ADL5604 Analog Devices, ADL5604 Datasheet - Page 16

• Manufacturer Part Number: ADL5604
• Description: 700 MHz To 2700 MHz 1 W RF Driver Amplifier
• Manufacturer: Analog Devices

ADL5604
ADL5604 MATCH
The ADL5604 is easily matched with three matching components
and a microstrip line used as inductance. If spacing is tight, an
external inductor can take the place of the microstrip line. The
output match includes a short (76 mils, including the portion
that is used as the pad for the chip) non 50 Ω line to accommo-
date the four output pins and allow for easier low inductance
output matching. The pads for Pin 9 to Pin 12 are included on
this microstrip line, as well as the pad for the L1 bias inductor.
The extended length allows the bias inductor to be placed close
Table 5. Component Spacing
Frequency
748 MHz
880 MHz
943 MHz
1960 MHz
2140 MHz
2630 MHz
Table 6. Component Values
Frequency
748 MHz
880 MHz
943 MHz
1960 MHz
2140 MHz
2630 MHz
RFIN
100pF
C1
10pF
C1 (pF)
100 pF
100 pF
100 pF
22 pF
0 Ω
22 pF
C3
λ1 (mils)
67
75
N/A
35
45
55
C2 (pF)
100 pF
100 pF
100 pF
22 pF
22 pF
22 pF
5.1Ω
20pF
R1
C4
λ
2
λ
1
Figure 36. ADL5604 Match Parameters, 748 MHz
C3 (pF)
10.0 pF
N/A
12.0 pF
0 Ω
1.3 pF
N/A
1
2
λ2 (mils)
348
138
118
N/A
182
182
RFIN
RFIN
GND
16
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ADL5604
GND
15
C4 (pF)
20.0 pF
9.0 pF
N/A
4.3 pF
2.7 pF
2.2 pF
GND
14
to the chip, where the impedance is lowest, while allowing a low
inductance path to a shunt capacitor to ground. This extra
length allows for alternative matching but is also included in the
output match at all frequencies. Table 5 and Table 6 detail the
component spacing and values for the input and output
matching networks for the ADL5604 for the different
frequencies. Figure 36 through Figure 41 show the matching
networks.
GND
λ3 (mils)
41
41
41
41
41
41
13
RFOUT
RFOUT
RFOUT
RFOUT
C5 (pF)
7.0 pF
6.0 pF
6.2 pF
2.2 pF
2.4 pF
1.8 pF
12
11
10
9
λ
L1 (nH)
16 nH
16 nH
16 nH
16 nH
16 nH
16 nH
λ
3
λ4 (mils)
272
181
220
232
197
126
5
λ
4
L1
16nH
2.7nH
L
OUT
N/A
N/A
N/A
N/A
N/A
4.3 nH
L2 (nH)
C5
7pF
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100pF
λ5 (mils)
106
154
95
N/A
N/A
N/A
C2
RFOUT
Lout (nH)
2.7 nH
3.6 nH
3.0 nH
N/A
N/A
N/A