
AD8349
–10
–15
–20
–25
–30
–35
–40
V
S
= 5V
–45
–50
–55
03570-0013
–10
–15
三阶失真( DBC)
边带抑制( DBC)
–20
–25
–30
–35
–40
–45
–50
–55
V
S
= 5.25V
V
S
= 5V
V
S
= 4.75V
V
S
= 5.25V
V
S
= 4.75V
900
1100 1300 1500 1700 1900 2100 2300 2500 2700
LO频率(MHz)
900
1100 1300 1500 1700 1900 2100 2300 2500 2700
LO频率(MHz)
图13.边带抑制与F
LO
(F
BB
= 1MHz时, I和Q输入
在1.2 V P-P差分,T驱动正交
A
= 25°C)
–10
–15
V
S
= 4.75V
图16.三阶失真与F
LO
(F
BB
= 1MHz时, I和Q输入
在1.2 V P-P差分,T驱动正交
A
= 25°C)
–10
–15
边带抑制( DBC)
三阶失真( DBC)
–20
–25
V
S
= 5.25V
–30
–35
–40
–45
–50
–55
03570-0-014
–20
–25
–30
–35
–40
–45
–50
–55
V
S
= 5.25V
V
S
= 4.75V
V
S
= 5V
V
S
= 5V
–60
1
10
基带频率( MHz)的
100
1
10
基带频率( MHz)的
100
图14.边带抑制与F
BB
(F
LO
= 2140兆赫, I和Q输入
在1.2 V P-P差分,T驱动正交
A
= 25°C)
–30
图17.三阶失真与F
BB
(F
LO
= 2140兆赫, I和Q输入
在1.2 V P-P差分,T驱动正交
A
= 25°C)
–30
V
S
= 4.75V
V
S
= 5V
边带抑制( DBC)
–40
V
S
= 5V
V
S
= 4.75V
三阶失真( DBC)
–35
–35
–40
V
S
= 5.25V
–45
V
S
= 5.25V
–50
–45
–50
–55
–55
03570-0-015
0
10
20
30
40
50
60
70
80
0
10
20
30
40
50
60
70
80
温度(℃)
温度(℃)
图15.边带抑制与温度的关系(F
LO
= 2140兆赫,
F
BB
= 1 MHz时, I和Q输入正交1.2 V pp差分驱动)
图18.三阶失真与温度的关系(F
LO
= 2140兆赫,
F
BB
= 1 MHz时, I和Q输入1.2 V pp差分驱动正交)
第0版|第9页的28
03570-0-018
–60
–40 –30 –20 –10
–60
–40 –30 –20 –10
03570-0-017
–60
03570-0016
–60
700
–60
700