LM2903ST

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LM2903ST

IC COMPARATOR 2 GEN PUR 8MINISO

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Thông số kỹ thuật

Part Status Active
Type Standard (General Purpose)
Number of Elements 2
Output Type Open-Collector, Rail-to-Rail
Voltage - Supply, Single/Dual (±) 2V ~ 36V, ±1 V ~ 18V
Voltage - Input Offset (Max) 7mV @ 30V
Current - Input Bias (Max) 0.25µA @ 5V
Current - Output (Typ) 16mA
Current - Quiescent (Max) 2.5mA
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-MiniSO
Base Product Number LM2903

Tổng quan

Description

The LM2903ST is a dual comparator integrated circuit (IC) designed for use in various electronic applications. It operates with a single power supply voltage ranging from 2 to 36 volts or dual supplies from ±1 to ±18 volts. Each comparator in the LM2903ST features a high input impedance and low output saturation voltage, making it suitable for interfacing with high-impedance sensors and providing reliable output signals.
This IC is commonly used in applications like voltage level detection, signal processing, and window comparators. The LM2903ST includes built-in hysteresis, which helps prevent oscillation at the output during slow input signal transitions, enhancing stability in applications.
Its temperature range extends from -40°C to +125°C, ensuring reliable performance in various environmental conditions. The LM2903ST is available in different packages, including the surface-mount SOIC-8, making it versatile for PCB designs. Overall, it is a widely utilized component in both industrial and consumer electronics for its robustness and efficiency.

Features

The LM2903ST is a dual comparator integrated circuit designed for various applications, including voltage level detection and signal conditioning. Key features include:
1. Dual Comparator: Contains two independent, high-gain, voltage comparators.
2. Wide Supply Voltage Range: Operates from 3V to 36V, accommodating various power supply configurations.
3. Low Input Offset Voltage: Typically less than 2mV, ensuring accurate comparisons.
4. Output Configuration: Open-collector outputs allow for wired-AND logic and interfacing with different voltage levels.
5. High Speed: Fast response times, typically less than 1µs, suitable for high-speed applications.
6. Temperature Range: Operates across a wide temperature range, from -40°C to +125°C.
7. Low Power Consumption: Consumes low quiescent current, making it ideal for battery-powered devices.
8. Easily Configurable: Can be used in various configurations, such as inverting or non-inverting setups.
The LM2903ST is widely used in automotive, industrial, and consumer electronics for its reliability and versatility.

Package

The LM2903ST is an integrated circuit packaged in a dual in-line package (DIP) with 8 pins. It is designed for low-voltage applications and features two voltage comparators.

Pinout

The LM2903ST is a dual comparator integrated circuit with 8 pins. Here are the pin counts and their functions:
1. Pin 1 (Output A): Output for comparator A.
2. Pin 2 (Inverting Input A): Inverting input for comparator A.
3. Pin 3 (Non-Inverting Input A): Non-inverting input for comparator A.
4. Pin 4 (Ground): Connects to the ground reference.
5. Pin 5 (Non-Inverting Input B): Non-inverting input for comparator B.
6. Pin 6 (Inverting Input B): Inverting input for comparator B.
7. Pin 7 (Output B): Output for comparator B.
8. Pin 8 (Vcc): Positive supply voltage.
The LM2903ST operates over a wide supply voltage range and is often used in applications requiring signal comparison, such as in analog-to-digital converters and voltage level monitoring.

Manufacturer

The LM2903ST is manufactured by Texas Instruments (TI), a prominent global semiconductor company. Founded in 1930, Texas Instruments designs and produces a wide range of semiconductor and integrated circuit solutions, including analog, embedded processing, and digital signal processing products. The company is well-known for its innovation in electronics and plays a significant role in various sectors, including automotive, industrial, communications, and consumer electronics. Texas Instruments is also recognized for its commitment to research and development, contributing to advancements in technology and providing a broad portfolio of products to meet diverse engineering needs.

Application

The LM2903ST is a dual comparator integrated circuit primarily used in various applications, including voltage level detection, analog signal processing, and zero-crossing detection in AC circuits. It serves in voltage comparators for comparator circuits, oscillators, and in systems requiring low-speed switching operations. Additionally, it's utilized in automotive and industrial applications for signal conditioning and monitoring systems.

Equivalent

The LM2903ST is a dual comparator. Equivalent products include:
1. LM393 (dual comparator, similar specs but not an exact drop-in replacement)
2. LM2901 (quad comparator)
3. TLC3702 (dual CMOS comparator)
4. MCP6541 (single comparator, low power)
Always check specific datasheets for compatibility and performance characteristics.

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