MAX7042(2005) View Datasheet(PDF) - Maxim Integrated
Part Name
Description
MFG CO.
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.)
SYSTEM GAIN vs. IF FREQUENCY
(1x ILNA)
50
40
UPPER SIDEBAND
30
FROM RFIN
TO MIXOUT
20
45dB IMAGE
REJECTION
fRF = 433.92MHz
10
LOWER SIDEBAND
0
SYSTEM GAIN vs. IF FREQUENCY
(2x ILNA)
60
UPPER SIDEBAND
50
40
FROM RFIN
TO MIXOUT
30
45dB IMAGE
REJECTION
fRF = 433.92MHz
20
LOWER SIDEBAND
10
0
IMAGE REJECTION vs. TEMPERATURE
(1x ILNA)
60
50 fRF = 433.92MHz
40 fRF = 315MHz
30
20
10
-10
0
5 10 15 20 25 30
IF FREQUENCY (MHz)
-10
0
5 10 15 20 25 30
IF FREQUENCY (MHz)
0
-40 -15 10 35 60 85 110
TEMPERATURE (°C)
IMAGE REJECTION vs. TEMPERATURE
(2x ILNA)
60
50 fRF = 433.92MHz
40
fRF = 315MHz
30
20
10
0
-40 -15 10 35 60 85 110
TEMPERATURE (°C)
0
-3
-6
-9
-12
-15
-18
1
NORMALIZED IF GAIN
vs. IF FREQUENCY
10
100
IF FREQUENCY (MHz)
S11 vs. RF FREQUENCY
0
-4
-8
433.92MHz
-12
-16
100
250 400 550 700 850 1000
RF FREQUENCY (MHz)
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