LM2903D

Product Overview

Category: Integrated Circuits (ICs)

Use: LM2903D is a dual differential comparator designed for use in industrial, automotive, and consumer applications. It is commonly used to compare two voltages and provide a digital output based on the comparison result.

Characteristics: - Dual differential comparator - Low input offset voltage - Wide supply voltage range - Low power consumption - High-speed response - Available in various packages

Package: LM2903D is available in a small outline package (SOP) with eight pins.

Essence: The essence of LM2903D lies in its ability to accurately compare two input voltages and generate a digital output based on the comparison result.

Packaging/Quantity: LM2903D is typically sold in reels containing 2500 units per reel.

Specifications

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

Pin Configuration

LM2903D has a total of eight pins arranged as follows:

```

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| | --| IN(-) | --| IN(+) | --| VCC | --| OUT | --| GND | --| OFFSET | --| NC | |__________| ```

Functional Features

• Dual differential inputs for voltage comparison
• Open collector output for easy interfacing with other devices
• Internal frequency compensation for stability
• Wide operating voltage range allows for versatile applications
• Low power consumption makes it suitable for battery-powered devices

Advantages and Disadvantages

Advantages: - Accurate voltage comparison - Wide supply voltage range - Low power consumption - High-speed response - Stable operation with internal frequency compensation

Disadvantages: - Limited number of pins for additional functionalities - Not suitable for applications requiring high precision

Working Principles

LM2903D works by comparing the voltages applied to its two input pins, IN(-) and IN(+). The output pin, OUT, provides a digital signal based on the comparison result. When the voltage at IN(+) is higher than the voltage at IN(-), the output goes low (0V). Conversely, when the voltage at IN(-) is higher, the output goes high (VCC).

Application Field Plans

LM2903D finds applications in various fields, including: 1. Industrial automation systems 2. Automotive electronics 3. Battery management systems 4. Power supply monitoring 5. Sensor interfacing 6. Audio amplifiers 7. Voltage level detection

Alternative Models

Some alternative models that can be used as substitutes for LM2903D include: - LM393 - LM311 - LM339 - LM324

These models offer similar functionality and can be chosen based on specific application requirements.

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