INA139NA/250G4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Current Shunt Monitor
• Characteristics: High Common-Mode Voltage Range, Low Offset Voltage, Wide Supply Voltage Range
• Package: SOIC-8
• Essence: Precision Current Measurement
• Packaging/Quantity: Tape and Reel, 250 pieces per reel

Specifications

• Supply Voltage Range: ±2.25V to ±18V
• Common-Mode Voltage Range: -14V to +80V
• Input Offset Voltage: ±150µV (maximum)
• Gain Error: ±0.5% (maximum)
• Bandwidth: 200kHz (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The INA139NA/250G4 IC 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 common-mode voltage range allows for accurate current measurement in high voltage applications.
• Low offset voltage ensures precise current sensing.
• Wide supply voltage range provides flexibility in various power supply configurations.

Advantages

• Accurate and precise current measurement.
• Suitable for high voltage applications.
• Versatile supply voltage range.

Disadvantages

• Limited bandwidth compared to some other current shunt monitors.
• Higher cost compared to basic current sensing solutions.

Working Principles

The INA139NA/250G4 is a current shunt monitor IC that utilizes a differential amplifier to measure the voltage drop across a shunt resistor. By amplifying this voltage drop, it accurately represents the current flowing through the shunt resistor. The IC's high common-mode voltage range allows it to handle high voltage differentials while maintaining accuracy.

Application Field Plans

The INA139NA/250G4 is commonly used in various applications that require precise current measurement, such as:

1. Power supply monitoring and control.
2. Motor control systems.
3. Battery management systems.
4. Industrial automation.
5. Energy monitoring and metering.

Alternative Models

• INA138NA/250G4: Similar specifications and features, but with a lower common-mode voltage range.
• INA140NA/250G4: Higher bandwidth and lower offset voltage, suitable for more demanding applications.
• INA141UA/250G4: Single-channel version of the INA139NA/250G4, suitable for applications requiring only one current measurement channel.

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