5-121
RF2705
Rev A4 041026
Parameter
Specification
Unit
Condition
Min.
Typ.
Max.
Output Performance with CW Baseband Inputs
High Band Mode (DCS1800/PCS1900), cont’d
Mode=High Band FLOx1 (see Control Logic Truth Table for Mode Control Settings)
Intermodulation
Output IP3*
+20
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
FC+70kHz and FC+130kHz
relative to tones at
FC+90kHz and FC+110kHz
-53
-42
dBc
GC=2.0V
Output Performance with CW Baseband Inputs
Wideband Mode
Mode=Wideband FLOx2 (see Control Logic Truth Table for Mode Control Settings)
VGA and PA Driver
VCC=2.7V, T=+25°C, LO=975MHz to
990MHz at -10dBm, IQ=540mVP-P** at
100kHz, unless otherwise noted
Output Power W-CDMA Modu-
lated*
5
dBm
GC=2.0V, IQ=0.8VP-P at HQPSK
Output Power CW
2
5
8
dBm
GC=2.0V
Gain Control Voltage Range
0.2
2.0
V
Gain Control Range
92
dB
Difference between output power at
GC=2.0V and GC=0.2V
Gain Control Slope
73
dB/V
Calculated between GC=1.0V and 0.5V
Modulator
Sideband Suppression
-48
-30
dBc
GC=2.0V, No I/Q adjustment
*
-50
-30
dBc
GC=1.5V, No I/Q adjustment
*
-50
-30
dBc
GC=1.0V, No I/Q adjustment
*
-50
-30
dBc
GC=0.5V, No I/Q adjustment
Carrier Suppression
-42
-30
dBc
GC=2.0V, No I/Q adjustment
-41
-30
dBc
GC=1.5V, No I/Q adjustment
-38
-30
dBc
GC=1.0V, No I/Q adjustment
-23
-10
dBc
GC=0.5V, No I/Q adjustment
3rd Harmonic of Modulation
Suppression at FC-3x300kHz
-55
-50
dBc
GC=2.0V
Spurious Outputs
Spurious Output at Integer Multi-
ples of FLO LB*
GC=2.0V, I/Q=540mVP-P at 100kHz
FLO LB
-60.0
dBm
FLO LB leakage
4xFLO LB
-14.0
0
dBm
Second harmonic of carrier
6xFLO LB
-47.0
0
dBm
Third harmonic of carrier
Output Compression
Output P1dB*
+11.5
dBm
I/Q=100kHz
Intermodulation
Output IP3*
+20
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
FC+70kHz and FC+130kHz
relative to tones at
FC+90kHz and FC+110kHz
-37
dBc
GC=2.0V
-40
dBc
GC=1.5V
* Not tested in Production
** Provides the same output power as modulated signal with associated crest factor.
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