参数资料
型号: AD8349ARE
厂商: ANALOG DEVICES INC
元件分类: 衰减器
英文描述: 700 MHz to 2700 MHz Quadrature Modulator
中文描述: 700 MHz - 2700 MHz RF/MICROWAVE QPSK MODULATOR
封装: MO-153ABT, TSSOP-16
文件页数: 13/28页
文件大小: 969K
代理商: AD8349ARE
AD8349
Rev. 0 | Page 13 of 28
0
5
10
15
20
25
30
35
40
P
–60
–45
–40
–35
–30
–25
CARRIER FEEDTHROUGH (dBm)
–55
–50
0
F
LO
= 1900MHz
Figure 37. Carrier Feedthrough Distribution at F
LO
= 1900 MHz (F
BB
= 1 MHz,
I and Q Inputs Driven in Quadrature at 1.2 Vp-p, T
A
= 25°C)
CARRIER FEEDTHROUGH (dBm)
P
24
22
20
18
16
14
12
10
8
6
4
2
0
–70
–65
–60
–55
–50
–45
–40
–35
–30
0
F
LO
= 2140 MHz
Figure 38. Carrier Feedthrough Distribution at F
LO
= 2140 MHz (F
BB
= 1 MHz,
I and Q Inputs Driven in Quadrature at 1.2 V p-p, T
A
= 25°C)
0
2
4
6
8
10
12
14
16
18
20
P
–80
–70
–60
–50
–40
–30
CARRIER FEEDTHROUGH (dBm)
0
F
LO
= 900MHz
Figure 39. Carrier Feedthrough Distribution at F
LO
= 900 MHz. (F
BB
= 1 MHz, I
and Q Inputs Driven in Quadrature at 1.2 V p-p, T
A
= 25°C)
0
–70
5
10
15
20
25
30
35
P
–65
–60
–55
–50
–45
CARRIER FEEDTHROUGH (dBm)
AFTER NULLING TO < –65dBm AT +25
°
C
T = –40
°
C
T = +85
°
C
0
Figure 40. Carrier Feedthrough Distribution at Temperature Extremes, After
Carrier Feedthrough Nulled to < - 65 dBm at T
A
= 25°C. (F
LO
= 2140 MHz,
I and Q Inputs at a bias of 400 mV)
P
0
4
2
8
6
12
10
16
14
20
18
24
22
30
28
26
–75
–65
SIDEBAND SUPPRESSION (dBc)
AFTER NULLING TO < –50dBc AT +25
°
C
–60
–55
–50
–35
–70
–40
–45
0
T = –40
°
C
T = +85
°
C
Figure 41. Sideband Suppression Distribution at Temperature Extremes, After
Sideband Suppression Nulled to < -50 dBc at T
A
= 25°C. (F
LO
= 2140 MHz,
F
BB
= 1 MHz, I and Q Inputs biased at 0.4 V)
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