AD8340 Просмотр технического описания (PDF) - Analog Devices
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AD8340 Datasheet PDF : 20 Pages
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AD8340
TYPICAL PERFORMANCE CHARACTERISTICS
0
PHASE SETPOINT = 0°
–5
PHASE SETPOINT = 90°
–10
–15
PHASE SETPOINT = 270°
–20
–25
–30
–35
–40
0
PHASE SETPOINT = 180°
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 = 880 MHz
4
3
2
1
0
–1
–2
–3
–4
–5
–6
–7
0
PHASE SETPOINT = 135°
PHASE SETPOINT = 45°
PHASE SETPOINT = 90°
PHASE SETPOINT = 0°
PHASE SETPOINT = 315°
PHASE SETPOINT = 270°
PHASE SETPOINT = 180°
PHASE SETPOINT = 225°
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
0
–2
–4
–6
–8
–10
–12
–14
–16
–18
–20
–22
–24
0
GAIN SETPOINT = 1.0
GAIN SETPOINT = 0.5
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
Data Sheet
0.4
0.2
0.0
GAIN SETPOINT = 1.0
–0.2
–0.4
–0.6
–0.8
GAIN SETPOINT = 0.5
–1.0
–1.2
–1.4
–1.6
GAIN SETPOINT = 0.1
–1.8
–2.0
0
45
90 135 180 225 270 315 360
PHASE SETPOINT (Degrees)
Figure 6. Gain Conformance Error vs. Phase Setpoint at Different Gain
Setpoints
360
330
300
270
GAIN SETPOINT = 1.0
240
210
180
150 GAIN SETPOINT = 0.1
120
GAIN SETPOINT = 0.5
90
60
30
0
0 30 60 90 120 150 180 210 240 270 300 330 360
PHASE SETPOINT (Degrees)
Figure 7. Phase vs. Phase Setpoint at Different Gain Setpoints
6
4
2
0
–2
–4
–6
–8
–10
–12
0
GAIN SETPOINT = 0.1
GAIN SETPOINT = 0.5
GAIN SETPOINT = 1.0
45
90 135 180 225 270 315 360
PHASE SETPOINT (Degrees)
Figure 8. Phase Error vs. Phase Setpoint at Different Gain Setpoints
Rev. C | Page 6 of 20
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