Table 2.
The board layer chosen as
the ground plane island
should be maximized in area
within the ground plane
zone, and should include all
resistor and capacitor
components recommended
for use with the HSDL-1100.
• The ground plane for the
HSDL-1100 module should
be connected ONLY to the
least noisy ground node
available on the PC board.
• The DC-DC converter should
be located as far away from
the HSDL-1100 on the PC
board as possible (at least
3 cm away). The board may
then look like Figure 2.
If any of the above aspects of
board layout are compromised,
and it is suspected that an EMI
shield over the HSDL-1100 may
be necessary, Agilent Technologies
can provide EMI shields, or
shielded HSDL-1100s in production
volumes. The PC board
should be prepared with the
proper through holes, if it is
suspected that an EMI shield will
be necessary (see datasheets for
Agilent part numbers HSDL-810x,
or HSDL-1100#S07).