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ADL8107ACPZN-R7 Arkusz danych(PDF) 21 Page - Analog Devices

Numer części ADL8107ACPZN-R7
Szczegółowy opis  GaAs, pHEMT, MMIC, Low Noise Amplifier, 6 GHz to 18 GHz
PDF  24 Pages
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Producent  AD [Analog Devices]
Strona internetowa  http://www.analog.com
Logo AD - Analog Devices

ADL8107ACPZN-R7 Arkusz danych(HTML) 21 Page - Analog Devices

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Data Sheet
ADL8107
APPLICATIONS INFORMATION
analog.com
Rev. 0 | 21 of 24
The basic connections for operating the ADL8107 over the speci-
fied frequency range are shown in Figure 81. No external biasing
inductor is required, allowing the 5 V supply to be connected
to the VDD pin. It is recommended to use 0.1 µF and 100 pF
power supply decoupling capacitors. The power supply decoupling
capacitors shown in Figure 81 represent the configuration used to
characterize and qualify the ADL8107.
To set IDQ, connect a resistor (R2) between the RBIAS and VDD
pins. A default value of 4.12 kΩ is recommended, which results in
a nominal IDQ of 90 mA. Table 9 shows how the IDQ and IDQ_AMP
varies vs. the RBIAS. The RBIAS pin also draws a current that
varies with the value of RBIAS (see Table 9). Do not leave the
RBIAS pin open.
Correct sequencing of the dc and RF power is required to safely
operate the ADL8107. During power up, apply VDD before the RF
power is applied to RFIN, and during power off, remove the RF
power from RFIN before VDD is powered off.
Figure 81. Typical Application Circuit
RECOMMENDED BIAS SEQUENCING
See the ADL8107-EVALZ user guide for the recommended bias
sequencing information.
Table 9. Recommended Bias Resistor Values for VDD = 5 V
RBIAS (kΩ)
IDQ (mA)
IDQ_AMP (mA)
IRBIAS (mA)
1.74
110
108.06
1.94
2.13
105
103.34
1.66
2.67
100
98.61
1.39
3.32
95
93.84
1.16
4.12
90
89.0
1.0
5.11
85
84.2
0.8
6.57
80
79.36
0.64
8.45
75
74.5
0.5
11.3
70
69.6
0.4
15
65
64.7
0.3
20.8
60
59.78
0.22
29.8
55
54.85
0.15
53
50
49.91
0.09
64.9
45
44.93
0.07
102
40
39.95
0.05
169
35
34.97
0.03
301
30
29.98
0.02



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