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RF2483
Rev A8 060203
Low Band Modulator Performance versus Frequency
LO=0dBm, VCC=2.7V, GC=2V, IQ=100kHz 800mVP-P
-70.00
-60.00
-50.00
-40.00
-30.00
-20.00
-10.00
0.00
700.0
800.0
900.0
1000.0
1100.0
1200.0
Frequency (MHz)
-70.00
-60.00
-50.00
-40.00
-30.00
-20.00
-10.00
0.00
Carrier Suppression
Sideband Suppression
3rd Harmonic of
Modulation
Output Power
Low Band Output Noise 20MHz Offset versus LO Power
VCC=2.7V, LO=900MHz, GC=2V
-158.00
-157.00
-156.00
-155.00
-154.00
-153.00
-152.00
-10.0
-8.0
-6.0
-4.0
-2.0
0.0
2.0
4.0
6.0
8.0
LO Power (dBm)
-5.0
-4.0
-3.0
-2.0
-1.0
0.0
1.0
Output Noise 20MHz
Offset,
I&Q =
800mVpp 1.2Vdc
Output Noise 20MHz
Offset,
I&Q = 0
mVpp 1.2Vdc
Output Power
I&Q=800mVpp 1.2Vdc
Low Band Output Noise at 20MHz Offset versus GC
VCC=2.7V, LO=900MHz 0dBm
-170.0
-165.0
-160.0
-155.0
-150.0
-145.0
-140.0
-135.0
-130.0
0.00.5
1.01.5
2.02.5
Gain Control (V)
-35.0
-30.0
-25.0
-20.0
-15.0
-10.0
-5.0
0.0
5.0
Output Noise 20MHz
Offset,
I&Q =
800mVpp 1.2Vdc
Output Noise 20MHz
Offset,
I&Q = 0 mVpp
1.2Vdc
Output Power
I&Q=800mVpp 1.2Vdc
Low Band Modulator Performance versus LO Power
LO=900MHz, VCC=2.7V, GC=2V, IQ=100kHz 800mVP-P
-70.00
-60.00
-50.00
-40.00
-30.00
-20.00
-10.00
0.00
-10.0
-8.0
-6.0
-4.0
-2.0
0.0
2.0
4.0
6.0
8.0
LO Power (dBm)
-70.00
-60.00
-50.00
-40.00
-30.00
-20.00
-10.00
0.00
Carrier Suppression
Sideband Suppression
3rd Harmonic of
Modulation
Output Power
Low Band Output Power versus Baseband Signal Level
VCC=2.7V, LO=900MHz, IQ=100kHz 1.2Vdc
-80.0
-70.0
-60.0
-50.0
-40.0
-30.0
-20.0
-10.0
0.0
10.0
20.0
10.0
100.0
1000.0
10000.0
Baseband Signal Level (mVpp)
GC = 2.0V
GC = 1.5V
GC = 1.0V
GC = 0.5V
Low Band Output IP3 versus Gain Control
VCC=2.7V, LO=0dBm, IQ=900kHz and 1100kHzat 1.2VDC
-40.00
-30.00
-20.00
-10.00
0.00
10.00
20.00
30.00
0.0
0.5
1.0
1.5
2.0
2.5
Gain Control (V)
700MHz
800MHz
900MHz
1000MHz
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