MAX7031 Ver la hoja de datos (PDF) - Maxim Integrated
Número de pieza
componentes Descripción
Fabricante
MAX7031
Maxim Integrated
MAX7031 Datasheet PDF : 20 Pages
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Low-Cost, 308MHz, 315MHz, and 433.92MHz
FSK Transceiver with Fractional-N PLL
Typical Operating Characteristics (continued)
(Typical Operating Circuit, VPAVDD = VAVDD = VDVDD = VHVIN = +3.0V, fRF = 433.92MHz, IF BW = 280kHz. 4kbps Manchester
encoded, 0.2% BER deviation = ±50kHz, TA = +25°C, unless otherwise noted.)
BIT-ERROR RATE
RECEIVER
vs. AVERAGE INPUT POWER
SENSITIVITY vs. TEMPERATURE
SENSITIVITY vs. FREQUENCY DEVIATION
100
-100
-94
280kHz IF BW
280kHz IF BW
280kHz IF BW
-102 0.2% BER
-96
0.2% BER
10
fRF = 434MHz
-98
-104
fRF = 434MHz
-100
1
-106
-102
0.2% BER
-108
-104
0.1
fRF = 315MHz
-110
fRF = 315MHz
-106
0.01
-116 -114 -112 -110 -108 -106 -104
AVERAGE INPUT POWER (dBm)
-112
-40 -15 10 35 60 85 110
TEMPERATURE (°C)
-108
1
10
100
FREQUENCY DEVIATION (kHz)
RSSI vs. RF INPUT POWER
1.8
1.6
1.4
1.2 HIGH-GAIN MODE
1.0
0.8
0.6
AGC SWITCH
POINT
0.4
LOW-GAIN MODE
0.2
AGC HYSTERESIS: 3dB
0
-130 -110 -90 -70 -50 -30 -10 10
RF INPUT POWER (dBm)
RSSI AND DELTA vs. IF INPUT POWER
2.1
3.5 MAX7031 toc08
1.8
2.5
1.5
RSSI
1.5
1.2
0.5
0.9
-0.5
0.6
DELTA
-1.5
0.3
-2.5
0
-90
-70 -50 -30 -10
IF INPUT POWER (dBm)
-3.5
10
FSK DEMODULATOR OUTPUT
vs. IF FREQUENCY
1.6
1.2
0.8
0.4
0
10.4 10.5 10.6 10.7 10.8 10.9 11.0
IF FREQUENCY (MHz)
SYSTEM GAIN vs. IF FREQUENCY
50
UPPER SIDEBAND
40
30
20
45dB IMAGE
REJECTION
FROM RFIN
TO MIXOUT
fRF = 434MHz
10
0
LOWER SIDEBAND
-10
-20
0
5 10 15 20 25 30
IF FREQUENCY (MHz)
IMAGE REJECTION vs. TEMPERATURE
48
fRF = 434MHz
46
fRF = 315MHz
44
42
-40 -15 10 35 60 85 110
TEMPERATURE (°C)
NORMALIZED IF GAIN vs. IF FREQUENCY
0
-4
-8
-12
-16
-20
1
10
100
IF FREQUENCY (MHz)
6 _______________________________________________________________________________________
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