LTC2946CDE#TRPBF

Overview

The LTC2946CDE#TRPBF is a single-channel power, channel, and energy monitor manufactured by Analog Devices Inc. It operates within a common-mode voltage range of 2.7 V to 100 V and requires a supply voltage between 2.7 V and 100 V. The device draws a typical operating supply current of 700 uA. Key electrical specifications include an input offset voltage (Vos) of 77 uV and a gain error of 0.4%. It functions as a current sense amplifier with rail-to-rail input capabilities and is housed in a DFN-16 surface-mount package. The component supports an I2C interface for communication and data retrieval.

Feature Summary

• Provides comprehensive monitoring of power, channel status, and accumulated energy through a single integrated channel.
• Features high-precision measurement capabilities with low input offset voltage and minimal gain error.
• Supports wide common-mode voltage operation suitable for high-side sensing applications.
• Utilizes a standard I2C digital interface for system integration and data access.

Applications

• High-voltage power distribution systems requiring precise energy tracking
• Battery management systems for charge and discharge monitoring
• Industrial equipment power supply supervision
• Telecommunications infrastructure power monitoring

Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when sourcing components. Confirm that the 'C' grade designation meets the required temperature and accuracy specifications for your application environment. Ensure compatibility with the host controller's I2C bus voltage levels and address configuration before finalizing procurement orders.

Selection Notes

Select this component when a single-channel solution is sufficient for monitoring high-side currents up to 100 V common-mode. Consider the 700 uA supply current for low-power design constraints. Verify that the DFN-16 package footprint aligns with the PCB layout requirements. Compare against multi-channel variants if additional monitoring points are needed simultaneously.

Part Context

This part belongs to the LTC2946 family of power monitors from Analog Devices. It shares core functionality with other variants like the LTC2946HDE#PBF but differs in grading and packaging. The family is designed for accurate energy metering and power system management in demanding industrial and commercial environments.

Replacement Considerations

The LTC2946HDE#PBF serves as a verified alternative within the same family, offering similar monitoring capabilities. Check pinout compatibility and software register mapping before substitution. Other family members may offer different channel counts or packaging options depending on specific design needs.