adl5562 Analog Devices, Inc., adl5562 Datasheet - Page 18

• Manufacturer Part Number: adl5562
• Description: 3.3 Ghz Ultralow Distortion Rf/if Differential Amplifier
• Manufacturer: Analog Devices, Inc.

ADL5562
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, they
should be designed such that stray capacitance at the
input/output pins is minimized. In many board designs, the
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 dB
12 dB
15.5 dB
Table 13. Output Matching Network for Figure 42
R
200
1 K
L
L
V
V
R1
29
33
40.2
R1
67
100
200
ETC1-1-13
R7
84.5
487
R7
50
475
PORT 1
PORT 3
Figure 42. Differential Characterization Circuit Using Agilent E8357A 4-Port PNA
R1
R2
R2
29
33
40.2
R1
R2
0.1µF
0.1µF
R2
67
100
200
Figure 41. General Purpose Characterization Circuit
R3
R4
R5
R6
R3
R4
R5
R6
VIP2
VIP1
VIN1
VIN2
R8
50
475
ADL5562
VIP2
VIP1
VIN1
VIN2
Rev. 0 | Page 18 of 24
R3
Open
0
0
R8
84.5
487
R3
Open
0
0
ADL5562
VOP
VON
VOP
VON
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
0
Open
0
R4
0
Open
0
R7
R8
R9
Open
61.9
R10
R9
R7
R8
R9
34.8
25
R10
R9
ETC1-1-13
PORT 2
PORT 4
R5
0
Open
0
R5
0
Open
0
SPECTRUM
ANALYZER
R10
Open
61.9
R10
34.8
25
R6
Open
0
0
R6
Open
0
0