5-34
RF2483
Rev A8 060203
Parameter
Specification
Unit
Condition
Min.
Typ.
Max.
Variable Gain Amplifiers
High Band
VCC=2.7V, EN=2.7V, Bandsel=2.7V,
FLO=0dBm, PLO=1900MHz, LO HB and
RF OUT HB ports are matched to 50
Ω. Input
IQ signals driven differentially and in quadra-
ture from a 50
Ω source impedance.
TA=25
oC
Gain Control Voltage Range
0
2.0
V
Gain Control Range
32
35
dB
Difference between output power at
GC=2.0V and GC=0.5V
Gain Control Slope
26
29
33
dB/V
Calculated GC=1.0V and 1.5V
Gain Control Input Impedance*
10
k
Ω
Output Power
-3
0.4
3
dBm
GC=2.0V, IQ=800mVP-P at 100kHz
-8
-5
-2
dBm
GC=1.5V, IQ=800mVP-P at 100kHz
-24
-20
-16
dBm
GC=1.0V, IQ=800mVP-P at 100kHz
-38
-35
-30
dBm
GC=0.5V, IQ=800mVP-P at 100kHz
Output Noise at FLO+20MHz*
-155
dBm/Hz
GC=2.0V, IQ=800mVP-P at 100kHz
-156.7
dBm/Hz
GC=2.0V, IQ=0mVP-P
Output P1dB*
+6
dBm
IQ at 100kHz
Output IP3*
+20
dBm
GC=2.0V. Extrapolated from IM3 with two
baseband tones at 90kHz applied differen-
tially, 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 differentially, in quadrature, 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
47
dBc
GC=0.5V
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