LT5520 データシートの表示（PDF） - Linear Technology
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LT5520 Datasheet PDF : 12 Pages
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LT5520
TYPICAL PERFOR A CE CHARACTERISTICS
VCC = 5VDC, EN = High , TA = 25°C, IF input = 140MHz at –10dBm, LO input = 1.76GHz at –5dBm, RF output measured at 1900MHz,
unless otherwise noted. For 2-tone inputs: 2nd IF Input = 141MHz at –10dBm. (Test Circuit Shown in Figure 2.)
Conversion Gain and SSB Noise
Figure vs LO Input Power
16
20
14
TA = 85°C
12
18
SSB NF
16
10
14
8
TA = 25°C
TA = –40°C 12
6
10
4
8
2 GAIN
TA = 25°C
6
TA = –40°C
0
4
–2
2
–4
TA = 85°C
0
–16 –12 –8
–4
0
4
LO INPUT POWER (dBm)
5520 • G06
IIP3 and IIP2 vs
LO Input Power
50
LOW SIDE LO
45
40
IIP2
35
HIGH SIDE LO
30
25
IIP3
20
15
10
HIGH SIDE LO
LOW SIDE LO
5
0
–16 –12
–8
–4
0
4
LO INPUT POWER (dBm)
5520 • G09
Conversion Gain vs IF Input
Power (One Input Tone)
4
3
2
1
TA = –40°C
0
TA = 25°C
–1
–2
TA = 85°C
–3
–4
–5
–6
–16
–12
–8
–4
0
4
IF INPUT POWER (dBm)
5520 • G12
4
IIP3 and IIP2 vs
LO Input Power
50
45
TA = 25°C
40
35
IIP2
30
TA = –40°C
TA = 85°C
25
IIP3
20
15
10
TA = 25°C, TA = –40°C
TA = 85°C
5
0
–16 –12
–8
–4
0
4
LO INPUT POWER (dBm)
5520 • G07
LO-RF Leakage
vs LO Input Power
–10
–20
–30
–40
TA = 25°C
–50
TA = –40°C
TA = 85°C
–60
–16
–12
–8
–4
0
4
LO INPUT POWER (dBm)
5520 • G08
RF Output Power and Output IM3 vs
IF Input Power (Two Input Tones)
10
0
TA = –40°C
–10
TA = 85°C
–20
POUT
–30
TA = 25°C
–40
–50
TA = –40°C
–60
IM3
–70
TA = 85°C
–80
–90
–16 –12
–8
–4
0
4
IF INPUT POWER (dBm/TONE)
5520 • G10
IF, LO and RF Port Return Loss
vs Frequency
0
–5
–10
–15
LO PORT
–20
IF PORT
RF PORT
–25
0
500 1000 1500 2000 2500 3000
FREQUENCY (MHz)
5520 • G13
RF Output Power and Output IM2 vs
IF Input Power (Two Input Tones)
10
0
TA = –40°C
–10
TA = 85°C
–20
POUT
–30
–40
TA = 25°C
TA = –40°C
–50
IM2
–60
TA = 85°C
TA = 25°C
–70
–80
–16
–12
–8
–4
0
4
IF INPUT POWER (dBm/TONE)
5520 • G11
Conversion Gain, IIP3 and IIP2
vs Supply Voltage
8
50
7
LOW SIDE LO
45
6
HIGH SIDE LO
40
5
IIP2 35
4
30
3
2
HIGH SIDE LO
25
IIP3 20
1
15
0
GAIN
LOW SIDE LO
–1
LOW SIDE AND HIGH SIDE LO
–2
4.0 4.25 4.5 4.75 5.0 5.25
10
5
0
5.5
SUPPLY VOLTAGE (V)
5520 • G14
5520f
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