INA139NA/3KG4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Current Shunt Monitor
• Characteristics: High Common-Mode Voltage Range, Low Offset Voltage, Wide Supply Voltage Range
• Package: 8-Pin SOIC (Small Outline Integrated Circuit)
• Essence: Precision Instrumentation Amplifier
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage: ±2.25V to ±18V
• Input Offset Voltage: ±150µV (maximum)
• Common-Mode Rejection Ratio: 86dB (minimum)
• Operating Temperature Range: -40°C to +125°C
• Gain Bandwidth Product: 500kHz (typical)

Pin Configuration

The INA139NA/3KG4 has the following pin configuration:

1. V+
2. V-
3. REF
4. OUT
5. NC (No Connection)
6. IN-
7. IN+
8. GND

Functional Features

• High accuracy current sensing
• Wide common-mode voltage range
• Low power consumption
• Excellent linearity and stability
• Overvoltage protection
• Short-circuit protection

Advantages and Disadvantages

Advantages: - High precision and accuracy - Wide supply voltage range - Robust packaging for industrial applications - Low offset voltage

Disadvantages: - Relatively high cost compared to other current shunt monitors - Limited availability in certain regions

Working Principles

The INA139NA/3KG4 is a precision instrumentation amplifier designed for accurate current sensing. It utilizes a differential input stage to amplify the voltage across a shunt resistor, allowing precise measurement of current. The device operates by amplifying the voltage difference between the IN+ and IN- pins, rejecting common-mode noise and providing a high gain output signal.

Detailed Application Field Plans

The INA139NA/3KG4 is commonly used in various applications, including:

1. Power management systems
2. Motor control and drive circuits
3. Battery monitoring and protection
4. Industrial process control
5. Current sensing in automotive electronics
6. Precision measurement equipment

Detailed and Complete Alternative Models

1. INA138NA/3KG4: Similar to INA139NA/3KG4 but with lower gain bandwidth product.
2. INA140P: Precision instrumentation amplifier with higher gain and wider supply voltage range.
3. INA141UA: Low-power current shunt monitor with integrated voltage reference.

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

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