This application note introduces the ST7538Q dual channel reference design, which is based on the ST7538Q power line FSK transceiver and can be used for automatic meter reading (AMR) nodes.
The document presents the ST7538Q dual channel reference design as a practical tool for designing automatic meter reading (AMR) nodes. It serves to evaluate the features of the ST7538Q transceiver in actual communication on power line networks, utilizing two carrier frequencies: 72 kHz and 86 kHz.
| Selectable channel frequencies | 72 kHz (CH1), 86 kHz (CH2) |
|---|---|
| AC mains voltage range | 85 V to 265 V |
| Mains frequency | 50-60 Hz |
| Output current | 600 mA |
| Output power | 5.6 W |
| Efficiency at Pout = 3.5 W | 70% |
The design supports two different carrier frequencies: 72 kHz and 86 kHz.
The power supply section operates from an AC mains voltage range of 85 V to 265 V.
The reference design provides an output current of 600 mA.