303 S. Technology Court, Broomfield, CO 80021
Phone: (800) SMI-MMIC
http://www.sirenza.com
5
EDS-104229 Rev B
STQ-2016-3 Direct Quadrature Modulator
Typical Device Performance Graphs
6
4
20
2
4
6
8
158
156
154
152
150
I/Q Drive = 1 Vpp, Diff.
I/Q Drive = 2 Vpp, Diff.
I/Q Drive = 3 Vpp, Diff.
I/Q Drive = 4 Vpp, Diff.
LO Drive Level (dBm)
6
4
20
2
4
6
8
15 8
15 6
15 4
15 2
15 0
I/Q Drive = 1 V pp, Diff.
I/Q Drive = 2 V pp, Diff.
I/Q Drive = 3 V pp, Diff.
I/Q Drive = 4 V pp, Diff.
LO Drive L evel (d Bm)
1
1.5
2
2.5
3
3.5
4
15 8
15 6
15 4
15 2
15 0
LO D rive = -5 dBm
LO D rive = -2 dBm
LO D rive = -1 dBm
LO D rive = +4 dB m
LO D rive = +7 dB m
IQ Drive Level (V pp, Diff.)
4.7
4.8
4.9
5
5.1
5.2
158
157.5
157
156.5
156
I/Q Drive = 1.5 Vpp, Diff.
I/Q Drive = 1.7 Vpp, Diff.
I/Q Drive = 1.9 Vpp, Diff.
Vcc (Vdc)
1.4
1.5
1.6
1.7
1.8
1.9
158
157.5
157
156.5
156
Vcc = 4.75 V
Vcc = 5.00 V
Vcc = 5.25 V
IQ Drive Level (Vpp, Diff.)
50
0
50
100
158
157.5
157
156.5
156
I/Q Drive = 1.5 Vpp, Diff.
I/Q Drive = 1.7 Vpp, Diff.
I/Q Drive = 1.9 Vpp, Diff.
Temperature (Deg. C)
1.4
1.5
1.6
1.7
1.8
1.9
158
157.5
157
156.5
156
Temp = -40 De g. C
Temp = +25 De g. C
Temp = +85 De g. C
IQ Drive Level (Vpp, Diff.)
Baseband Signal: W-CDMA Test Model 1 w/ 64 DPCH,
Peak-to-Average Ratio = 10.54
Figure 5. Broadband Noise Floor (60 MHz Offset) Vs.
Temperature, LO Drive = +4.0 dBm @ 2140 MHz.
Figure 6. Broadband Noise Floor (60 MHz Offset) Vs. I/Q Drive
Level, over Temperature, LO Drive = +4.0 dBm @ 2140 MHz.
Figure 3. Broadband Noise Floor (60 MHz Offset) Vs.
Vcc, LO Drive = +4.0 dBm @ 2140 MHz.
Figure 4. Broadband Noise Floor (60 MHz Offset) Vs. I/Q Drive
Level, over Vcc Range, LO Drive = +4.0 dBm @ 2140 MHz.
Figure 2. Broadband Noise Floor (60 MHz Offset) Vs. I/Q
Drive Level, LO Frequency = 2140 MHz.
Figure 1. Broadband Noise Floor (60 MHz Offset) Vs. LO
Drive Level, LO Frequency = 2140 MHz.
Broadband Noise Floor