The LT2940CDD from Linear Technology is a versatile and precise integrated circuit designed for monitoring power and current in a wide range of applications. This compact device measures both the current through and the voltage across a shunt resistor, enabling it to accurately calculate power consumption.

Key Features

• Wide Input Voltage Range: The LT2940CDD is capable of handling a broad range of input voltages, making it suitable for various systems and ensuring flexibility in design.
• High-Side Current Sense: This feature allows the LT2940CDD to measure current at any positive voltage, providing versatility and safety by keeping the ground plane uninterrupted.
• Integrated Multiplier: The onboard multiplier/divider provides direct readout of power, simplifying the design and reducing external component count.
• Bandwidth: With a wide bandwidth, the LT2940CDD can accurately track fast-changing loads, ensuring precise power monitoring.
• Low Quiescent Current: The device consumes minimal power when idle, making it ideal for power-sensitive applications.

Applications

The LT2940CDD is suitable for a variety of applications, including:

• Telecommunications
• Computing systems
• Battery management
• Industrial systems

Package Information

The device is offered in a compact DFN package, with a 10-lead (3mm x 3mm) footprint. This small form factor makes it ideal for space-constrained applications without compromising performance.

Conclusion

Overall, the LT2940CDD is a highly integrated and efficient solution for power and current monitoring. Its accuracy, bandwidth, and low power consumption, combined with a small package size, make it an excellent choice for designers looking to optimize their power management systems.