LM2903DR

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LM2903DR

+BOM

IC COMPARATOR DUAL 0.8MA 8-SOIC

  • ManufacturerRohm Semiconductor

  • Mfr. Part #LM2903DR

  • Package SOIC (D)-8

  • In Stock6320

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Specifications

Attribute Value
Package Tape & Reel (TR),Cut Tape (CT)
Series Trophy
ProductStatus Active
Type General Purpose
NumberofElements 2
OutputType CMOS, MOS, Open-Collector, TTL
Voltage-SupplySingle/Dual(±) 2V ~ 36V, ±1V ~ 18V
Voltage-InputOffset(Max) 7mV @ 5V
Current-InputBias(Max) 0.25µA @ 5V
Current-Output(Typ) 16mA @ 5V
Current-Quiescent(Max) 2.5mA
OperatingTemperature -40°C ~ 125°C
Package/Case 8-SOIC (0.154, 3.90mm Width)
MountingType Surface Mount

Overview

Description

The LM2903DR is a dual voltage comparator integrated circuit, commonly used in electronic applications requiring precise voltage comparison. It consists of two independent voltage comparator units within a single package, allowing it to compare two different voltages and provide a digital output indicating their relative magnitudes.
Key features of the LM2903DR include low power consumption, wide supply voltage range, and high input impedance, making it suitable for battery-powered and portable devices. It typically operates within a supply voltage range of 2V to 36V and can drive loads connected to a different power supply, facilitating versatile interfacing options.
The device comes in a small-outline SOIC-8 package, denoted by the "DR" in its name, which is suitable for surface-mount applications, saving space on printed circuit boards (PCBs). It is widely used in applications like zero-crossing detectors, signal conditioning, and threshold detectors due to its reliability and robust performance in harsh environments. Overall, the LM2903DR is a versatile and efficient choice for voltage comparison needs in electronic design.

Equivalent

The LM2903DR is a dual comparator. Equivalent products include the LM393 family (e.g., LM393DR from Texas Instruments), MC3303 from ON Semiconductor, and the LMV393 from Texas Instruments. These are dual comparators with similar voltage ranges and characteristics. When selecting an equivalent, verify the pin configuration, performance specifications, and package type to ensure compatibility with your application.

Features

The LM2903DR is a dual voltage comparator designed for a wide range of applications. Key features include:
1. Dual Comparators: It contains two independent voltage comparators in a single package.
2. Wide Supply Voltage Range: Operates with a supply voltage from 2 V to 36 V, making it versatile for various applications.
3. Low Input Offset Voltage: Features low input offset voltage, enhancing precision in voltage comparison.
4. Open-Collector Output: The open-collector output allows for wired-OR connections and level shifting.
5. Low Power Consumption: Designed for energy efficiency, making it suitable for battery-powered devices.
6. Fast Response Time: Offers quick response times, beneficial for applications requiring fast switching.
7. Wide Temperature Range: Functions effectively within a broad temperature range, typically from -40°C to 85°C.
8. Compact Package: Comes in a small SOIC-8 package, facilitating space-saving designs.
9. High Compatibility: Compatible with a wide range of logic families and circuits.
These features make the LM2903DR suitable for various uses, including level detection, signal conditioning, and zero-crossing detectors.

Pinout

The LM2903DR is a dual comparator integrated circuit. It features a total of 8 pins. Here is a brief overview of its pin functions:
1. V+ (Pin 8): Supply voltage pin.
2. Output A (Pin 1): Output for the first comparator.
3. Inverting Input A (Pin 2): Inverting input for the first comparator.
4. Non-Inverting Input A (Pin 3): Non-inverting input for the first comparator.
5. GND (Pin 4): Ground pin, common for both comparators.
6. Non-Inverting Input B (Pin 5): Non-inverting input for the second comparator.
7. Inverting Input B (Pin 6): Inverting input for the second comparator.
8. Output B (Pin 7): Output for the second comparator.
The LM2903DR is used for comparing voltages and providing a digital output based on the comparison, commonly applied in systems where two analog signals need to be compared.

Manufacturer

The LM2903DR is manufactured by Texas Instruments. Texas Instruments, often abbreviated as TI, is a global technology company based in Dallas, Texas. It is one of the largest semiconductor companies in the world and is known for designing and manufacturing a wide variety of electronic components and integrated circuits. The company specializes in developing analog and embedded processing products, which are used in a broad range of applications including automotive, industrial, personal electronics, and communications equipment. TI has a reputation for innovation in the semiconductor industry and offers a comprehensive portfolio of products that power electronic systems across the globe.

Application

The LM2903DR is a dual comparator commonly used in various applications, including:
1. Voltage Comparisons: It compares voltages in power supply circuits, battery monitoring, and level detection.
2. Sensor Interface: Interfaces with temperature sensors, photo detectors, and other analog sensors.
3. Zero-Crossing Detectors: Used in AC signal processing to detect zero-crossing points.
4. Oscillator Circuits: Functions in square wave and pulse generation applications.
5. Window Comparators: Implements window comparator circuits for range detection.
6. Analog Signal Processing: Utilized in signal conditioning and analog-to-digital conversion systems.
7. Industrial Control Systems: Applied in automation and control systems for monitoring and protective functions.
These areas leverage the LM2903DR's low power consumption and ability to operate over a wide voltage range.

Package

The LM2903DR is a dual comparator IC available in a SOIC-8 (Small Outline Integrated Circuit) package. This surface-mount package type is compact, making it suitable for applications that require efficient use of space on a printed circuit board.

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