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Partname: | MAX7032ATJ+T |
Description: | Low-Cost, Crystal-Based, Programmable, ASK/FSK Transceiver with Fractional-N PLL. Lead-free |
Manufacturer: | Maxim Integrated Products |
Datasheet: | PDF (449K). Click here to download *) |
The MAX7032 transmit frequency is generated by a 16bit, 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 allows the transmit frequency to be set within 2kHz of the receive frequency. The 12-bit resolution of the fractional-N PLL allows frequency multiplication of the crystal frequency in steps of fXTAL / 4096. 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 MAX7032 transmit PLL allows the transmit FSK signal to be programmed 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 MAX7032 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. |
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Click here to download MAX7032ATJ+T Datasheet*) |
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