參數(shù)資料
型號: HFA3724
廠商: HARRIS SEMICONDUCTOR
元件分類: 衰減器
英文描述: 400MHz Quadrature IF Modulator/Demodulator
中文描述: MODEM
文件頁數(shù): 15/24頁
文件大小: 186K
代理商: HFA3724
15
Test Diagram
(280MHz IF)
NOTES:
22. Input termination used to provide a 50
impedance. Limiter Noise Figure
9dB for this configuration.
23. Bandpass filter for 280MHz, BW = 47MHz, Q = 6.
24. Network shown for a typical -10dBm input at 50
.
25. Matching network from 250
to 50
at 280MHz.
26. Attenuator is optional if TTL driver can drive 50
.
FIGURE 23. TEST DIAGRAM (280MHz IF)
0.001
0.001
LPF_SEL0
LPF_SEL1
0.1
RXQ_OUT
L
L
M
M
V
CC
316
42
0.1
100p
56
47p 220
RSSI
LO_OUT
LO_IN
RXI_OUT
V
CC
0.1
0.1
V
CC
1K
100p
100p
V
CC
V
CC
0.1
0.1
TX_IF_OUT
TXI
TXQ
0.1
74
75
79
80
PE
54
55
56
57
59
60
PE
29
30
33
34
14
15
16
17
9
10
11
12
13
21
22
44
46
43
41
45
47
48
49
1K
18
19
2V REF
(NOTE 24)
0.001
0.001
61
64
100p
100p
56
100p
1
1
2
3
4
1
1
0.1
IF_IN
560
100p
100p
76
77
62
63
1
47p
1
1
8
(NOTE 23)
0.1
47p
47nH
3 TO 10p
(NOTE 25)
(NOTE 22)
50
50
HI_Z_PROBE
HI_Z_PROBE
680
(NOTE 26)
0.001
0.001
27
28
35
36
0.001
0.001
25
26
37
38
0.001
0.001
23
24
39
40
TABLE 2. POWER MANAGEMENT
TRANSMIT
RECEIVE
POWER DOWN
LIM1_PE
0
1
0
LIM2_PE
0
1
0
LPF_RX_PE
0
1
0
MOD_RX_PE
0
1
0
MOD_TX_PE
1
0
0
LPF_TX_PE
1
0
0
4.3K
4.3K
680
50
HFA3724
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