AD8341 Datasheet, PDF (6/20 Pages) Analog Devices – 1.5 GHz to 2.4 GHz RF Vector Modulator

AD8341
TYPICAL PERFORMANCE CHARACTERISTICS
0
PHASE SETPOINT = 0°
–5
PHASE SETPOINT = 270°
–10
–15
PHASE SETPOINT = 180°
–20
PHASE SETPOINT = 90°
–25
–30
–35
–40
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
GAIN SETPOINT
Figure 3. Gain Magnitude vs. Gain Setpoint at Different
Phase Setpoints, RF Frequency = 1900 MHz
6
PHASE SETPOINT = 315°
5
4
PHASE SETPOINT = 270°
3
PHASE SETPOINT = 0°
2
PHASE SETPOINT = 45°
1
0
–1
PHASE SETPOINT = 225°
–2
–3
–4
PHASE SETPOINT = 90°
PHASE SETPOINT = 180°
–5
–6
–7
–8
0
PHASE SETPOINT = 135°
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
GAIN SETPOINT
Figure 4. Gain Conformance Error vs. Gain Setpoint at
Different Phase Setpoints, RF Frequency = 1900 MHz
–2
–4
–6
–8
–10
–12
–14
–16
–18
–20
–22
–24
–26
–28
0
GAIN SETPOINT = 1.0
GAIN SETPOINT = 0.5
GAIN SETPOINT = 0.25
GAIN SETPOINT = 0.1
45
90 135 180 225 270 315 360
PHASE SETPOINT (Degrees)
Figure 5. Gain Magnitude vs. Phase Setpoint at Different
Gain Setpoints, RF Frequency = 1900 MHz
1.0
GAIN SETPOINT = 1.0
0.5
GAIN SETPOINT = 0.5
0
–0.5
–1.0
–1.5
–2.0
GAIN SETPOINT = 0.25
–2.5
–3.0
–3.5
GAIN SETPOINT = 0.1
–4.0
–4.5
0
45
90 135 180 225 270 315 360
PHASE SETPOINT (Degrees)
Figure 6. Gain Conformance Error vs. Phase Setpoint at
Different Gain Setpoints, RF Frequency = 1900 MHz
360
315
GAIN SETPOINT = 0.25
270
GAIN SETPOINT = 0.5
225
GAIN SETPOINT = 0.1
180
GAIN SETPOINT = 1.0
135
90
45
0
0
45
90 135 180 225 270 315 360
PHASE SETPOINT (Degrees)
Figure 7. Phase vs. Phase Setpoint at
Different Gain Setpoints, RF Frequency = 1900 MHz
25
GAIN SETPOINT = 0.1
20
15
GAIN SETPOINT = 0.25
10
5
0
GAIN SETPOINT = 0.5
GAIN SETPOINT = 1.0
–5
–10
–15
0
45
90 135 180 225 270 315 360
PHASE SETPOINT (Degrees)
Figure 8. Phase Error vs. Phase Setpoint at Different Gain Setpoints,
RF Frequency = 1900 MHz
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