LTC5542 查看數據表（PDF） - Linear Technology
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LTC5542 Datasheet PDF : 16 Pages
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LTC5542
AC ELECTRICAL CHARACTERISTICS VCC = 3.3V, VCCIF = 3.3V, SHDN = Low, TA = 25°C, PLO = 0dBm,
PRF = –3dBm (Δf = 2MHz for two-tone IIP3 tests),unless otherwise noted. Test circuit shown in Figure 1. (Notes 2, 3, 4)
Low-Side LO Downmixer Application: RF = 1900 to 2700MHz, IF = 190MHz, fLO = fRF–fIF
PARAMETER
CONDITIONS
Conversion Gain
RF = 2150MHz
RF = 2400MHz
RF = 2650MHz
Conversion Gain Flatness
RF = 2350 ±30MHz, LO = 2160MHz, IF=190 ±30MHz
Conversion Gain vs Temperature
Input 3rd Order Intercept
TA = –40ºC to +85ºC, RF = 2400MHz
RF = 2150MHz
RF = 2400MHz
RF = 2650MHz
SSB Noise Figure
RF = 2150MHz
RF = 2400MHz
RF = 2650MHz
MIN
TYP
MAX UNITS
8.5
6.5
8.0
dB
7.4
±0.15
dB
–0.006
dB/°C
27.2
24.0
26.8
dBm
25.3
9.9
9.9
dB
10.2
SSB Noise Figure Under Blocking
fRF = 2400MHz, fLO = 2210MHz,
fBLOCK = 2500MHz, PBLOCK = 5dBm
17.3
dB
2RF – 2LO Output Spurious Product
(fRF = fLO + fIF/2)
fRF = 2305MHz at –10dBm, fLO = 2210MHz, fIF = 190MHz
–62
dBc
3RF – 3LO Output Spurious Product
fRF = 2273.33MHz at –10dBm, fLO = 2210MHz, fIF = 190MHz
–73
dBc
(fRF = fLO + fIF/3)
Input 1dB Compression
RF = 2400MHz, VCCIF = 3.3V
RF = 2400MHz, VCCIF = 5V
11.3
dBm
14.7
High-Side LO Downmixer Application: RF = 1600-2300MHz, IF = 190MHz, fLO = fRF+fIF
PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
Conversion Gain
RF = 1750MHz
RF = 1950MHz
RF = 2150MHz
8.8
6.5
8.5
dB
8.0
Conversion Gain Flatness
RF = 1950MHz ±30MHz, LO = 2140MHz, IF = 190 ±30MHz
±0.20
dB
Conversion Gain vs Temperature
TA = –40°C to 85°C, RF = 1950MHz
–0.006
dB/°C
Input 3rd Order Intercept
RF = 1750MHz
RF = 1950MHz
RF = 2150MHz
25.1
23.0
25.2
dBm
24.6
SSB Noise Figure
RF = 1750MHz
RF = 1950MHz
RF = 2150MHz
9.0
9.4
11.0
dB
10.3
SSB Noise Figure Under Blocking
2LO – 2RF Output Spurious Product
(fRF = fLO – fIF/2)
3LO – 3RF Output Spurious Product
(fRF = fLO – fIF/3)
Input 1dB Compression
fRF = 1950MHz, fLO = 2140MHz, fIF = 190MHz
fBLOCK = 1850MHz, PBLOCK = 5dBm
fRF = 2045MHz at –10dBm, fLO = 2140MHz
fIF = 190MHz
fRF = 2076.67MHz at –10dBm, fLO = 2140MHz
fIF = 190MHz
RF = 1950MHz, VCCIF = 3.3V
RF = 1950MHz, VCCIF = 5V
17.5
dB
– 67
dBc
– 73
dBc
11.0
dBm
14.4
5542f
3
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