MAX7042 Maxim Integrated Products, MAX7042 Datasheet - Page 6

• Manufacturer Part Number: MAX7042
• Description: 308MHz/315MHz/418MHz/433.92MHz Low-Power FSK Superheterodyne Receiver
• Manufacturer: Maxim Integrated Products

308MHz/315MHz/418MHz/433.92MHz
Low-Power, FSK Superheterodyne Receiver
6
(Typical Application Circuit, V
deviation = ±50kHz, BER = 0.2%, T
_______________________________________________________________________________________
-10
50
40
30
20
10
0
0
SYSTEM GAIN vs. IF FREQUENCY
5
45dB IMAGE
REJECTION
60
50
40
30
20
10
IF FREQUENCY (MHz)
0
10
-40
IMAGE REJECTION vs. TEMPERATURE
(1x I
f
RF
UPPER SIDEBAND
= 433.92MHz
15
-15
LNA
f
RF
= 315MHz
f
)
RF
LOWER SIDEBAND
TO MIXOUT
FROM RFIN
20
10
DD
= 433.92MHz
TEMPERATURE (°C)
= 3.0V, f
(2x I
35
25
A
LNA
= +25°C, unless otherwise noted.)
60
)
30
RF
= 433.92MHz, IF BW = 280kHz, data rate = 4kbps Manchester encoded, frequency
85
Typical Operating Characteristics (continued)
-10
110
60
50
40
30
20
10
0
-12
-16
-4
-8
0
0
100
SYSTEM GAIN vs. IF FREQUENCY
433.92MHz
5
250
45dB IMAGE
REJECTION
S11 vs. RF FREQUENCY
IF FREQUENCY (MHz)
10
RF FREQUENCY (MHz)
400
(2x I
15
LNA
UPPER SIDEBAND
550
)
f
RF
LOWER SIDEBAND
TO MIXOUT
FROM RFIN
20
= 433.92MHz
700
-12
-15
-18
-3
-6
-9
0
25
1
850
30
1000
NORMALIZED IF GAIN
vs. IF FREQUENCY
IF FREQUENCY (MHz)
60
50
40
30
20
10
0
10
-40
IMAGE REJECTION vs. TEMPERATURE
f
RF
f
RF
= 433.92MHz
-15
= 315MHz
10
TEMPERATURE (°C)
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(1x I
35
100
LNA
60
)
85
110