adl5504 Analog Devices, Inc., adl5504 Datasheet - Page 20

• Manufacturer Part Number: adl5504
• Description: 450 Mhz To 6000 Mhz Trupwr Detector
• Manufacturer: Analog Devices, Inc.

ADL5504
EVALUATION BOARD
Figure 47 shows the schematic of the ADL5504 evaluation board.
The board is powered by a single supply in the 2.5 V to 3.3 V
range. The power supply is decoupled by 100 pF and 0.1 μF
capacitors. The device must be enabled by switching SW1A
to the position labeled on.
The RF input has a broadband match of 50 Ω using a single
75 Ω resistor at R7A. More precise matching at spot frequencies
is possible (see the RF Input Interfacing section).
Table 4 details the various configuration options of the evaluation
board. Figure 48 shows the layout of the evaluation board.
RFINA
(P1 – B6)
VPOSA
(OPEN)
R7A
75Ω
R9A
10nF
C3A
(P1 – B12)
Figure 48. Layout of Evaluation Board, Component Side
1
2
3
Figure 47. Evaluation Board Schematic
FLTR
VPOS
RFIN
ADL5504
(OPEN)
(OPEN)
C8A
C7A
Rev. 0 | Page 20 of 24
COMM
VRMS
ENBL
6
5
4
(P1 – B8)
VPOSA
R1A
(OPEN)
R3A
Land Pattern and Soldering Information
Pad diameters of 0.28 mm are recommended with a solder paste
mask opening of 0.38 mm. For the RF input trace, a trace width
of 0.30 mm is used, which corresponds to a 50 Ω characteristic
impedance for the dielectric material being used (FR4). All traces
going to the pads are tapered down to 0.15 mm. For the RFIN
line, the length of the tapered section is 0.20 mm.
0
Ω
VPOSA
R8A
(OPEN)
C4A
(OPEN)
VPOSA
R10A
(OPEN)
R2A
(OPEN)
(P1 – A1,B1)
(P1 – B4)
P2
R5A
(OPEN)
SW1A
ENA
VRMSA
R4A
0Ω