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 ST7540 Product Page
Reduced in size and pin count, the new ST7540 maintains the "core" functionalities of ST7538, without some accessory functions (like the Zero Crossing detection and the uncommitted OpAmp). As new capabilities, it integrates a single ended Power Line Interface with accessible terminals in order to be used as active filter in the signal transmission path, so reducing external components and overall application size and cost. Both 5V and 3.3V regulators are available as well as header recognition and frame length count functions. ST7540 is particularly suitable for very compact, simple and cost effective applications.
- Half duplex Frequency Shift Keying (FSK) transceiver;
- Integrated single ended power line driver with accessible input and output terminals and programmable voltage and current control;
- Freezable power amplifier output level;
- Tunable output active filtering;
- SPI/UART microcontroller interface;
- Single 7.5 to 13.5V supply voltage;
- Very low power consumption (Iq=5mA);
- Integrated 5V, 50mA linear voltage regulator;
- Integrated 3.3V, 50mA linear voltage regulator;
- 8 programmable transmission frequencies in CENELEC bands A, B and C;
- Programmable BAUD rate from 600 to 4800 bps;
- High receiver sensitivity up to 0.25mVRMS;
- Programmable carrier or preamble detection;
- Band-in-use detection;
- Secure access 48 bit control register;
- Programmable header and frame length recognition;
- Watchdog timer;
- Compliant with CENELEC EN50065 and FCC part 15 regulatory specifications;
- Compact 4.4x9.7x1mm TSSOP28 with exposed pad package.
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