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LM2903N

Name: LM2903N
Rating: 4.7 (12 reviews)

IC COMPARATOR 2 GEN PUR 8DIP

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資料表 LM2903N DataSheet
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規格

Part Status	Obsolete
Type	General Purpose
Number of Elements	2
Output Type	Open-Collector, Rail-to-Rail
Voltage - Supply, Single/Dual (±)	2V ~ 36V, ±1V ~ 18V
Voltage - Input Offset (Max)	7mV @ 30V
Current - Input Bias (Max)	0.25µA @ 5V
Current - Output (Typ)	16mA @ 5V
Current - Quiescent (Max)	2.5mA
Propagation Delay (Max)	700ns
Operating Temperature	-40°C ~ 85°C
Package / Case	8-DIP (0.300", 7.62mm)
Mounting Type	Through Hole
Supplier Device Package	8-PDIP
Base Product Number	LM2903

概述

Description

The LM2903N is a dual comparator integrated circuit (IC) designed for a variety of applications, including analog signal processing and threshold detection. It features two independent, high-speed comparators that can operate from a single or dual power supply, with a voltage range typically from 2 to 36 volts.
Key specifications include a wide input common-mode voltage range and low output saturation voltage, enabling it to effectively compare two input voltages. The LM2903N is known for its fast response time (typically 1.5 microseconds) and low power consumption, making it suitable for battery-powered applications.
It is commonly used in voltage level detection, zero-crossing detection, and oscillators. The IC is available in various package types, including DIP and surface mount, facilitating easy integration into different circuit designs. Overall, the LM2903N is a versatile and reliable component for electronic projects requiring voltage comparison.

Features

The LM2903N is a dual comparator integrated circuit that features the following:
1. Dual Comparator: Contains two independent, high-gain voltage comparators.
2. Wide Supply Voltage Range: Operates from a single supply voltage of 2 to 36 V or dual supplies of ±1 V to ±18 V.
3. Low Input Offset Voltage: Offers a typical input offset voltage of 2 mV, ensuring accurate comparisons.
4. High Speed: Capable of switching at speeds up to 1.5 µs, making it suitable for fast applications.
5. Low Power Consumption: Consumes low quiescent current, enhancing battery life in portable devices.
6. Open-Collector Output: Allows for wired-AND configurations and interfacing with different voltage levels.
7. Temperature Range: Operates reliably in a temperature range from -40°C to +125°C.
8. Applications: Commonly used in signal conditioning, level detection, and window comparator circuits.
The LM2903N is versatile and widely used in various electronic applications due to its reliable performance and functionality.

Package

The LM2903N is typically available in an 8-pin dual in-line package (DIP) configuration. It can also be found in surface mount packages, such as SOIC-8 and TSSOP-8, depending on the manufacturer.

Pinout

The LM2903N is a dual comparator integrated circuit with 8 pins. Here’s the pin count and their functions:
1. Pin 1 (Output 1): Output of the first comparator.
2. Pin 2 (Inverting Input 1): Inverting input for the first comparator.
3. Pin 3 (Non-Inverting Input 1): Non-inverting input for the first comparator.
4. Pin 4 (GND): Ground connection.
5. Pin 5 (Non-Inverting Input 2): Non-inverting input for the second comparator.
6. Pin 6 (Inverting Input 2): Inverting input for the second comparator.
7. Pin 7 (Output 2): Output of the second comparator.
8. Pin 8 (Vcc): Supply voltage (positive power supply).
The LM2903N is commonly used for voltage level comparison, zero-crossing detection, and signal conditioning in various applications.

Manufacturer

The LM2903N is manufactured by Texas Instruments (TI), a leading American technology company. Founded in 1930, Texas Instruments specializes in designing and producing semiconductors and various integrated circuits, primarily for electronics and embedded systems. The LM2903N is a dual voltage comparator, widely used in various applications such as signal conditioning, data acquisition, and sensor interfacing. TI is known for its innovation in analog and embedded processing technologies, serving markets like automotive, industrial, personal electronics, and communications. The company is also recognized for its commitment to quality and reliability in its product offerings.

Application

The LM2903N is a dual comparator used in various application areas including:
1. Voltage Level Detection: For threshold sensing in circuits.
2. Oscillators: In generating square waves for timing applications.
3. Signal Conditioning: To convert analog signals into digital form.
4. Zero-Crossing Detectors: For AC signal processing.
5. Comparator Circuits: In control systems for error detection.
6. Overvoltage Protection: To monitor and protect sensitive components.
Its versatility makes it suitable for industrial, automotive, and consumer electronics.

Equivalent

The LM2903N is a dual comparator. Equivalent products include:
1. LM393
2. LMV393
3. TLC3702
4. MCP6541
These alternatives provide similar functionality, but specifications like supply voltage range and output type may vary. Always check datasheets for specific application requirements.