MAX7031 Low-Cost, 308MHz, 315MHz, And 433.92MHz FSK Transceiver With Fractional-N PLL

The MAX7031 crystal-based, fractional-N transceiver is designed to transmit and receive FSK data at factory-preset Carrier frequencies of 308MHz, 315MHz, or 433.92MHz with data rates up to 33kbps (Manchester encoded) or 66kbps (NRZ encoded). This device generates a typical output power of +10dBm into a 50 load, and exhibits typical sensitivity of -110dBm. The MAX7031 features separate transmit and receive pins (PAOUT and LNAIN) and provides an internal RF Switch that CAN be used to connect the transmit and receive pins to a common Antenna
The MAX7031 transmit frequency is generated by a 16-bit, fractional-N, phase-locked loop (PLL), while the receiver's local Oscillator (LO) is generated by an integer-N PLL This hybrid architecture eliminates the need for separate transmit and receive crystal reference Oscillators because the fractional-N PLL is preset to be 10.7MHz above the receive LO. Retaining the fixed-N PLL for the receiver avoids the higher current-drain requirements of a fractional-N PLL and keeps the receiver current drain as low as possible.
The fractional-N architecture of the MAX7031 transmit PLL allows the transmit FSK signal to be preset for exact frequency deviations, and completely eliminates the problems associated with oscillator-pulling FSK signal generation. All frequency-generation components are integrated on-chip, and only a crystal, a 10.7MHz IF Filter and a few Discrete components are required to implement a complete Antenna digital data solution.
The MAX7031 is available in a small, 5mm x 5mm, 32-pin, thin QFN package, and is specified to operate in the automotive -40C to +125C temperature range.
By Maxim Integrated Products
MAX7031 's PackagesMAX7031 's pdf datasheet
MAX7031MATJ50 QFN
MAX7031LATJT QFN
MAX7031LATJ QFN
MAX7031MATJ50T QFN
MAX7031HATJ51T QFN
MAX7031HATJ51 QFN
MAX7031HATJ17T QFN
MAX7031HATJ17 QFN
MAX7031HATJ17-T QFN




MAX7031 Pinout, Pinouts
MAX7031 pinout,Pin out
This is one package pinout of MAX7031,If you need more pinouts please download MAX7031's pdf datasheet.

MAX7031 Application circuits
MAX7031 circuits
This is one application circuit of MAX7031,If you need more circuits,please download MAX7031's pdf datasheet.


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