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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