LTC5542 데이터 시트보기 (PDF) - Linear Technology
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LTC5542 Datasheet PDF : 16 Pages
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LTC5542
TYPICAL AC PERFORMANCE CHARACTERISTICS High-Side LO
VCC = 3.3V, VCCIF = 3.3V, SHDN = Low, TA = 25°C, PLO = 0dBm, PRF = –3dBm (–3dBm/tone for 2-tone IIP3 tests, Δf = 2MHz),
IF = 190MHz, unless otherwise noted. Test circuit shown in Figure 1.
Conversion Gain, IIP3 and NF
vs RF Frequency
27
15
25
IIP3
14
23
13
21
12
19
11
17
10
NF
15
9
13
8
11
7
9
6
GC
7
5
1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3
RF FREQUENCY (GHz)
5542 G19
1950MHz SSB Noise Figure
vs RF Blocker Level
20
RF = 1950MHz
19 BLOCKER = 1850MHz
18
17
16
15
PLO = –3dBm
14
13
PLO = 0dBm
12
11
10
9
–25
PLO = 3dBm
–20 –15 –10 –5 0
5
RF BLOCKER POWER (dBm)
5542 G20
1950MHz Conversion Gain, IIP3
and RF Input P1dB vs Temperature
26
24 IIP3
22
20
RF = 1950MHz
VCCIF = 5.0V
18
VCCIF = 3.3V
16
14
P1dB
12
10 GC
8
–45 –25 –5 15 35 55 75 95
TEMPERATURE (°C)
5542 G21
1750MHz Conversion Gain, IIP3
and NF vs LO Power
26
18
IIP3
24
16
22
14
20
12
NF
18
10
16
14
12
10 GC
8
85°C 6
25°C
–40°C 4
2
8
0
–6 –4 –2 0
2
4
6
LO INPUT POWER (dBm)
5542 G22
2-Tone IF Output Power, IM3 and
IM5 vs RF Input Power
20
10
IFOUT
0
–10
RF1 = 1949MHz
–20 RF2 = 1951MHz
–30 LO = 2140MHz
–40
–50
–60
IM3
IM5
–70
–80
–12 –9 –6 –3 0
3
6
RF INPUT POWER (dBm/TONE)
5542 G24
1950MHz Conversion Gain, IIP3
and NF vs LO Power
26
18
IIP3
24
16
22
14
20
12
NF
18
10
16
8
14
85°C 6
25°C
12
–40°C 4
10 GC
2
8
0
–6 –4 –2 0
2
4
6
LO INPUT POWER (dBm)
5542 G22b
Single-Tone IF Output Power, 2 × 2
and 3 × 3 Spurs vs RF Input Power
20
IFOUT
10 (RF = 1950MHz)
0
LO = 2140MHz
–10
–20
–30
2LO-2RF
–40 (RF = 2045MHz)
–50
–60
–70
–80
–12 –9
–6 –3
3LO-3RF
(RF = 2076.67MHz)
0 3 6 9 12 15
RF INPUT POWER (dBm)
5542 G25
2150MHz Conversion Gain, IIP3
and NF vs LO Power
25 IIP3
18
23
16
21
14
19
NF 12
17
10
15
8
13
85°C 6
25°C
11
–40°C 4
9 GC
2
7
0
–6 –4 –2 0
2
4
6
LO INPUT POWER (dBm)
5542 G23
2 × 2 and 3 × 3 Spur Suppression
vs LO Power
–50
RF = 1950MHz
PRF = –10dBm
–55
LO = 2140MHz
–60
–65
2LO-2RF
(RF = 2045MHz)
–70
–75
–80
–6
3LO-3RF
(RF = 2076.67MHz)
–4 –2 0
2
4
6
LO INPUT POWER (dBm)
5542 G26
5542f
7
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