INA225AIDGKT

Product Overview

• Category: Integrated Circuit (IC)
• Use: Current Shunt Monitor
• Characteristics: High accuracy, low power consumption, small package size
• Package: VSSOP-8
• Essence: Measures current flowing through a shunt resistor and provides accurate voltage output proportional to the current
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +125°C
• Input Common Mode Voltage Range: -0.3V to +26V
• Output Voltage Range: 0V to Vcc
• Gain Error: ±0.25%
• Offset Voltage: ±100µV
• Bandwidth: 200kHz
• Quiescent Current: 60µA

Pin Configuration

The INA225AIDGKT has the following pin configuration:

1. V+ (Positive Power Supply)
2. V- (Negative Power Supply)
3. OUT (Output Voltage)
4. REF (Reference Voltage)
5. SET (Gain Setting)
6. NC (No Connection)
7. SDA (I2C Serial Data)
8. SCL (I2C Serial Clock)

Functional Features

• High accuracy current sensing
• Low power consumption
• I2C interface for easy integration with microcontrollers
• Programmable gain for flexibility in different applications
• Built-in reference voltage for precise measurements

Advantages

• Accurate current measurement with low error
• Wide supply voltage range allows for versatile usage
• Small package size enables space-constrained designs
• I2C interface simplifies communication with other devices
• Low power consumption extends battery life in portable applications

Disadvantages

• Limited input common mode voltage range may restrict certain applications
• Higher cost compared to some alternative models
• Not suitable for high current applications due to limited current handling capability

Working Principles

The INA225AIDGKT operates based on the principle of measuring the voltage drop across a shunt resistor to determine the current flowing through it. It utilizes a precision amplifier and an internal reference voltage to accurately convert the voltage drop into a proportional output voltage. The gain of the amplifier can be adjusted using the SET pin, allowing customization for different current ranges.

Detailed Application Field Plans

The INA225AIDGKT is commonly used in various applications that require accurate current monitoring. Some of the typical application fields include:

1. Battery management systems
2. Power supply monitoring
3. Motor control systems
4. Solar power systems
5. Industrial automation
6. Automotive electronics
7. Portable electronic devices

Detailed and Complete Alternative Models

1. INA226AIDGKT: Similar to INA225AIDGKT with additional features like integrated bus voltage measurement.
2. INA219AIDCNR: Lower-cost alternative with slightly reduced accuracy but similar functionality.
3. MAX4080SASA+: Higher accuracy alternative with wider input voltage range and higher bandwidth.

These alternative models provide options for different requirements and budgets while maintaining similar functionality to the INA225AIDGKT.

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