STMicroelectronics

LM2902N

LM2902N Description

The LM2902N from STMicroelectronics is a general-purpose quad operational amplifier housed in a 14-pin DIP package. Designed for versatility, it operates over a wide supply voltage range of 3V to 30V, making it suitable for both low-voltage and industrial applications. With a gain bandwidth product of 1 MHz and a slew rate of 0.4V/µs, it balances performance and power efficiency, drawing just 1.5mA per channel. The device features low input bias current (20 nA) and moderate input offset voltage (2 mV), ensuring reliable signal amplification in precision circuits.

LM2902N Features

• Quad Op-Amp Configuration: Integrates four independent amplifiers in a single package, reducing board space and cost.
• Wide Supply Range: Supports 3V to 30V, ideal for battery-powered and high-voltage systems.
• Low Power Consumption: 1.5mA supply current per channel enhances energy efficiency.
• Robust Output: Capable of 40mA output current per channel, driving loads like relays or small motors.
• Stable Performance: Low input bias current (20 nA) and REACH/ROHS3 compliance ensure environmental and regulatory suitability.
• Through-Hole Mounting: 14DIP package facilitates easy prototyping and repair.

LM2902N Applications

The LM2902N excels in:

• Signal Conditioning: Filtering, amplification, and buffering in sensor interfaces.
• Power Management: Voltage regulation and monitoring in industrial controls.
• Battery-Powered Devices: Portable equipment due to its low quiescent current.
• Automotive Systems: Robust performance in harsh environments (e.g., dashboard sensors).
• Consumer Electronics: Audio preamps, comparators, and waveform generators.

Conclusion of LM2902N

The LM2902N is a cost-effective, versatile quad op-amp offering a balance of performance, power efficiency, and durability. Its wide voltage range, low power draw, and compact integration make it a preferred choice for industrial, automotive, and consumer applications. While marked obsolete, it remains a reliable solution for legacy designs or projects requiring through-hole mounting. Engineers value its simplicity, robustness, and compliance with environmental standards, ensuring long-term usability in diverse circuits.