ROHM Semiconductor LM2904 & LM2902 Ground Sense Op-Amps

Introduction

The ROHM Semiconductor LM2904 and LM2902 are specialized Ground Sense Operational Amplifiers (Op-Amps) designed to function effectively at nearly ground level for both input and output. These components are versatile and can operate on either a single or dual power supply, making them suitable for a wide range of applications.

Part Description

The LM2904 and LM2902 Op-Amps are characterized by their low input bias current of just 20nA and a maximum differential input voltage of 36V. They can withstand a maximum junction temperature of 150°C, ensuring reliability in demanding environments. These Op-Amps are AEC-Q100 qualified, which signifies their suitability for automotive applications. Their design allows for a wide operating temperature and supply voltage range, making them adaptable for various electronic systems.

Applications

• Automotive electronics
• Consumer electronics
• Engine control units
• Electric Power Steering (EPS)
• Current sensing
• Active filters

Industries

• Automotive
• Consumer Electronics
• Industrial Automation
• Robotics
• Medical Devices

Usage Ideas

1. Automotive Sensor Interface: Use the LM2904 to create a sensor interface for monitoring vehicle parameters such as temperature or pressure, ensuring accurate readings close to ground level.
2. Active Filter Design: Implement the LM2902 in an active filter circuit to enhance audio quality in consumer electronics, providing a clear and precise sound output.
3. Current Sensing Circuit: Develop a current sensing application using the LM2904 to monitor power consumption in electric vehicles, aiding in energy management and efficiency.

Conclusion

The ROHM Semiconductor LM2904 and LM2902 Ground Sense Op-Amps are robust and versatile components ideal for a variety of applications across multiple industries. Their ability to operate at low voltage levels, combined with their reliability and efficiency, makes them an excellent choice for engineers and designers looking to enhance their electronic systems. Whether in automotive electronics or consumer devices, these Op-Amps provide the performance needed for modern applications.