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ADL5320-EVALZ Datasheet PDF : 16 Pages
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ADL5320
BASIC LAYOUT CONNECTIONS
The basic connections for operating the ADL5320 are shown in
Figure 26.
Table 5 lists the required matching components. Capacitors C1,
C2, C3, C4, and C7 are Murata GRM155 series (0402 size) and
Inductor L1 is a Coilcraft 0603CS series (0603 size). For all
frequency bands, the placement of C3 and C7 are critical. From
2300 MHz to 2700 MHz, the placement of C2 is also important.
Table 6 lists the recommended component placement for
various frequencies.
A 5 V dc bias is supplied through L1 which is connected to
RFOUT (Pin 3). In addition to C4, 10 nF and 10 μF power
supply decoupling capacitors are also required. The typical
current consumption for the ADL5320 is 110 mA.
GND VSUP
C6 10µF
RFIN C11 λ12
C31
(2)
ADL5320
1
2
3 λ22
C5 10nF
C41
L11
λ32
λ42 C21
C71
RFOUT
1SEE TABLE 5 FOR FREQUENCY SPECIFIC COMPONENTS.
2SEE TABLE 10 FOR RECOMMENDED COMPONENT SPACING.
Figure 26. Basic Connections
SOLDERING INFORMATION AND RECOMMENDED
PCB LAND PATTERN
Figure 27 shows the recommended land pattern for the ADL5320.
To minimize thermal impedance, the exposed paddle on the
SOT-89 package underside is soldered down to a ground plane
along with Pin 2. If multiple ground layers exist, they should
be stitched together using vias. For more information on land
pattern design and layout, refer to the Application Note AN-772,
A Design and Manufacturing Guide for the Lead Frame Chip
Scale Package (LFCSP).
1.80mm
5.56mm 0.20mm
3.48mm
0.86mm
0.62mm
1.27mm
1.50mm
3.00mm
Figure 27. Recommended Land Pattern
Table 5. Recommended Components for Basic Connections
Frequency (MHz)
C1 (pF)
C2 (pF)
450 to 500
100
100
800 to 960
47
47
1805 to 1880
22
22
1930 to 1990
22
22
2110 to 2170
22
22
2300 to 2400
12
2.2
2500 to 2700
12
1.0
C3 (pF)
18
6.8
0.5
0.5
0.5
1.2
1.8
C4 (pF)
100
100
22
22
22
12
12
C7 (pF)
6.8
2.2
1.5
1.5
1.5
1.0
0.5
L1 (nH)
47
47
15
15
15
15
15
Table 6. Matching Component Spacing
Frequency (MHz)
450 to 500
800 to 960
1805 to 2170
2300 to 2400
2500 to 2700
λ1 (mils)
391
200
300
225
142
λ2 (mils)
75
75
75
75
75
λ3 (mils)
364
100
175
125
89
λ4 (mils)
50
350
275
125
75
Rev. 0 | Page 11 of 16
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