MAX7042(2005) データシートの表示（PDF） - Maxim Integrated
部品番号
コンポーネント説明
メーカー
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.)
S11 SMITH PLOT OF RFIN
INPUT IMPEDANCE
vs. INDUCTIVE DEGENERATION
70
MAX7042 toc20 -150
fRF = 315MHz
60
-160
433.92MHz
50
-170
40
30
20
1
REAL IMPEDANCE
-180
IMAGINARY
IMPEDANCE
10
INDUCTIVE DEGENERATION (nH)
-190
-200
100
INPUT IMPEDANCE
vs. INDUCTIVE DEGENERATION
90
fRF = 433.92MHz
MAX7042 toc21 -100
80
70
-110
IMAGINARY
60
IMPEDANCE
-120
50
40
REAL IMPEDANCE
-130
30
20
1
10
INDUCTIVE DEGENERATION (nH)
-140
100
PHASE NOISE
vs. OFFSET FREQUENCY
-70
fRF = 315MHz
-80
fRF = 433.92MHz
-90
-100
-110
-120
-130
100
1k 10k 100k 1M 10M
OFFSET FREQUENCY (Hz)
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