
315MHz Low-Power, +3V Superheterodyne
Receiver
Typical Operating Characteristics (continued)
(V DD = +3.3V, T A = +25 ° C, unless otherwise noted. Typical Application Circuit.)
NORMALIZED IF GAIN
vs. IF FREQUENCY
IMAGE REJECTION
vs. RF FREQUENCY
5
3dB BANDWIDTH = 11.7MHz
60
0
50
-5
40
-10
-15
-20
30
20
1
10
100
150
200
250
300
350
400
450
500
0dB
10dB/
IF FREQUENCY (MHz)
S11 MAGNITUDE-LOG PLOT OF RFIN
MAX1470 toc12
RF FREQUENCY (MHz)
S11 SMITH PLOT OF RFIN
315MHz
50MHz
div
315MHz,
-29.5dB
1GHz
50MHz
1GHz
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5