Overview
The ST7538QTR, produced by STMicroelectronics, is a Half Duplex synchronous/asynchronous FSK (Frequency Shift Keying) Modem designed specifically for power line communication network applications. This device operates from a single supply voltage ranging from 7.5V to 12.5V and integrates a line driver along with two linear regulators for 5V and 3.3V. The ST7538QTR is realized in Multipower BCD5 technology, allowing the integration of DMOS, Bipolar, and CMOS structures within the same chip. It is controlled through an internal register that is programmable via a synchronous serial interface, and it includes various additional functions such as a watchdog timer, clock output, output voltage and current control, preamble detection, time-out, and band in use detection.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | TQFP 44 10x10x1.4 | - |
| Supply Voltage | 7.5 to 12.5 | V |
| Operating Temperature | -40 to +85 | °C |
| Storage Temperature | -50 to 150 | °C |
| Baud Rate | Up to 4800 BPS | - |
| Transmission Frequencies | 8 programmable frequencies | - |
| Receiving Sensitivity | Up to 250µVrms | - |
| Power Consumption (Iq) | 5mA | - |
| Voltage Regulators | Integrated 3.3V and 5V regulators (up to 50mA each) | - |
Key Features
- Half duplex frequency shift keying (FSK) transceiver
- Integrated power line driver with programmable voltage and current control
- Programmable interface: Synchronous and Asynchronous
- UART/SPI host interface
- Suitable for applications in accordance with EN 50065 CENELEC specifications
- Carrier or preamble detection
- Band in use detection
- Mains zero crossing detection and synchronization
- Watchdog timer
- Programmable 24 or 48 bit register with security checksum
- 8 or 16 bit header recognition
- Very low power consumption (Iq = 5mA)
- Integrated 3.3V and 5V voltage regulators with short circuit protection
Applications
The ST7538QTR is designed for power line communication network applications. It is particularly suitable for systems that require reliable and efficient data transmission over power lines, such as smart grid systems, home automation, and industrial control networks. The device's compliance with EN 50065 CENELEC specifications makes it a robust choice for European power line communication standards.
Q & A
- What is the primary function of the ST7538QTR?
The ST7538QTR is a Half Duplex synchronous/asynchronous FSK Modem designed for power line communication network applications.
- What is the operating voltage range of the ST7538QTR?
The device operates from a single supply voltage ranging from 7.5V to 12.5V.
- What types of voltage regulators are integrated into the ST7538QTR?
The device 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 ST7538QTR?
The ST7538QTR supports baud rates up to 4800 BPS.
- Does the ST7538QTR support both synchronous and asynchronous interfaces?
- What is the receiving sensitivity of the ST7538QTR?
The receiving sensitivity of the ST7538QTR is up to 250µVrms.
- Does the ST7538QTR include a watchdog timer?
- What is the power consumption of the ST7538QTR in idle mode?
The power consumption (Iq) of the ST7538QTR is 5mA.
- Is the ST7538QTR compliant with any specific standards?
- What type of technology is used to manufacture the ST7538QTR?
The ST7538QTR is realized in Multipower BCD5 technology, allowing the integration of DMOS, Bipolar, and CMOS structures within the same chip.
