6 of 26
RF3854
Rev A1 DS070313
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
Parameter
Specification
Unit
Condition
Min.
Typ.
Max.
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
Output Performance with CW Baseband Inputs
Low Band Mode (GSM850/GSM900)
Mode=Low Band FLOx1 (see Control Logic Truth Table for Mode Control
Settings)
VGA and PA Driver
VCC=2.7V, T=+25°C,
LO=824MHz to 915MHz at 0dBm,
IQ=800mVP-P** at 100kHz,
unless otherwise noted
Output Power 8PSK Modulated*
+2.5
dBm
GC=2.0V, IQ=1.2VP-P 8PSK
Output Power CW
0
2.2
+5
dBm
GC=2.0V, IQ=800mVP-P at 100kHz
-1.2
dBm
GC=1.5V, IQ=800mVP-P at 100kHz
*
-13.5
dBm
GC=1.0V, IQ=800mVP-P at 100kHz
-30
dBm
GC=0.5V, IQ=800mVP-P at 100kHz
-44
-40
-37
dBm
GC=0.2V, IQ=800mVP-P at 100kHz
Gain Control Voltage Range
0.2
2.0
V
Gain Control Range
42
dB
Difference between output power at GC=2.0V
and GC=0.2V
Gain Control Slope
28
dB/V
Calculated between GC=0.5V and 1.5V
Modulator
Sideband Suppression
-36
-30
dBc
GC=2.0V, No I/Q adjustment
*
-36
-30
dBc
GC=1.5V, No I/Q adjustment
*
-36
-30
dBc
GC=1.0V, No I/Q adjustment
*
-36
-30
dBc
GC=0.5V, No I/Q adjustment
*
-36
-30
dBc
GC=0.2V, No I/Q adjustment
Carrier Suppression
-44
-34
dBc
GC=2.0V, No I/Q adjustment
-44
-34
dBc
GC=1.5V, No I/Q adjustment
*
-44
-34
dBc
GC=1.0V, No I/Q adjustment
-44
-34
dBc
GC=0.5V, No I/Q adjustment
-40
-34
dBc
GC=0.2V, No I/Q adjustment
3rd Harmonic of Modulation
Suppression at FC-3x300kHz
-49
-40
dBc
GC=2.0V
* Not tested in Production
** Provides the same output power as modulated signal with associated crest factor.
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