ST75MM

Overview

The ST75MM is a System on Chip for power line communication, compliant with the METERS AND MORE standard. It integrates a configurable DSP core for PHY processing, an 8-bit protocol engine, and a fully integrated analog front end (AFE) with a single-ended power amplifier. The device supports B-PSK modulation at 4.8 kbps, with optional Q-PSK and 8-PSK modes up to 28.8 kbps. It features AES-128 encryption, automatic gain control, and peak noise avoidance. Operating from an 8 to 18 V supply, it provides up to 1 A rms output in a 48-VFQFPN package.

Feature Summary

• METERS AND MORE compliant SoC integrating PHY processor, protocol controller, and analog front end
• Configurable DSP core supporting B-PSK, Q-PSK, and 8-PSK modulations up to 28.8 kbps
• Fully integrated AFE with PGA, ADC/DAC, and single-ended power amplifier delivering up to 1 A rms
• Embedded AES-128 encryption engine and turnkey data link layer

Applications

• Smart Grid solutions
• CENELEC EN50065 compliant applications
• ARIB compliant applications
• FCC part 15 compliant applications

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to confirm exact pinout, temperature range, and packaging configuration. Ensure the selected variant matches the required regulatory compliance standards for the target deployment region.

Selection Notes

Select based on required modulation speed; standard mode uses B-PSK at 4.8 kbps, while high-speed modes utilize Q-PSK or 8-PSK up to 28.8 kbps. Confirm compatibility with the host controller UART interface speed of up to 57.6 kbps and verify that the 8 to 18 V power amplifier supply aligns with the system design.

Part Context

This component belongs to the ST75 series of power line communication devices from STMicroelectronics. It is designed as a compact, cost-effective solution for smart grid networks, distinguishing itself through full integration of the analog front end and line driver within a single chip.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.