5-35
RF2483
Rev A8 060203
Parameter
Specification
Unit
Condition
Min.
Typ.
Max.
Variable Gain Amplifiers
Low Band
VCC=2.7V, EN=2.7V, Bandsel=0V,
FLO=0dBm, PLO=900MHz, LO LB and RF
OUT LB ports are matched to 50
Ω. Input IQ
1.2Vdc, signals driven differentially and in
quadrature from a 50
Ω source impedance.
TA=25
oC
Gain Control Voltage Range
0
2.0
V
Gain Control Range
32
36
dB
Difference between output power at
GC=2.0V and 0.5V
Gain Control Slope
26
29.5
33
dB/V
Calculated using output power at GC=1.0V
and 1.5V
Gain Control Input Impedance*
10
k
Ω
Output Power
-3
0.8
3
dB
GC=2.0V, IQ=800mVP-P at 100kHz
-7.5
-4.5
-1.5
dB
GC=1.5V, IQ=800mVP-P at 100kHz
-24
-21
-16
dB
GC=1.0V, IQ=800mVP-P at 100kHz
-41
-35
-33
dB
GC=0.5V, IQ=800mVP-P at 100kHz
Output Noise at FLO+20MHz*
-156.4
dBm/Hz
GC=2.0V, IQ=800mVP-P at 100kHz
-157.2
dBm/Hz
GC=2.0V, IQ=0mVP-P
Output P1dB*
+6
dBm
IQ at 100kHz
Output IP3*
+19
dBm
GC=2.0V. Extrapolated from IM3 with two
baseband tones at 90kHz and 110kHz
applied differentially, in quadrature, at both I
and Q inputs, each tone 400mVP-P.
Intermodulation IM3 tone at
FLO+70kHz and
FLO+130kHz relative to tone
at FLO+90kHz
Two baseband tones at 90kHz and 110kHz
applied at both I and Q inputs, each tone
400mVP-P.
40
50
dBc
GC=2.0V
40
50
dBc
GC=1.5V
40
50
dBc
GC=1.0V
40
50
dBc
GC=0.5V
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