LM339DBR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Comparator
• Characteristics: Low power consumption, wide supply voltage range, high input impedance, open-drain output, and low propagation delay.
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: The LM339DBR is a quad voltage comparator designed for use in a wide range of applications that require precision analog signal comparisons.
• Packaging/Quantity: The LM339DBR is available in tape and reel packaging with 2500 units per reel.

Specifications

• Supply Voltage Range: 2V to 36V
• Input Offset Voltage: ±1mV
• Input Bias Current: ±25nA
• Response Time: 1.3μs
• Output Sink Current: 16mA
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM339DBR has 14 pins arranged as follows:

___________ VCC | 1 14 | GND IN1 | 2 13 | OUT1 IN2 | 3 12 | OUT2 IN3 | 4 11 | OUT3 IN4 | 5 10 | OUT4 GND | 6 9 | NC OUT | 7 8 | NC ‾‾‾‾‾‾‾‾‾‾‾

Functional Features

• Quad voltage comparator with open-drain outputs.
• Wide supply voltage range allows operation from various power sources.
• High input impedance minimizes loading effects on the input signals.
• Low power consumption makes it suitable for battery-powered applications.
• Open-drain outputs provide flexibility in interfacing with other devices.

Advantages and Disadvantages

Advantages: - Wide supply voltage range allows for versatile applications. - Low power consumption extends battery life in portable devices. - High input impedance minimizes signal degradation. - Open-drain outputs provide flexibility in circuit design.

Disadvantages: - Limited output current capability may require additional buffering for certain applications. - Input offset voltage may introduce errors in precision applications.

Working Principles

The LM339DBR compares the voltages applied to its four input pins (IN1 to IN4) with a reference voltage. It then produces a logic-level output based on the comparison results. The open-drain outputs allow for easy interfacing with other digital or analog circuits.

Detailed Application Field Plans

The LM339DBR is commonly used in various applications, including:

1. Battery chargers: Voltage monitoring and control.
2. Motor control: Speed and position sensing.
3. Power supplies: Overvoltage and undervoltage protection.
4. Signal conditioning: Amplification and filtering.
5. Automotive electronics: Fault detection and safety systems.

Detailed and Complete Alternative Models

Some alternative models to the LM339DBR include:

1. LM393: Dual voltage comparator with similar specifications.
2. LM311: Single voltage comparator with higher speed and wider temperature range.
3. LM324: Quad operational amplifier with built-in voltage comparators.

These alternatives offer different features and performance characteristics, allowing users to choose the most suitable option for their specific application requirements.

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