User's Manual

PRELIMINARY
CYBLE-224110-00
Document Number: 002-11264 Rev. *A Page 12 of 43
Power Supply Connections and Recommended External Components
Power Connections
The CYBLE-224110-00 contains three power supply
connections, VDD, VDDA, and VDDR. The VDD and VDDA
connections supply power for the digital and analog device
operation respectively. VDDR supplies power for the device
radio and PA/LNA.
VDD and VDDA accept a supply range of 1.71V to 5.5V. VDDR
accepts a supply range of 2.0V to 3.6 V. These specifications can
be found in Table 12. The maximum power supply ripple for both
power connections on the module is 100 mV, as shown in
Table 10.
The power supply ramp rate of VDD and VDDA must be equal
to or greater than that of VDDR when the radio is used.
Connection Options
Two connection options are available for any application:
1. Single supply: Connect VDD, VDDA, and VDDR to the same
supply.
2. Independent supply: Power VDD, VDDA, and VDDR
separately.
External Component Recommendation
In either connection scenario, it is recommended to place an
external ferrite bead between the supply and the module
connection. The ferrite bead should be positioned as close as
possible to the module pin connection.
Figure 7 details the recommended host schematic options for a
single supply scenario. The use of one or three ferrite beads will
depend on the specific application and configuration of the
CYBLE-224110-00.
Figure 8 details the recommended host schematic for an
independent supply scenario.
The recommended ferrite bead value is 330 Ω, 100 MHz (Murata
BLM21PG331SN1D).
Figure 7. Recommended Host Schematic Options for Single Supply Option
Three Ferrite Bead Option
Single Ferrite Bead Option