Texas Instruments

LM2903QDR

LM2903QDR Description

The LM2903QDR is a high-performance, general-purpose linear comparator from Texas Instruments, designed for a wide range of applications in the electronics industry. This dual comparator features an output current of 20mA, making it suitable for driving a variety of loads. With a maximum quiescent current of 2.5mA, the LM2903QDR offers low power consumption, which is ideal for battery-powered applications. The device operates over a wide supply voltage range of 2V to 36V single or ±1V to 18V dual, providing flexibility in various system designs.

LM2903QDR Features

• Output Current: The LM2903QDR can deliver a typical output current of 20mA, making it suitable for driving a variety of loads.
• Low Power Consumption: With a maximum quiescent current of 2.5mA, the LM2903QDR offers low power consumption, ideal for battery-powered applications.
• Wide Supply Voltage Range: The device operates over a wide supply voltage range of 2V to 36V single or ±1V to 18V dual, providing flexibility in various system designs.
• Low Input Bias Current: The LM2903QDR has a maximum input bias current of 0.25µA at 5V, ensuring high input impedance and minimal loading effects on the input signal sources.
• Low Input Offset Voltage: The maximum input offset voltage is 7mV at 30V, providing high accuracy and stability in comparison applications.
• Moisture Sensitivity Level (MSL): The LM2903QDR has an MSL of 1 (Unlimited), indicating that it can be stored and used without any special precautions regarding moisture sensitivity.

LM2903QDR Applications

The LM2903QDR is an ideal choice for a variety of applications where high accuracy, low power consumption, and wide supply voltage range are required. Some specific use cases include:

1. Industrial Control Systems: The LM2903QDR can be used in industrial control systems for accurate comparison and control of various signals, such as temperature, pressure, and flow.
2. Battery-Powered Devices: Due to its low power consumption, the LM2903QDR is well-suited for battery-powered devices, such as portable electronics and wearables.
3. Automotive Applications: The LM2903QDR can be used in automotive applications for comparison and control of various signals, such as engine temperature, fuel level, and battery voltage.
4. Medical Devices: The LM2903QDR can be used in medical devices for accurate comparison and control of various signals, such as heart rate, blood pressure, and oxygen saturation levels.

Conclusion of LM2903QDR

The LM2903QDR is a versatile, high-performance linear comparator from Texas Instruments, offering a combination of low power consumption, wide supply voltage range, and low input offset voltage. Its unique features make it an ideal choice for a variety of applications in the electronics industry, including industrial control systems, battery-powered devices, automotive applications, and medical devices. However, it is important to note that the LM2903QDR is currently classified as obsolete, which may limit its availability and long-term support.