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LM2903A-VR

Name: LM2903A-VR
Rating: 4.7 (12 reviews)

GENERAL PURPOSE COMPARATOR, OPEN

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規格

Part Status	Active
Type	Differential
Number of Elements	2
Output Type	Open-Collector, CMOS, TTL
Voltage - Supply, Single/Dual (±)	2.5V ~ 36V
Voltage - Input Offset (Max)	6mV @ 5V
Current - Input Bias (Max)	0.001µA @ 5V
Current - Output (Typ)	15mA
Current - Quiescent (Max)	300µA
Operating Temperature	-40°C ~ 125°C
Package / Case	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Mounting Type	Surface Mount
Supplier Device Package	8-MSOP

概述

Description

The LM2903A-VR is a dual comparator integrated circuit (IC) designed for various applications, including voltage level detection, signal conditioning, and analog signal processing. It features two independent comparators with an open-collector output, allowing for easy interfacing with different voltage levels.
The LM2903A operates from a wide supply voltage range of 2 to 36 volts, making it adaptable for low- and high-voltage applications. Its input voltage range can go from the negative supply voltage to +36 V, and it has a fast response time, with a propagation delay typically around 300 ns.
The IC is characterized by low input offset voltage and low power consumption, making it suitable for battery-operated devices and precision applications. It comes in various package types, including DIP and surface mount, facilitating integration into different designs. Its versatility and reliability make it a popular choice among engineers for comparator-based circuits.

Features

The LM2903A-VR is a dual comparator integrated circuit designed for various analog signal processing applications. Key features include:
1. Dual Comparator: Contains two independent, high-speed comparators.
2. Wide Supply Voltage Range: Operates from a single supply voltage of 2V to 36V or dual supplies of ±1V to ±18V.
3. Low Input Offset Voltage: Typically 2 mV, ensuring high accuracy in signal comparison.
4. High Speed: Slew rate of 0.3 V/µs for fast response to input changes.
5. Open-Collector Output: Allows flexibility in interfacing with different voltage levels and enables wired-AND configurations.
6. Low Power Consumption: Quiescent current of around 400 µA per comparator.
7. Temperature Range: Operates effectively over a wide temperature range of -40°C to +125°C.
8. Hysteresis Capability: Can be configured for positive feedback to improve stability.
These features make the LM2903A-VR suitable for applications in precision voltage level detection, signal conditioning, and other analog circuit designs.

Package

The LM2903A-VR is typically available in an 8-pin dual in-line package (DIP) or an 8-pin surface mount package (SOIC). The specific package type can vary depending on the manufacturer, but the 'VR' suffix often indicates a specific version of the device. Always check the datasheet for precise packaging details.

Pinout

The LM2903A-VR is a dual comparator integrated circuit (IC) with a total of 8 pins.
Pin Configuration and Functions:
1. Pin 1 (Output 1) - The output of comparator 1.
2. Pin 2 (Inverting Input 1) - Inverting input for comparator 1.
3. Pin 3 (Non-inverting Input 1) - Non-inverting input for comparator 1.
4. Pin 4 (V-) - Negative supply voltage (ground).
5. Pin 5 (Non-inverting Input 2) - Non-inverting input for comparator 2.
6. Pin 6 (Inverting Input 2) - Inverting input for comparator 2.
7. Pin 7 (Output 2) - The output of comparator 2.
8. Pin 8 (V+) - Positive supply voltage.
The LM2903A-VR operates over a wide voltage range and is commonly used in applications requiring signal comparison, such as in analog-to-digital conversion and voltage level detection.

Manufacturer

The LM2903A-VR is manufactured by Texas Instruments (TI), a renowned semiconductor company. Founded in 1930, Texas Instruments specializes in designing and manufacturing a wide range of analog and digital semiconductor devices, including integrated circuits (ICs), microcontrollers, and processors. The company is a leader in the development of innovative technologies for various applications, including automotive, industrial, communications, and consumer electronics. TI is well-known for its commitment to quality and reliability in electronic components, making it a preferred choice for engineers and designers worldwide.

Application

The LM2903A-VR is a dual voltage comparator used in various applications, including:
1. Signal Conditioning: To compare input signals and generate output based on thresholds.
2. Zero Crossing Detectors: For detecting when a waveform crosses zero voltage.
3. Level Shifting: To convert signals between different voltage levels.
4. Window Comparators: For monitoring if a signal falls within a specified range.
5. Overvoltage/Undervoltage Protection: To trigger alerts or shutdowns in power supplies.
Its versatility makes it suitable for analog signal processing in various electronic devices.

Equivalent

Equivalent products to the LM2903A-VR chip include the LM393, LM2901, LTC6700, and the MCP602. These alternatives are dual comparator devices with similar functionality and specifications. Always check datasheets for specific characteristics and compatibility to ensure proper substitution in your application.