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SWRS225B – FEBRUARY 2019 – REVISED MARCH 2020
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Applications, Implementation, and Layout
Copyright © 2019–2020, Texas Instruments Incorporated
The recommended values for the PCB are provided for 2-layer boards in
and 4-layer boards in
Table 7-4. Recommended PCB Values for 2-Layer
Board (L1 to L2 = 42.1 mils)
PARAMETER
VALUE
UNIT
W
26
mils
S
5.5
mils
H
42.1
mils
Er (FR-4 substrate)
4.2
F/m
Table 7-5. Recommended PCB Values for 4-Layer
Board (L1 to L2 = 16 mils)
PARAMETER
VALUE
UNITS
W
21
mils
S
10
mils
H
16
mils
Er (FR-4 substrate)
4.5
F/m