INA322EA/250

Product Overview

• Category: Integrated Circuits
• Use: Current Shunt Monitor
• Characteristics: High accuracy, low power consumption, small package size
• Package: SOIC-16
• Essence: Monitors current flow through shunt resistors
• Packaging/Quantity: Tape and Reel, 250 units per reel

Specifications

• Supply Voltage: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +125°C
• Current Measurement Range: ±3.2A
• Accuracy: ±0.8% (max) over temperature
• Interface: I2C/SMBus compatible

Pin Configuration

The INA322EA/250 has a total of 16 pins arranged as follows:

1. V+ (Positive Supply Voltage)
2. V- (Negative Supply Voltage)
3. SDA (I2C Data Line)
4. SCL (I2C Clock Line)
5. A0 (Address Select Bit 0)
6. A1 (Address Select Bit 1)
7. A2 (Address Select Bit 2)
8. ALERT (Alert Output)
9. VSH1 (Shunt Voltage Input 1)
10. VBUS1 (Bus Voltage Input 1)
11. VSH2 (Shunt Voltage Input 2)
12. VBUS2 (Bus Voltage Input 2)
13. VSH3 (Shunt Voltage Input 3)
14. VBUS3 (Bus Voltage Input 3)
15. GND (Ground)
16. NC (No Connection)

Functional Features

• Measures voltage across shunt resistors for accurate current monitoring
• Provides programmable conversion times for optimization of power consumption
• Supports multiple devices on the same I2C bus with selectable addresses
• Generates an alert signal when current exceeds a programmable threshold

Advantages and Disadvantages

Advantages: - High accuracy current measurement - Low power consumption - Small package size for space-constrained applications - Flexible address selection for multiple device integration

Disadvantages: - Limited current measurement range (±3.2A) - Requires I2C/SMBus interface for communication

Working Principles

The INA322EA/250 is designed to monitor current flow through shunt resistors in various applications. It utilizes the voltage drop across the shunt resistor to measure the current passing through it. By amplifying and converting this voltage into a digital value, the device provides accurate current measurements.

Detailed Application Field Plans

The INA322EA/250 can be used in a wide range of applications, including but not limited to:

1. Battery management systems
2. Power supply monitoring
3. Motor control systems
4. Solar energy harvesting
5. Industrial automation

Detailed and Complete Alternative Models

1. INA219: Similar functionality with a lower current measurement range (±1A).
2. INA226: Offers higher current measurement range (±36A) with additional features like power calculation.
3. INA240: Provides galvanic isolation for high-voltage applications.

These alternative models offer different specifications and features to suit specific application requirements.

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