INA199B2RSWR

Product Overview

Category: Integrated Circuit (IC)

Use: The INA199B2RSWR is a high-side current shunt monitor IC designed for precise current measurement in various applications. It provides accurate current sensing and monitoring capabilities, making it suitable for use in power management systems, battery chargers, motor control, and other similar applications.

Characteristics: - High accuracy current sensing - Wide input voltage range - Low offset voltage and drift - High common-mode rejection ratio - Small package size for space-constrained designs

Package: The INA199B2RSWR is available in a small SOT-23 package, which is ideal for compact circuit board layouts and space-limited applications.

Essence: The essence of the INA199B2RSWR lies in its ability to accurately measure current in high-side configurations, providing valuable information for system monitoring and control.

Packaging/Quantity: The INA199B2RSWR is typically sold in reels containing 3000 units per reel.

Specifications

• Supply Voltage Range: 2.7V to 18V
• Input Common-Mode Voltage Range: -0.3V to V+ + 0.3V
• Quiescent Current: 60µA (typical)
• Gain Error: ±0.5% (maximum)
• Offset Voltage: ±100µV (maximum)
• Bandwidth: 500kHz (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The INA199B2RSWR features a 6-pin SOT-23 package with the following pin configuration:

1. V+ (Positive Supply Voltage)
2. V- (Negative Supply Voltage)
3. OUT (Output Voltage)
4. REF (Reference Voltage)
5. SHDN (Shutdown)
6. IN+ (Positive Current Sense Input)

Functional Features

• High accuracy current sensing
• Wide input voltage range for versatile applications
• Shutdown mode for power-saving operation
• Reference voltage output for system calibration
• Low offset voltage and drift for precise measurements
• High common-mode rejection ratio for noise immunity

Advantages and Disadvantages

Advantages: - Accurate and reliable current sensing - Wide operating voltage range - Small package size for space-constrained designs - Low offset voltage ensures precise measurements - High common-mode rejection ratio minimizes noise interference

Disadvantages: - Limited to high-side current sensing applications - Requires external components for proper operation - Higher cost compared to some alternative models

Working Principles

The INA199B2RSWR operates based on the principle of measuring the voltage drop across a shunt resistor in series with the load. By amplifying this voltage drop, it accurately represents the current flowing through the load. The IC's internal circuitry provides gain, offset compensation, and other features to ensure accurate and reliable current measurement.

Detailed Application Field Plans

The INA199B2RSWR finds application in various fields, including but not limited to: 1. Power management systems 2. Battery chargers 3. Motor control systems 4. Industrial automation 5. Energy monitoring and control

Detailed and Complete Alternative Models

1. INA199A2RSWR: Similar to the INA199B2RSWR, but with a different gain and offset voltage specifications.
2. INA199C2RSWR: Another variant with slightly different characteristics, suitable for specific applications.
3. INA199D2RSWR: A higher precision version of the INA199B2RSWR, offering improved accuracy and lower offset voltage.

These alternative models provide flexibility in choosing the most suitable IC for specific requirements while maintaining compatibility with the INA199 series.

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