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Preliminary
5-38
RF2484
Rev A2 010829
5
RF2484 Cellular CDMA Spectra at Various Output Levels
(ACPR @ 885kHz, Vcc = 5.0V, Vref = 4.1V, T = 25°C)
-100
-90
-80
-70
-60
-50
-40
-30
-20
877.5
878
878.5
879
879.5
880
880.5
881
881.5
882
882.5
Frequency (MHz)
CP = -10.6 dBm;
ACPR = -70 dBc
CP = -12.0 dBm;
ACPR = -72 dBc
CP = -14.7 dBm;
ACPR = -73 dBc
CP = -9.5 dBm;
ACPR = -68 dBc
Note: Below ~-90dBm,
test setup noise inhibits accurate
ACP measurement.
RF2484 Output Power versus I, Q Input Voltage Level
(Vcc = 5.0V, Vref = 4.1V, T = 25°C, Single Sideband)
-20
-15
-10
-5
0
5
0
200
400
600
800
1000
1200
1400
1600
I, Q Input Voltage Level (mVp)
880 MHz
1960 MHz
2140 MHz
RF2484 PCS CDMA Spectra at Various Output Levels
(ACPR @ 885 kHz, Vcc = 5.0V, Vref = 4.1V, T = 25°C)
-100
-90
-80
-70
-60
-50
-40
-30
-20
1957.5 1958 1958.5 1959 1959.5 1960 1960.5 1961 1961.5 1962 1962.5
Frequency (MHz)
CP = -12.9 dBm;
ACPR = -72 dBc
CP = -14.3 dBm;
ACPR = -73 dBc
CP = -11.1 dBm;
ACPR = -71 dBc
RF2484 Output Channel Power vs I, Q Input Voltage Level
(Vcc = 5.0V, Vref = 4.1V, T = 25°C, CDMA/W-CDMA Mod.)
-30
-25
-20
-15
-10
-5
250
500
750
1000
1250
1500
1750
2000
2250
2500
I, Q Input Voltage Level (mVpp)
880 MHz CDMA Signal
1960 MHz CDMA Signal
2140 MHz W-CDMA Signal
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