MAX7032 データシートの表示（PDF） - Maxim Integrated
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MAX7032
Maxim Integrated
MAX7032 Datasheet PDF : 32 Pages
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Low-Cost, Crystal-Based, Programmable,
ASK/FSK Transceiver with Fractional-N PLL
Typical Operating Characteristics (continued)
(Typical Application Circuit, VPAVDD = VAVDD = VDVDD = VHVIN = +3.0V, fRF = 433.92MHz, TA = +25°C, IF BW = 280kHz, data rate
= 4kbps Manchester encoded, frequency deviation = ±50kHz, BER = 0.2% average RF power, unless otherwise noted.)
FSK DEMODULATOR OUTPUT
vs. IF FREQUENCY
1.6
RECEIVER
SYSTEM GAIN vs. IF FREQUENCY
50
UPPER SIDEBAND
40
IMAGE REJECTION vs. TEMPERATURE
48
fRF = 434MHz
1.2
30
0.8
20
48dB IMAGE
REJECTION
FROM RFIN
TO MIXOUT
fRF = 434MHz
46 fRF = 315MHz
10
44
0
0.4
LOWER SIDEBAND
-10
0
10.4 10.5 10.6 10.7 10.8 10.9 11.0
IF FREQUENCY (MHz)
-20
0
5 10 15 20 25 30
IF FREQUENCY (MHz)
42
-40 -15 10 35 60 85 110
TEMPERATURE (°C)
NORMALIZED IF GAIN vs. IF FREQUENCY
0
S11 vs. RF FREQUENCY
0
S11 SMITH PLOT OF RFIN
-4
-8
-12
-16
-20
1
-6
-12
433.92MHz
434MHz
-18
400MHz 500MHz
10
IF FREQUENCY (MHz)
-24
100
200 250 300 350 400 450
RF FREQUENCY (MHz)
INPUT IMPEDANCE
vs. INDUCTIVE DEGENERATION
90
MAX7032 toc17 -220
90
fRF = 315MHz
80
-230
80
500
INPUT IMPEDANCE
vs. INDUCTIVE DEGENERATION
fRF = 434MHz
MAX7032 toc18 -150
-160
70
IMAGINARY
-240
70
IMAGINARY
-170
IMPEDANCE
IMPEDANCE
60
-250
60
-180
50
-260
50
-190
40
-270
40
-200
30
REAL IMPEDANCE
-280
30
REAL IMPEDANCE
-210
20
1
10
INDUCTIVE DEGENERATION (nH)
-290
100
20
1
10
INDUCTIVE DEGENERATION (nH)
-220
100
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