The SYN470R is a single chip ASK/OOK (ON -OFF Keyed) RF receiver IC. This device is a true “antenna- in to data -out” monolithic device. All RF and IF tuning are accomplished automatically within the IC which eliminates manual tuning and reduces production costs. The result is a highly reliable yet low cost solution. The SYN470R is a fully featured part in 16 -pin packaging, the SYN480R is the same part packaged in 8- pin packaging with a reduced feature set . The SYN470R provides two additional functions, (1) a Shutdown pin, which may be used to turn the device off for duty -cycled operation, and (2) a “Wake- up” output, which provides an output flag indicating wh en an RF signal is present. These features make the SYN 470R ideal for low and ultra- low power applications, such as RKE and remote controls. All IF filtering and post-detection (demodulator) data filtering is provided within the SYN470R , so no external fi lters are necessary. One of four demodulator filter bandwidths may be selected externally by the user. The SYN470R offer two modes of operation; fixed- mode (FIX) and sweep -mode (SWP). In fixed mode the SYN 470R functions as a conventional super -heterodyne receiver. In sweep mode the SYN470R sweeps a wider RF spectrum. Fixed -mode provides bet ter selectivity and sensitivity performance and sweep mode enables the SYN470R to be used with low cost, imprecise transmitters.
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