參數(shù)資料
型號(hào): U2730B-BFS
英文描述: L-Band Down-Converter for DAB Receivers
中文描述: L波段下為DAB接收器
文件頁(yè)數(shù): 10/12頁(yè)
文件大?。?/td> 271K
代理商: U2730B-BFS
U2730B-B
Rev. A1, 22-Jul-98
Preliminary Information
10 (12)
Typical Gain Control Charateristics
Operating conditions: V
CC
= 8.5 V, T
amb
= 25C, F
RF
= 1490 MHz, F
LO
= 1261.568 MHz
–40
–35
–30
–25
–20
–70
–60
–50
–40
pRF ( dBm )
–30
–20
–10
0
p
14851
R
th
=18.8k
R
th
=12k
R
th
=6.8k
Figure 8. IF output power (Pin 19)
3.0
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
4.0
4.1
4.2
–70
–60
–50
–40
pRF ( dBm )
–30
–20
–10
0
v
14852
R
th
=18.8k
R
th
=6.8k
Figure 9. Gain control voltage (Pin 11)
Third Order 2-Tone Intermodulation
Ratio (dim3)
Operating conditions: f
RF1
= 1490 MHz,
f
RF2
= 1491 MHz, p
RF1
= p
RF2
= p
RF
20
25
30
35
40
45
50
–70
–60
–50
–40
pRF ( dBm )
–30
–20
–10
0
d
14853
R
th
=18.8k
R
th
=12k
R
th
=6.8k
Figure 10.
Total Supply Current
Operating conditions: R
TH
= 12 k , PLL locked,
Icp = 200 A
50
52.5
55.0
57.5
60.0
62.5
65.0
–70
–60
–50
–40
pRF ( dBm )
–30
–20
–10
0
I
14854
V
S
=8.5V
V
S
=9.35V
Figure 11.
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