LM139ADR

Product Overview

Category: Integrated Circuits (ICs)

Use: LM139ADR is a quad voltage comparator that operates from a single power supply. It is designed to compare voltages and provide digital outputs indicating the larger voltage.

Characteristics: - Quad voltage comparator - Single power supply operation - Low input bias current - Wide range of operating voltage - High output sink current capability

Package: SOIC-14

Essence: LM139ADR is an essential component in electronic circuits where voltage comparison is required.

Packaging/Quantity: LM139ADR is available in reels with 2500 units per reel.

Specifications

• Supply Voltage Range: 2V to 36V
• Input Offset Voltage: ±5mV
• Input Bias Current: ±25nA
• Response Time: 1.3μs
• Output Sink Current: 20mA
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

LM139ADR has a total of 14 pins arranged as follows:

```

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| | --|IN1+ VCC|-- --|IN1- OUT|-- --|IN2+ IN3|-- --|IN2- GND|-- --|IN4+ NC |-- --|IN4- NC |-- |___________| ```

Functional Features

• Quad voltage comparator allows for multiple voltage comparisons simultaneously.
• Single power supply operation simplifies circuit design.
• Low input bias current minimizes errors in voltage comparison.
• Wide range of operating voltage makes it suitable for various applications.
• High output sink current capability enables driving of external loads.

Advantages

• Compact and versatile IC for voltage comparison applications.
• Easy to integrate into electronic circuits.
• Low power consumption.
• Wide operating temperature range allows for use in extreme conditions.

Disadvantages

• Limited number of comparators (4) in a single package.
• Not suitable for high-frequency applications.

Working Principles

LM139ADR compares the voltages applied to its input pins and provides digital outputs based on the comparison results. The inputs are compared with an internal reference voltage, and the output switches to a logic high or low state depending on which input voltage is higher.

Detailed Application Field Plans

LM139ADR finds applications in various fields such as: 1. Battery management systems 2. Power supply monitoring 3. Motor control circuits 4. Signal conditioning 5. Threshold detection 6. Level shifting 7. Window comparators 8. Oscillators

Alternative Models

Some alternative models that can be used instead of LM139ADR include: 1. LM339ADR: Quad voltage comparator with open-drain outputs. 2. LM2901DR: Quad voltage comparator with push-pull outputs. 3. LM311N: Single voltage comparator with differential inputs.

These alternatives offer similar functionality and can be chosen based on specific requirements and availability.

In conclusion, LM139ADR is a versatile quad voltage comparator that offers precise voltage comparison in electronic circuits. Its compact size, low power consumption, and wide operating voltage range make it suitable for various applications. However, its limited number of comparators and unsuitability for high-frequency applications should be considered when selecting this IC.