5-36
RF2483
Rev A8 060203
*=Not tested in production
Parameter
Specification
Unit
Condition
Min.
Typ.
Max.
I/Q Modulator High Band
(2400MHz)
VCC=2.7V, EN=2.7V, Bandsel=2.7V,
FLO=0dBm, PLO=2400MHz, LO HB and
RF OUT HB ports are matched to 50
Ω.
IQ=800mVP-P at 100kHz 1.2VDC. Input IQ
signals driven differentially and in quadrature
from a 50
Ω source impedance. T
A =25
oC
Baseband Input Voltage*
1.15
1.2
1.25
V
Common mode voltage
Baseband Input Level
0.8
VPP
Measured differentially
Baseband Input Impedance*
5.5
k
Ω
Measured at 100kHz
Input Bandwidth*
50
150
MHz
I/Q source impedance 50
Ω
Sideband Suppression
30
34
dBc
GC=2.0V, no I/Q adjustment
30
37
dBc
GC=1.5V, no I/Q adjustment
38
43
dBc
GC=1.0V, no I/Q adjustment
40
47
dBc
GC=0.5V, no I/Q adjustment
Carrier Suppression
30
38
dBc
GC=2.0V, no I/Q adjustment
30
38
dBc
GC=1.5V, no I/Q adjustment
22
32
dBc
GC=1.0V, no I/Q adjustment
16
22
dBc
GC=0.5V, no I/Q adjustment
3rd Harmonic of Modulation
Suppression at FLO-3x100kHz
50
58
dBc
GC=2.0V
50
58
dBc
GC=1.5V
50
59
dBc
GC=1.0V
50
62
dBc
GC=0.5V
Baseband Inputs DC Current
Drain*
100
μA
Baseband Inputs AC Current
Drain*
100
μA
PP
Variable Gain Amplifiers
High Band (2400MHz)
VCC=2.7V, EN=2.7V, Bandsel=2.7V,
FLO=0dBm, PLO=2400MHz, 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
dB
GC=2.0V, IQ=800mVP-P at 100kHz
-10
-7
-3
dB
GC=1.5V, IQ=800mVP-P at 100kHz
-22
-18
-14
dB
GC=1.0V, IQ=800mVP-P at 100kHz
-39
-35
-30
dB
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.
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