Datasheet

315MHz/433MHz ASK Superheterodyne
Receiver with Extended Dynamic Range
5
-20
110100
NORMALIZED IF GAIN
vs. IF FREQUENCY
-15
MAX1473 toc10
IF FREQUENCY (MHz)
NORMALIZED IF GAIN (dB)
-10
-5
0
S11 MAGNITUDE-LOG PLOT OF RFIN
MAX1473 toc11
RF FREQUENCY (MHz)
MAGNITUDE (dB)
901802604 703208 307 406 505109
-60
-50
-40
-30
-20
-10
0
10
20
30
-70
10 1000
315MHz
-34dB
S11 SMITH PLOT OF RFIN
MAX1473 toc12
600MHz
100MHz
REGULATOR VOLTAGE
vs. REGULATOR CURRENT
MAX1473 toc13
REGULATOR CURRENT (mA)
REGULATOR VOLTAGE (V)
352515
2.6
2.7
2.8
2.9
3.0
3.1
2.5
545
+105°C
+85°C
-40°C
+25°C
V
DD
= 5.0V
PHASE NOISE
vs. OFFSET FREQUENCY
OFFSET FREQUENCY (MHz)
1.E-05 1.E-04 1.E-03 1.E-02 1.E-01 1.E+00 1.E+01
PHASE NOISE (dBc/Hz)
0
-140
-120
-100
-80
-60
-20
-40
MAX1473 toc14
f
RF
= 315MHz
PHASE NOISE
vs. OFFSET FREQUENCY
OFFSET FREQUENCY (MHz)
1.E-05 1.E-04 1.E-03 1.E-02 1.E-01 1.E+00 1.E+01
PHASE NOISE (dBc/Hz)
0
-140
-120
-100
-80
-60
-20
-40
MAX1473 toc15
f
RF
= 433MHz
Typical Operating Characteristics (continued)
( Typical Application Circuit , V
DD
= 3.3V, f
RF
= 315MHz, T
A
= +25°C, unless otherwise noted.)
MAX1473
Maxim Integrated
7