AD8349 查看數據表（PDF） - Analog Devices
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AD8349 Datasheet PDF : 28 Pages
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AD8349
–10
–15
SSB, dBm
–20
10
3USB, dBc
8
6
–25
4
–30
2
–35
0
–40
USB, dBC
–2
–45
–4
–50
–6
LO, dBm
–55
–8
–60
–10
–65
–12
–70
–14
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0
BASEBAND DIFFERENTIAL INPUT VOLTAGE (V p-p)
Figure 19. Third Order Distortion (3USB), Carrier Feedthrough, Sideband
Suppression, and SSB POUT vs. Baseband Differential Input Level
(FLO = 900 MHz, FBB = 1 MHz, I and Q Inputs Driven in Quadrature, TA = 25°C)
–10
10
–15
8
SSB, dBm
–20
6
–25
4
–30
2
–35
LO, dBm
0
–40
–2
–45
–4
–50
USB, dBc
–6
3USB, dBc
–55
–8
–60
–10
–65
–12
–70
–14
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0
BASEBAND DIFFERENTIAL INPUT VOLTAGE (V p-p)
Data Sheet
160
155
150
145
VS = 5V
140
VS = 5.25V
135
130
VS = 4.75V
125
120
115
110
–40 –30 –20 –10 0 10 20 30 40 50 60 70 80
TEMPERATURE (°C)
Figure 22. Power Supply Current vs. Temperature
500Ω
200Ω
NO TERMINATION
Figure 20. Third Order Distortion (3USB), Carrier Feedthrough, Sideband
Suppression, and SSB POUT vs. Baseband Differential Input Level
(FLO = 1900 MHz, FBB = 1 MHz, I and Q Inputs Driven in Quadrature, TA = 25°C)
–10
10
3USB, dBc
–15
8
SSB, dBm
–20
6
–25
4
–30
2
–35
0
LO, dBm
–40
–2
–45
–4
–50
–6
USB, dBc
–55
–8
–60
–10
–65
–12
–70
–14
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0
BASEBAND DIFFERENTIAL INPUT VOLTAGE (V p-p)
Figure 23. Smith Chart of LOIP Port S11 (LOIN Pin AC-Coupled
to Ground). Curves with Balun and External Termination
Resistors Also Shown (TA = 25°C)
0
–5
–10
–15
VS = 5V
–20
–25
–30
–35
–40
700 900 1100 1300 1500 1700 1900 2100 2300 2500 2700
FREQUENCY (MHz)
Figure 21. Third Order Distortion (3USB), Carrier Feedthrough, Sideband
Suppression, and SSB POUT vs. Baseband Differential Input Level
(FLO = 2140 MHz, FBB = 1 MHz, I and Q Inputs Driven in Quadrature, TA = 25°C)
Figure 24. Return Loss S22of VOUT Output (TA = 25°C)
Rev. B | Page 10 of 28
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