RFMD2081 Datasheet, PDF (17/18 Pages) RF Micro Devices – 45MHz TO 2700MHz IQ MODULATOR WITH SYNTHESIZER/VCO

RFMD2081
Typical Performance Characteristics: IQ Modulator
V_DD = +3V and T_A = +27°C unless stated otherwise, as measured on RFMD2081 evaluation board. I and Q input
level 1V_P-P differential with +1.3V DC bias.
Modulator Input Voltage For 1dB Compression
Vs Temperature & Supply Voltage
-40DegC, +2.7V
2.50
-40DegC, +3.0V
-40DegC, +3.3V
+27DegC, +2.7V
2.25
+27DegC, +3.0V
+27DegC, +3.3V
+85DegC, +2.7V
2.00
+85DegC, +3.0V
+85DegC, +3.3V
1.75
1.50
1.25
-120.0
-130.0
-140.0
-150.0
-160.0
1.00
0.0
500.0
Modulator Output Noise Floor
1MHz Offset
-40DegC, +2.7V
-40DegC, +3.0V
-40DegC, +3.3V
+27DegC, +2.7V
+27DegC, +3.0V
+27DegC, +3.3V
+85DegC, +2.7V
+85DegC, +3.0V
+85DegC, +3.3V
1000.0
1500.0
2000.0
2500.0
Output Frequency (MHz)
3000.0
-120.0
-130.0
-140.0
-150.0
Modulator Output Noise Floor
5MHz Offset
-40DegC, +2.7V
-40DegC, +3.0V
-40DegC, +3.3V
+27DegC, +2.7V
+27DegC, +3.0V
+27DegC, +3.3V
+85DegC, +2.7V
+85DegC, +3.0V
+85DegC, +3.3V
-160.0
-170.0
0.0
500.0
1000.0
1500.0
2000.0
Output Frequency (MHz)
2500.0
3000.0
-170.0
0.0
500.0
1000.0
1500.0
2000.0
2500.0
Output Frequency (MHz)
3000.0
Effect of Attenuator Setting on Modulator
Unadjusted, Output Frequency = 1500MHz
0.0
130.0
-10.0
120.0
-20.0
110.0
-30.0
100.0
-40.0
90.0
-50.0
-60.0
-70.0
0
Wanted Signal dBm
LO Suppression dBc
Sideband Suppresion dBc
IM3 Product dBc
Current mA
1
2
Modulator Attenuator Setting (mod)
80.0
70.0
60.0
3
Effect of Attenuator Setting on Gain & Linearity
Output Frequency = 1500MHz
10.0
120.0
5.0
115.0
0.0
110.0
-5.0
105.0
-10.0
100.0
-15.0
-20.0
-25.0
-30.0
0
Wanted Signal dBm
Output IP3 dBm
Output P1dB dBm
Current mA
1
2
Modulator Attenuator Setting (mod)
95.0
90.0
85.0
80.0
3
DS140110
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at ([phone] or [e-mail].
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