78M6618-IMR/F

Overview

The Teridian 78M6618-IMR/F is a highly integrated single-chip system for independent monitoring and measurement of up to eight single-phase AC outlets. It features an 80515 core, 128 kB Flash program memory, and 4 kB data RAM. The device includes a 21-bit delta-sigma ADC, a 32-bit compute engine, and digital temperature compensation. Operating at a maximum clock frequency of 5 MHz with a 3.3 V supply, it supports UART and SPI interfaces in a QFN-68 package.

Feature Summary

• Integrates Single Converter Technology with a 21-bit delta-sigma ADC and independent 32-bit compute engine for high-precision energy calculation.
• Provides ten analog inputs for direct interfacing with voltage and current sensors across multiple channels.
• Includes an integrated LCD driver and configurable I/O pins for display output and intelligent relay control.
• Supports flexible configuration and post-processing via the embedded MPU core and extensive flash memory.

Applications

• Metered power distribution units (PDUs) for data centers
• Rack enclosures requiring individual outlet monitoring
• Intelligent power strips for grid-friendly digital homes
• Subpanels in residential or commercial electrical systems

Procurement Notes

Verify component authenticity through authorized Analog Devices distributors due to limited availability status. Confirm package integrity and moisture sensitivity handling requirements prior to assembly. Cross-reference datasheet revisions to ensure firmware compatibility with existing development tools and programming libraries.

Selection Notes

Select this model when multi-channel single-phase metering is required within a compact footprint. The integrated compute engine reduces host processor load compared to discrete solutions. Ensure application voltage ranges align with the specified 3.3 V operation and interface requirements match available UART or SPI connections.

Part Context

Part of the Teridian 78M6618 family designed for high-accuracy AC power measurement. It consolidates analog sensing, digital processing, and microcontroller functions into one IC, eliminating the need for external DSPs or complex calibration circuits typically found in traditional metering designs.

Replacement Considerations

No public confirmed substitute part numbers are documented for this specific variant.