A fractional-N-PLL ASK/FSK transmitter device specifically targeted for tire pressure monitoring (TPM), remotekeyless entry, passive entry/go (PEG) and other automotive applications.The device operates at a frequency range of 300MHz to 450MHz at data rates up to 40kbit/s Manchester code with a typical 5.5dBm output power at 7.3mA. Transmitter parameters such as output power, output frequency, FSK deviation, and current consumption can be programmed using the SPI interface.The fully integrated device simplifies RF board design and lowers material costs.
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