78M6613-IM/F/PSU

Overview

The 78M6613-IM/F/PSU is a single-phase AC power measurement System on Chip (SoC) from the Teridian 78M6613 series, manufactured by Analog Devices Inc./Maxim Integrated. It integrates an 8-bit 80515 MPU with 2 kB XRAM and 32 kB Flash, alongside a 22-bit Delta-Sigma ADC and a 32-bit Compute Engine. The device features a 5 MHz maximum clock frequency, operates at 3.3 V, and supports UART communication via up to 10 general-purpose I/O pins. Packaged in a 32-pin QFN (5mm x 5mm), it provides hardware watchdog timing and a 32 kHz time base for precise energy metering applications.

Feature Summary

• Integrates a 22-bit Delta-Sigma ADC with an independent 32-bit compute engine for high-precision signal processing
• Includes an 8-bit 80515 microprocessor unit with integrated flash memory and in-circuit emulator interface
• Provides four sensor inputs referenced to V3P3A for flexible voltage and current sensing configurations

Applications

• Single-phase AC power measurement in smart appliances
• Embedded AC load monitoring and control systems
• Power supply implementations requiring accurate energy metering

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to limited availability status. Confirm package integrity and RoHS compliance upon receipt. Cross-reference ordering suffixes carefully as they may denote specific temperature ranges or packaging variations that do not alter core functionality but affect compatibility. Ensure design-in documentation matches the specific PSU variant requirements.

Selection Notes

Select this SoC for designs requiring high integration of metering functions within a compact QFN footprint. The inclusion of true RMS calculation firmware and digital phase compensation simplifies development compared to discrete solutions. Consider the 2000:1 dynamic current range and wide temperature stability when designing for varying load conditions. Verify UART interface compatibility with host controllers for data retrieval and configuration.

Part Context

This component belongs to the Teridian 78M6613 family of highly integrated power measurement ICs. It is designed to simplify the implementation of single-phase AC power measurement into various electronic devices. The series emphasizes space savings through its small 32-pin QFN package while maintaining accuracy over wide operating ranges.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate variants such as 78M6613-IM/F or 78M6613-IMR/F for pin-compatible alternatives, ensuring functional equivalence regarding ADC resolution and MCU architecture before substitution.