STMicroelectronics ST7570

Description

The ST7570 is a powerful power line networking system-on-chip. It combines a high-performance PHY processor core and a protocol controller core with a fully integrated analog front end (AFE) and line driver.
The ST7570 features allow the most cost effective, single-chip power line communication solution based on IEC61334-5-1 S-FSK standard.

Features

■ Fully integrated narrow-band power line networking system-on-chip
■ High performing PHY processor with embedded turn-key firmware for spread frequency shift keying (S-FSK) modulation:
– Programmable bit rate up to 2.4 Kbps (@ 50 Hz)
– 1 Hz step programmable carriers up to 148.5 kHz
– Signal to noise ratio estimation
– Received signal strength indication
■ Protocol engine embedding:
– IEC61334-5-1 PHY and MAC layers
– Alarm management
– Repeater Call procedure
– Intelligent search initiator process
■ On chip peripherals:
– Host controller UART interface
■ Fully integrated analog front end:
– ADC and DAC
– PGA with automatic gain control for high receiving sensitivity
– High linearity modulated signal generation
■ Fully integrated single-ended power amplifier for line driving
– Up to 1 A rms, 14 V p-p output
– Configurable Active filtering topology
– Very high linearity
– Embedded temperature sensor
– Current control feature
■ 8 to 18 V power amplifier supply
■ 3.3 V or 5 V digital I/O supply
■ Integrated 5 V and 1.8 V linear regulators for AFE and digital core supply
■ Mains zero crossing synchronization
■ Suitable for EN50065 and FCC part 15 compliant applications
■ VFQFPN48 package with exposed pad
■ -40 °C to +85 °C temperature range

Applications

■ Smart metering applications
■ Street lighting control
■ Command and control networking