INA3221AQRGVRQ1

Product Overview

Category: Integrated Circuit (IC)

Use: The INA3221AQRGVRQ1 is a high-side current and voltage monitor IC. It is designed to accurately measure the current and voltage across three channels, making it suitable for various applications that require precise monitoring of power consumption.

Characteristics: - High accuracy - Low quiescent current - Wide input voltage range - Three independent channels - I2C interface for easy communication with microcontrollers

Package: VQFN-16

Essence: The INA3221AQRGVRQ1 is an essential component in systems where accurate current and voltage measurements are crucial for monitoring power usage and optimizing energy efficiency.

Packaging/Quantity: The INA3221AQRGVRQ1 is typically sold in reels containing 2500 units per reel.

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +125°C
• Current Measurement Range: ±3.2A
• Voltage Measurement Range: 0V to 26V
• Resolution: 12 bits

Pin Configuration

The INA3221AQRGVRQ1 has a total of 16 pins arranged as follows:

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

Pin 1: V+ (Positive Power Supply) Pin 2: V- (Negative Power Supply) Pin 3: SDA (I2C Data Line) Pin 4: SCL (I2C Clock Line) Pin 5: ALERT (Alert Output) Pin 6: A0 (Address Selection Bit 0) Pin 7: A1 (Address Selection Bit 1) Pin 8: A2 (Address Selection Bit 2) ... ```

Functional Features

• Accurate current and voltage monitoring across three channels
• Configurable alert thresholds for each channel
• I2C interface for easy integration with microcontrollers
• Low quiescent current for power-efficient operation
• Built-in temperature sensor for thermal monitoring

Advantages and Disadvantages

Advantages: - High accuracy measurements - Wide input voltage range - Three independent channels for simultaneous monitoring - Low power consumption - Compact package size

Disadvantages: - Limited current measurement range - Requires external components for voltage sensing

Working Principles

The INA3221AQRGVRQ1 operates by measuring the voltage drop across a shunt resistor connected in series with the load. By using an internal amplifier, it amplifies the small voltage drop and converts it into a measurable current. The measured current is then converted into a digital value using an analog-to-digital converter (ADC) and made available through the I2C interface.

Detailed Application Field Plans

The INA3221AQRGVRQ1 finds applications in various fields where accurate current and voltage monitoring is essential. Some of the common application areas include:

1. Battery Management Systems (BMS)
2. Power supply monitoring
3. Industrial automation
4. Energy management systems
5. Solar power systems
6. Electric vehicle charging stations

Detailed and Complete Alternative Models

1. INA219 - Similar functionality but with a single channel
2. INA226 - Higher current measurement range and additional features like power calculation
3. INA231 - Lower current measurement range but higher accuracy and resolution

These alternative models offer different trade-offs in terms of features, accuracy, and price, allowing users to choose the most suitable option for their specific requirements.

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