MAX7042(2005) 查看數據表（PDF） - Maxim Integrated
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MAX7042
(Rev.:2005)
(Rev.:2005)
Maxim Integrated
MAX7042 Datasheet PDF : 18 Pages
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308MHz/315MHz/418MHz/433.92MHz
Low-Power, FSK Superheterodyne Receiver
Typical Operating Characteristics (continued)
(Typical Application Circuit, VDD = 3.0V, fRF = 433.92MHz, IF BW = 280kHz, data rate = 4kbps Manchester encoded, frequency
deviation = ±50kHz, BER = 0.2%, TA = +25°C, unless otherwise noted.)
SUPPLY CURRENT vs. RF FREQUENCY
(2x ILNA)
7.5
DEEP-SLEEP CURRENT vs. TEMPERATURE
1000
BIT-ERROR RATE vs. AVERAGE INPUT POWER
(1x ILNA)
100
7.3
+125°C
7.1
+85°C
6.9
+25°C
6.7
6.5
6.3
-40°C
6.1
300 325 350 375 400 425 450
RF FREQUENCY (MHz)
800
600
VCC = +3.6V
400
VCC = +3.0V
200
VCC = +2.4V
0
-40 -15 10 35 60 85 110
TEMPERATURE (°C)
fRF = 433.92MHz
10
1
0.2% BER
0.1
fRF = 315MHz
0.01
-114 -112 -110 -108 -106 -104
AVERAGE INPUT POWER (dBm)
BIT-ERROR RATE vs. AVERAGE INPUT POWER
SENSITIVITY vs. TEMPERATURE
(2x ILNA)
(1x ILNA)
100
-103
fRF = 433.92MHz
-104
10
-105
SENSITIVITY vs. TEMPERATURE
(2x ILNA)
-106
-107
-108
1
0.2% BER
0.1
fRF = 315MHz
0.01
-117 -115 -113 -111 -109 -107
AVERAGE INPUT POWER (dBm)
SENSITIVITY
vs. FREQUENCY DEVIATION
-100
FREQUENCY DEVIATION IS
MEASURED FROM 0 TO PEAK
-102
-104
-106
-108
-110
-106
fRF = 433.92MHz
-107
-108
fRF = 315MHz
-109
-40 -15 10 35 60 85 110
TEMPERATURE (°C)
RSSI AND DELTA
vs. IF INPUT POWER
1.8
MAX7042 toc11
3
1.5
RSSI
2
1.2
1
0.9
0
0.6
-1
DELTA
0.3
-2
-109
fRF = 433.92MHz
-110
-111
fRF = 315MHz
-112
-40 -15 10 35 60 85 110
TEMPERATURE (°C)
FSK DEMODULATOR OUTPUT
vs. IF FREQUENCY
2.0
1.6
1.2
0.8
0.4
-112
1
10
100
FREQUENCY DEVIATION (kHz)
0
-90
-70 -50 -30 -10
RF INPUT POWER (dBm)
-3
10
0
10.3 10.4 10.5 10.6 10.7 10.8 10.9 11.0
IF FREQUENCY (MHz)
_______________________________________________________________________________________ 5
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