ADL5561-EVALZ AD [Analog Devices], ADL5561-EVALZ Datasheet - Page 18

• Manufacturer Part Number: ADL5561-EVALZ
• Description: 2.9 GHz Ultralow Distortion RF/IF Differential Amplifier
• Manufacturer: AD [Analog Devices]

ADL5561
LAYOUT CONSIDERATIONS
High-Q inductive drives and loads, as well as stray transmission
line capacitance in combination with package parasitics, can
potentially form a resonant circuit at high frequencies, resulting in
excessive gain peaking or possible oscillation. If RF transmission
lines connecting the input or output are used, designed them
such that stray capacitance at the input/output pins is minimized.
Table 10. Gain Setting and Input Termination Components for Figure 41
A
6 dB
12 dB
15.5 dB
Table 11. Output Matching Network for Figure 41
R
200
1 k
Table 12. Gain Setting and Input Termination Components for Figure 42
A
6
12
15.5
Table 13. Output Matching Network for Figure 42
R
200
1 k
L
L
V
V
(Ω)
(Ω)
(dB)
(dB)
R1 (Ω)
29
33
40.2
R1 (Ω)
67
100
200
ETC1-1-13
R7 (Ω)
84.5
487
R7 (Ω)
50
475
PORT 1
PORT 3
Figure 42. Differential Characterization Circuit Using Agilent E8357A 4-Port PNA
R1
R2
R1
R2
0.1µF
0.1µF
R2 (Ω)
67
100
200
R2 (Ω)
29
33
40.2
Figure 41. General-Purpose Characterization Circuit
R3
R4
R5
R6
R3
R4
R5
R6
VIP2
VIP1
VIN1
VIN2
R8 (Ω)
50
475
ADL5561
VIP2
VIP1
VIN1
VIN2
Rev. B | Page 18 of 24
R8 (Ω)
84.5
487
R3 (Ω)
Open
0
0
R3 (Ω)
Open
0
0
ADL5561
VOP
VON
VOP
VON
In many board designs, the signal trace widths should be
minimal where the driver/receiver is more than one-eighth of
the wavelength from the amplifier. This nontransmission line
configuration requires that underlying and adjacent ground and
low impedance planes be dropped from the signal lines
0.1µF
0.1µF
R4 (Ω)
0
Open
0
R4 (Ω)
0
Open
0
R7
R8
R9 (Ω)
Open
61.9
R10
R9
R7
R8
R9 (Ω)
34.8
25
R10
R9
ETC1-1-13
PORT 2
PORT 4
R5 (Ω)
0
Open
0
R5 (Ω)
0
Open
0
SPECTRUM
ANALYZER
R10 (Ω)
Open
61.9
R10 (Ω)
34.8
25
R6 (Ω)
Open
0
0
R6 (Ω)
Open
0
0