LM339ADR

Product Overview

Category: Integrated Circuits (ICs)

Use: LM339ADR is a quad voltage comparator that is commonly used in various electronic circuits. It compares two input voltages and provides an output based on the comparison result.

Characteristics: - Low power consumption - Wide supply voltage range - High input impedance - Open collector outputs - Fast response time

Package: LM339ADR is available in an SOIC-14 package, which stands for Small Outline Integrated Circuit. This package is compact and suitable for surface mount applications.

Essence: The essence of LM339ADR lies in its ability to compare voltages and provide a digital output based on the comparison result.

Packaging/Quantity: LM339ADR is typically sold in reels or tubes containing multiple units. The exact quantity may vary depending on the supplier.

Specifications

• Supply Voltage Range: 2V to 36V
• Input Offset Voltage: 2mV (maximum)
• Input Bias Current: 25nA (maximum)
• Response Time: 1.3μs (typical)
• Output Sink Current: 16mA (maximum)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

LM339ADR has a total of 14 pins, arranged as follows:

___________ VCC | 1 14 | GND IN(-) | 2 13 | OUT(4) IN(+) | 3 12 | OUT(3) IN(-) | 4 11 | OUT(2) IN(+) | 5 10 | OUT(1) REF | 6 9 | OUT(0) VCC | 7 8 | N/C -------------

Functional Features

• Quad voltage comparator: LM339ADR contains four independent voltage comparators in a single package.
• Wide supply voltage range: It can operate from 2V to 36V, making it suitable for various power supply configurations.
• Open collector outputs: The outputs are designed as open collectors, allowing easy interfacing with other digital circuits.
• Fast response time: LM339ADR offers a quick response time of 1.3μs, enabling rapid voltage comparisons.

Advantages and Disadvantages

Advantages: - Low power consumption: LM339ADR consumes minimal power, making it suitable for battery-powered applications. - Versatile: It can be used in a wide range of electronic circuits that require voltage comparison. - Compact package: The SOIC-14 package is space-efficient and suitable for surface mount applications.

Disadvantages: - Limited output current: The maximum output sink current is 16mA, which may not be sufficient for certain applications requiring higher current levels. - Single-ended inputs: LM339ADR only supports single-ended input voltages, limiting its use in differential voltage comparison applications.

Working Principles

LM339ADR works based on the principle of voltage comparison. It compares the voltages applied to its input pins and produces a digital output based on the comparison result. When the voltage at the non-inverting input (+) is higher than the voltage at the inverting input (-), the output goes high. Conversely, when the voltage at the inverting input (-) is higher, the output goes low.

Detailed Application Field Plans

LM339ADR finds applications in various fields, including but not limited to: - Battery management systems - Motor control circuits - Voltage monitoring and protection circuits - Signal conditioning circuits - Level detection circuits

Alternative Models

There are several alternative models available that offer similar functionality to LM339ADR. Some popular alternatives include: - LM393: Dual voltage comparator - LM311: Single voltage comparator with differential inputs - LM324: Quad operational amplifier with built-in comparators

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

In conclusion, LM339ADR is a versatile quad voltage comparator that offers low power consumption, wide supply voltage range, and fast response time. Its compact package and open collector outputs make it suitable for various electronic circuits. However, it has limitations in terms of output current and support for single-ended inputs. LM339ADR finds applications in diverse fields such as battery management, motor control, and voltage monitoring. Users can also consider alternative models like LM393, LM311, and LM324 based on their specific needs.