precision current shunt monitor with I2C interface.

These alternative models offer different features and specifications, catering to diverse application requirements.

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