INA199B3RSWR

Product Overview

Category: Integrated Circuit (IC)

Use: The INA199B3RSWR is a high-side current shunt monitor IC that accurately measures the voltage drop across a current-sensing resistor to determine the current flowing through it. It is commonly used in various applications where precise current monitoring is required, such as power management systems, battery chargers, motor control, and industrial automation.

Characteristics: - High accuracy and precision - Wide common-mode voltage range - Low offset voltage and drift - High bandwidth for fast response - Small package size for space-constrained designs

Package: The INA199B3RSWR is available in a small SOT23-8 package, which provides compactness and ease of integration into different circuit designs.

Essence: The essence of the INA199B3RSWR lies in its ability to accurately measure current by sensing the voltage drop across a shunt resistor, enabling precise current monitoring and control in various electronic systems.

Packaging/Quantity: The INA199B3RSWR is typically sold in reels containing 3000 units per reel.

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Common-Mode Voltage Range: -16V to +80V
• Input Offset Voltage: ±150µV (maximum)
• Gain Error: ±0.5% (maximum)
• Bandwidth: 500kHz
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The INA199B3RSWR features an 8-pin SOT23 package with the following pin configuration:

1. V+ (Positive Supply Voltage)
2. V- (Negative Supply Voltage/Ground)
3. REF (Reference Voltage)
4. OUT (Output Voltage)
5. SET (Gain Setting)
6. NC (No Connection)
7. SHDN (Shutdown Control)
8. IN+ (Positive Input Terminal)

Functional Features

• High-side current sensing
• Wide common-mode voltage range allows measurement in various applications
• Low offset voltage and drift ensure accurate current measurements
• Gain setting pin enables flexibility in selecting the desired gain
• Shutdown control for power-saving mode when not in use

Advantages and Disadvantages

Advantages: - High accuracy and precision in current measurements - Wide common-mode voltage range for versatile applications - Compact package size for space-constrained designs - Low offset voltage and drift enhance measurement accuracy - Shutdown control feature for power-saving operation

Disadvantages: - Limited to high-side current sensing only - Requires an external shunt resistor for current measurement

Working Principles

The INA199B3RSWR operates based on the principle of measuring the voltage drop across a shunt resistor. It amplifies this voltage drop and provides an output voltage proportional to the current flowing through the shunt resistor. By accurately measuring this output voltage, the current flowing through the circuit can be determined.

Detailed Application Field Plans

The INA199B3RSWR finds application in various fields, including:

1. Power Management Systems: Enables precise current monitoring in power supplies, DC-DC converters, and voltage regulators.
2. Battery Chargers: Facilitates accurate current measurement during charging processes, ensuring optimal charging rates and battery health.
3. Motor Control: Allows precise current monitoring in motor control circuits, enabling efficient and safe operation.
4. Industrial Automation: Provides accurate current measurements in industrial automation systems, ensuring proper functioning and control.

Detailed and Complete Alternative Models

1. INA199A3RSWR: Similar to INA199B3RSWR but with a different gain setting range.
2. INA199C3RSWR: Another variant with a wider common-mode voltage range and higher bandwidth.
3. INA199D3RSWR: Offers enhanced accuracy and lower offset voltage compared to the INA199B3RSWR.

These alternative models provide options with varying specifications and features, allowing designers to choose the most suitable option for their specific application requirements.

Word count: 511 words