315MHz/434MHz Low-Power, 3V/5V
ASK/FSK Superheterodyne Receiver
Typical Operating Characteristics (continued)
(Typical Application Circuit, V AVDD = V DVDD = V HVIN = +3.0V, f RF = 434MHz, T A = +25°C, unless otherwise noted.)
FSK DEMODULATOR OUTPUT
SYSTEM VOLTAGE GAIN
RSSI AND DELTA vs. IF INPUT POWER
vs. IF FREQUENCY
vs. IF FREQUENCY
2.1
MAX1471 toc10
3.5
2.0
60
UPPER SIDEBAND
1.8
1.5
RSSI
2.5
1.5
1.6
50
40
1.2
0.9
0.5
-0.5
1.2
0.8
30
20
45dB IMAGE
REJECTION
FROM RFIN
TO MIXOUT
f RF = 434MHz
0.6
0.3
0
DELTA
-1.5
-2.5
-3.5
0.4
0
10
0
-10
LOWER SIDEBAND
-90
-70
-50
-30
-10
10
10.4
10.5
10.6
10.7
10.8
10.9
11.0
0
5
10
15
20
25
30
48
RF INPUT POWER (dBm)
IMAGE REJECTION
vs. TEMPERATURE
5
IF FREQUENCY (MHz)
NORMALIZED IF GAIN
vs. IF FREQUENCY
IF FREQUENCY (MHz)
S11 LOG-MAGNITUDE PLOT WITH
MATCHING NETWORK OF RFIN (434MHz)
46
44
42
40
f RF = 434MHz
f RF = 315MHz
0
-5
-10
-15
10dB/
div
0dB
434MHz
0dB
-16.4dB
38
-20
-40
-15
10
35
60
85
110
1
10
100
START: 50MHz
STOP: 1GHz
TEMPERATURE ( ° C)
IF FREQUENCY (MHz)
S11 SMITH CHART OF RFIN (434MHz)
MAX1471 toc16
500MHz
200MHz
6
_______________________________________________________________________________________
相关PDF资料
MAX1472EVKIT-433# EVAL KIT MAX1472
MAX1473EVKIT-433 EVAL KIT MAX1473
MAX1479EVKIT-315 EVAL KIT FOR MAX1479 315MHZ
MAX19700EVKIT EVAL KIT FOR MAX19700
MAX19985AETX+T IC MIXER DOWNCONV 36-TQFN-EP
MAX19993ETX+ IC MIXER DOWNCONV 36TQFN
MAX19994AEVKIT# KIT EVAL FOR MAX19994A MIXER
MAX19995ETX+T IC DOWNCONVERTER 2CH 36TQFN
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