onsemi

LM2901DG

LM2901DG Description

The LM2901DG from onsemi is a general-purpose quad comparator housed in a 14-SOIC surface-mount package. Designed for flexibility and reliability, this IC operates over a wide supply voltage range (3V to 36V single supply or ±1.5V to ±18V dual supply), making it suitable for diverse industrial and automotive applications. With a low input bias current (max 0.25µA @ 5V) and moderate quiescent current (max 2.5mA), it balances power efficiency and performance. The device features four independent comparators, each offering a typical output current of 16mA @ 5V and a maximum input offset voltage of 7mV @ 5V, ensuring precise signal comparison.

LM2901DG Features

• Quad Comparator Configuration: Four independent comparators in a single package, reducing board space and cost.
• Wide Voltage Range: Supports 3V–36V single supply or ±1.5V–±18V dual supply, ideal for battery-powered and industrial systems.
• Low Power Consumption: Quiescent current max 2.5mA and low input bias current (0.25µA @ 5V) enhance energy efficiency.
• High Output Drive: 16mA sink/source capability ensures robust signal driving for logic interfaces.
• Robust Packaging: 14-SOIC tube packaging with MSL 1 (unlimited) moisture sensitivity, suitable for extended storage and handling.
• REACH Unaffected: Compliant with environmental regulations, ensuring long-term availability.

LM2901DG Applications

The LM2901DG excels in precision comparison tasks across multiple industries:

• Power Management: Voltage monitoring, over/under-voltage detection in DC-DC converters.
• Automotive Systems: Window comparators for sensor thresholds, battery voltage supervision.
• Industrial Control: Limit sensing, zero-crossing detection, and motor control feedback loops.
• Consumer Electronics: Level shifting, signal conditioning in audio and display circuits.
• Battery-Powered Devices: Low-voltage detection in portable electronics due to its wide operating range.

Conclusion of LM2901DG

The LM2901DG is a versatile, cost-effective quad comparator offering wide voltage operation, low power consumption, and reliable performance. Its 4-channel integration reduces component count, while its high output drive supports direct interfacing with logic circuits. Although marked obsolete, its REACH compliance and proven design make it a dependable choice for legacy and new designs requiring robust signal comparison. Ideal for industrial, automotive, and power-sensitive applications, this IC remains a practical solution despite newer alternatives.