LT5500EGN Просмотр технического описания (PDF) - Linear Technology
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LT5500EGN Datasheet PDF : 12 Pages
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LT5500
ELECTRICAL CHARACTERISTICS (Test circuit shown in Figure 3 for 1.8GHz application) VCC = 3V DC,
LNA: fLNA_IN = 1.8GHz, Mixer: fMIX_IN = 1.8GHz, fLO = 1.52GHz, PLO = –10dBm, TA = 25°C, unless otherwise noted. (Notes 3, 4)
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX
LO Frequency Range (Note 4)
Matching Required
0.01 to 3.15
IF Frequency Range (Note 3)
Matching Required
10 to 450
LO-IF Isolation
36
LO-RF Isolation
36
RF-LO Isolation
40
UNITS
GHz
MHz
dB
dB
dB
(Test circuit shown in Figure 3 for 2.5GHz application) VCC = 3V DC, LNA: fLNA_IN = 2.5GHz, Mixer: fMIX_IN = 2.5GHz, fLO = 2.22GHz,
PLO = –10dBm, TA = 25°C, unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX
UNITS
LNA High Gain: EN = 1.35V, GS = 1.35V
Forward Gain
13.5
dB
Reverse Gain (Isolation)
–35
dB
Noise Figure
Input Return Loss
Terminated 50Ω Source
No External Matching
4
dB
12
dB
Output Return Loss
With External Matching
15
dB
Input 1dB Compression
– 15
dBm
Input 3rd Order Intercept
Two Tone Test, ∆f = 2MHz
– 3.5
dBm
LNA Low Gain: EN = 1.35V, GS = 0.3V
Forward Gain
– 14
dB
Reverse Gain (Isolation)
– 39
dB
Noise Figure
19
dB
Input 1dB Compression
–1
dBm
Input 3rd Order Intercept
Two Tone Test, ∆f = 2MHz
8
dBm
Mixer: EN = 1.35V, GS = 1.35V
Conversion Gain
5
dB
SSB Noise Figure
Input P1dB
Terminated 50Ω Source
9.5
dB
–11
dBm
Input 3rd Order Intercept
Two Tone Test, ∆f = 2MHz
– 2.5
dBm
LO-IF Isolation
33
dB
LO-RF Isolation
37
dB
RF-LO Isolation
32
dB
VCC = 3V DC, TA = 25°C (Note 4)
SYMBOL PARAMETER
Power Supply
VCC
ICC HG
ICC LG
ICC Off
IEN
IGS
Supply Voltage
Rx High Gain Mode
Rx Low Gain Mode
Shutdown Current
Enable Current
Gain Select Current
CONDITIONS
EN = 1.35V, GS = 1.35V
EN = 1.35V, GS = 0.3V
EN = 0.3V, GS = 0.3V
EN = 1.35V (Note 5)
GS = 1.35V (Note 6)
MIN TYP MAX
1.8 to 5.25
23
33
18
31
2
25
21
21
UNITS
V
mA
mA
µA
µA
µA
Note 1: Absolute Maximum Ratings are those values beyond which the life of
the device may be impaired.
Note 2: LO Absolute Maximum Ratings apply for each LO pin separately.
Note 3: Component values listed in Figure 3 for 1.8GHz evaluation board were
used to guarantee 1.8GHz performance.
Note 4: Specifications over the –40°C to 85°C operating temperature range
are assured by design, characterization and correlation with statistical process
controls.
Note 5: When EN ≤ 0.3V, enable current is <10µA.
Note 6: When GS ≤ 0.3V, gain select current is <10µA.
5500f
3
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