LT5520 Ver la hoja de datos (PDF) - Linear Technology
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LT5520 Datasheet PDF : 12 Pages
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LT5520
DC ELECTRICAL CHARACTERISTICS
(Test Circuit Shown in Figure 2) VCC = 5VDC, EN = High , TA = 25°C (Note 3), unless otherwise noted.
PARAMETER
Enable = High (On)
Enable = Low (Off)
Power Supply Requirements (VCC)
Supply Voltage
Supply Current
Shutdown Current
CONDITIONS
VCC = 5VDC
EN = Low
MIN TYP MAX UNITS
3
VDC
0.5
VDC
4.5 to 5.25
VDC
60
70
mA
1
100
µA
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: External components on the final test circuit are optimized for
operation at fRF = 1900MHz, fLO = 1.76GHz and fIF = 140MHz.
Note 3: Specifications over the –40°C to 85°C temperature range are
assured by design, characterization and correlation with statistical process
controls.
Note 4: Turn-On and Turn-Off times are based on the rise and fall times of
the RF output envelope from full power to –40dBm with an IF input power
of –10dBm.
TYPICAL PERFOR A CE CHARACTERISTICS (Test Circuit Shown in Figure 2)
Supply Current
vs Supply Voltage
66
64
TA = 85°C
62
60
TA = 25°C
58
TA = –40°C
56
54
52
50
4.0
4.25 4.5 4.75 5.0 5.25 5.5
SUPPLY VOLTAGE (V)
5520 • GO1
Shutdown Current
vs Supply Voltage
1.0
0.9
0.8
0.7
0.6
TA = 85°C
0.5
0.4
0.3
0.2
TA = 25°C
0.1
TA = –40°C
0
4.0 4.25 4.5 4.75 5.0 5.25 5.5
SUPPLY VOLTAGE (V)
5520 • GO2
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 RF Output Frequency
18
16 HIGH SIDE LO
14
LOW SIDE LO
12
SSB NF
10
8
6
4
2
GAIN
0
LOW SIDE AND HIGH SIDE LO
–2
–4
1300
1500 1700 1900 2100 2300 2500
RF OUTPUT FREQUENCY (MHz)
5520 • GO3
IIP3 and IIP2
vs RF Output Frequency
32
55
30
50
28
LOW SIDE LO
IIP2 45
26
40
24
HIGH SIDE LO
35
22
30
20
25
IIP3
18
LOW SIDE LO
20
16
15
HIGH SIDE LO
14
10
12
1300
5
1500 1700 1900 2100 2300 2500
RF OUTPUT FREQUENCY (MHz)
5520 • GO4
LO-RF Leakage
vs RF Output Frequency
–10
–20
–30
HIGH SIDE LO
–40
–50
LOW SIDE LO
–60
1300
1500 1700 1900 2100 2300 2500
RF OUTPUT FREQUENCY (MHz)
5520 • GO5
5520f
3
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