INA139NA/250

Product Overview

• Category: Integrated Circuits (ICs)
• Use: Current Sense Amplifier
• Characteristics:
  • High common-mode voltage range
  • Low offset voltage and drift
  • Wide supply voltage range
  • Rail-to-rail output swing
• Package: DIP-8
• Essence: Precision, high-side current sensing
• Packaging/Quantity: Tube of 25 pieces

Specifications

• Supply Voltage: ±2.25 V to ±18 V
• Input Offset Voltage: ±150 µV (maximum)
• Input Bias Current: ±100 nA (maximum)
• Common-Mode Rejection Ratio: 86 dB (typical)
• Gain Bandwidth Product: 500 kHz (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The INA139NA/250 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
• Rail-to-rail output swing
• Internal frequency compensation

Advantages

• Precise and reliable current sensing
• Suitable for high-side current measurement
• Wide operating temperature range
• Robust performance in harsh environments
• Versatile and flexible design options

Disadvantages

• Limited number of pins for additional functionalities
• Relatively higher cost compared to some alternatives
• Not suitable for low-side current sensing applications

Working Principles

The INA139NA/250 is a precision current sense amplifier that measures the voltage drop across a shunt resistor to determine the current flowing through it. It amplifies the small voltage signal and provides a high-accuracy output proportional to the sensed current. The device operates in a wide common-mode voltage range, allowing it to handle high-side current sensing applications.

Detailed Application Field Plans

The INA139NA/250 is commonly used in various applications, including:

1. Power management systems
2. Battery monitoring and protection circuits
3. Motor control and drive systems
4. Industrial automation and control
5. Energy monitoring and metering
6. Current sensing in automotive electronics
7. Solar power systems
8. Telecommunications equipment

Detailed and Complete Alternative Models

Some alternative models that can be considered for current sense amplification are:

1. INA138NA/250
2. INA140P
3. MAX4080SASA+
4. AD8211WBRZ
5. LTC6101AIS5#PBF

These alternatives offer similar functionalities and performance characteristics, providing options for different design requirements.

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