Overview
The ST7538Q, which is closely related to the ST7538P013TR, is a Half Duplex synchronous/asynchronous FSK (Frequency Shift Keying) Modem designed for power line communication network applications. It operates from a single supply voltage and integrates a line driver and two linear regulators for 5V and 3.3V. The device is controlled by an internal register, programmable through the synchronous serial interface. It is realized in Multipower BCD5 technology, allowing the integration of DMOS, Bipolar, and CMOS structures in the same chip.
Key Specifications
| Specification | Value |
|---|---|
| Package | TQFP 44 10x10x1.4 |
| Grade | Industrial |
| RoHS Compliance Grade | Ecopack2 |
| Supply Voltage | 7.5V to 12.5V |
| Digital Supply Voltage | 3.3V or 5V |
| Operating Temperature | -40°C to 85°C |
| Baud Rate | Up to 4800 BPS |
| Transmission Frequencies | 8 programmable frequencies |
| Interface | UART/SPI host interface |
| Regulators | Integrated 3.3V and 5V voltage regulators (up to 50mA each) with short circuit protection |
Key Features
- Half duplex frequency shift keying (FSK) transceiver
- Programmable baud rate up to 4800 BPS
- 8 programmable transmission frequencies
- UART/SPI host interface
- Suitable for applications in accordance with EN 50065 CENELEC specifications
- Receiving sensitivity up to 250µVrms
- Band in use detection and carrier or preamble detection
- Mains zero crossing detection and synchronization
- Programmable 24 or 48 bit register with security checksum
- Watchdog timer
- Integrated power line driver with programmable voltage and current control
- Very low power consumption (Iq = 5mA)
- 8 or 16 bit header recognition
Applications
The ST7538Q is primarily used in power line communication (PLC) network applications. It is suitable for various industrial and consumer electronics that require reliable and efficient communication over power lines, such as smart home devices, industrial automation systems, and energy management systems. The device complies with EN 50065 CENELEC specifications, making it a robust solution for European market requirements.
Q & A
- What is the primary function of the ST7538Q?
The ST7538Q is a Half Duplex synchronous/asynchronous FSK Modem designed for power line communication network applications.
- What is the operating supply voltage range of the ST7538Q?
The device operates from a single supply voltage ranging from 7.5V to 12.5V.
- What are the integrated voltage regulators in the ST7538Q?
The ST7538Q integrates 3.3V and 5V voltage regulators, each capable of supplying up to 50mA with short circuit protection.
- What is the maximum baud rate supported by the ST7538Q?
The ST7538Q supports a maximum baud rate of up to 4800 BPS.
- What interfaces does the ST7538Q support?
The device supports UART/SPI host interfaces.
- What are the key detection features of the ST7538Q?
The device includes band in use detection, carrier or preamble detection, and mains zero crossing detection and synchronization.
- Is the ST7538Q compliant with any specific standards?
Yes, it is suitable for applications in accordance with EN 50065 CENELEC specifications.
- What is the receiving sensitivity of the ST7538Q?
The receiving sensitivity is up to 250µVrms.
- Does the ST7538Q have any power-saving features?
Yes, it has very low power consumption with an Iq of 5mA.
- What is the operating temperature range of the ST7538Q?
The operating temperature range is from -40°C to 85°C.
