LT5521 データシートの表示（PDF） - Linear Technology
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LT5521 Datasheet PDF : 16 Pages
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LT5521
TYPICAL AC PERFOR A CE CHARACTERISTICS fLO = 1001MHz, fIF = 44MHz, fRF = 1045MHz,
PLO = –5dBm, VCC = 5V, EN = 2.9V, TA = 25°C, unless otherwise noted. Test circuit shown in Figure 1 is tuned for 1.045GHz output
frequency.
Noise Figure vs LO Power
20
19
18
17
16
85°C
15
25°C
14
13
–40°C
12
11
10
–20 –15 –10 –5
0
5
LO POWER (dBm)
5521 G23
Low Side LO (LS) and High Side
LO (HS) Comparison: Conversion
Gain and IIP3 vs RF Frequency
4
fIF = 44MHz
3
25
LS
24
HS
IIP3
2
23
1
22
0
GC
–1
LS
21
HS
20
–2
940
990
1040
1090
RFOUT (MHz)
19
1140
5521 G34
Low Side LO (LS) and High Side
LO (HS) Comparison: Noise Figure
vs RF Frequency
14.0
fIF = 44MHz
13.5
13.0
HS
12.5
LS
12.0
11.5
11.0
945 985 1025 1065 1105 1145
RFOUT (MHz)
5521 G24
fLO = 1.7GHz, fIF = 250MHz, fRF = 1.95GHz, PLO = –5dBm, VCC = 3.3V, EN = 2.9V, TA = 25°C, unless otherwise noted. Test circuit
shown in Figure 1 is tuned for 1.95GHz output frequency and VCC = 3.3V.
POUT, IM3 and IM2 vs Input Power
20
0
POUT
IM3
–20
–40
IM2
–60
IM2
–80
IM3
–100
–14 –12 –10 –8 –6 –4 –2 0
PIN (dBm)
85°C
25°C
–40°C
246
5521 G25
Conversion Gain vs Input Power
0.5
–40°C
0
–0.5
25°C
–1.0
85°C
–1.5
–2.0
–2.5
–20 –15 –10 –5 0
PIN (dBm)
5 10
5521 G26
Conversion Gain and IIP3
vs RF Frequency
10
27
8
25
IIP3
6
23
4
85°C
21
25°C
2
–40°C
19
GC
0
17
–2
15
–4
13
1750 1800 1850 1900 1950 2000 2050 2100 2150
RFOUT (MHz)
5521 G27
5521f
7
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