User's Manual

MPQ Test Radio Z
2005-10-03
LOGITECH CONFIDENTIAL
(Printed on 10/3/2005 ) page 17 of 19
Figure 6 Recommended Reflow Temperature Profile
2.9 Application PCB Layout Recommendation
2.9.1 Supply Voltage
As the L-ZM2102 Z-Wave Module contains a RF transceiver good supply voltage decoupling is important. Two
decoupling capacitors should be placed at the VCC pin (EP11) a 4.7uF and a 100nF capacitor is recommended.
The two capacitors should be placed as close EP11 as possible and the capacitor should be placed between the L-
ZM2102 Z-Wave Module and the via that goes to the power plane as shown in Figure 7.
Figure 7 Placement of decoupling capacitor (power pin, EP11)
2.9.2 Ground Plane
In order to minimize any noise coupling from noisy signals (typically power products) it is recommended