AD8340(2004) 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
PHASE SETPOINT = 135°
3
PHASE SETPOINT = 45°
2
PHASE SETPOINT = 90°
1
PHASE SETPOINT = 0°
0
–1
–2
–3
–4
–5
–6
–7
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
0.4
0.2
0.0
–0.2
–0.4
–0.6
–0.8
–1.0
–1.2
–1.4
–1.6
–1.8
–2.0
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 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
GAIN SETPOINT = 0.1
2
0
–2
–4
GAIN SETPOINT = 1.0
GAIN SETPOINT = 0.5
–6
–8
–10
–12
0
45
90 135 180 225 270 315 360
PHASE SETPOINT (Degrees)
Figure 8. Phase Error vs. Phase Setpoint at Different Gain Setpoints
Rev. 0 | Page 6 of 20
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