INA203AQPWRQ1

Product Overview

Category: Integrated Circuit (IC)

Use: Current Shunt Monitor

Characteristics: - High accuracy current sensing - Wide common-mode voltage range - Low offset voltage and drift - Small package size - Low power consumption

Package: QFN (Quad Flat No-Lead)

Essence: The INA203AQPWRQ1 is a high-side current shunt monitor IC designed for accurate current measurement in automotive and industrial applications.

Packaging/Quantity: The INA203AQPWRQ1 is available in a 16-pin QFN package. It is typically sold in reels of 2500 units.

Specifications

• Supply Voltage Range: 2.7V to 26V
• Common-Mode Voltage Range: -0.3V to +26V
• Input Offset Voltage: ±150µV (max)
• Gain Error: ±0.5% (max)
• Bandwidth: 500kHz (typ)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The INA203AQPWRQ1 has the following pin configuration:

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| | | 1 2 3 4 5 6 7 8 9 10| |_______________________________________|

Pin 1: V+ (Positive Power Supply) Pin 2: V- (Negative Power Supply) Pin 3: REF (Reference Voltage) Pin 4: IN+ (Positive Current Sense Input) Pin 5: IN- (Negative Current Sense Input) Pin 6: OUT (Output) Pin 7: NC (No Connection) Pin 8: NC (No Connection) Pin 9: NC (No Connection) Pin 10: GND (Ground) ```

Functional Features

• High accuracy current sensing with a gain error of ±0.5% (max).
• Wide common-mode voltage range allows for measurement in various applications.
• Low offset voltage and drift ensure accurate current measurements over time.
• Small package size enables space-saving designs.
• Low power consumption for energy-efficient operation.

Advantages and Disadvantages

Advantages: - High accuracy current sensing - Wide common-mode voltage range - Small package size - Low power consumption

Disadvantages: - Limited number of pins for additional functionality - Not suitable for high voltage applications (>26V)

Working Principles

The INA203AQPWRQ1 operates based on the principle of measuring the voltage drop across a shunt resistor to determine the current flowing through it. It amplifies this voltage drop and provides an output proportional to the current being measured. The device utilizes a precision amplifier and internal reference voltage to achieve accurate current measurements.

Detailed Application Field Plans

The INA203AQPWRQ1 is commonly used in the following applications:

1. Battery management systems in electric vehicles
2. Motor control and drive systems
3. Power supplies and converters
4. Industrial automation and control systems
5. Solar inverters and energy management systems

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to the INA203AQPWRQ1 are:

1. INA199A2PWP - Current Shunt Monitor with lower supply voltage range
2. INA210AIDCKR - Current Shunt Monitor with higher bandwidth
3. INA213AIDCKT - Current Shunt Monitor with integrated temperature sensor

These alternative models offer different features and specifications, allowing designers to choose the most suitable option for their specific application requirements.

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