Cypress EZ-BLE PRoC CYBL11172-56LQXI, Руководство пользователя

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Document Number: 002-02521 Rev. *F Page 10 of 39
CYBLE-012011-00
CYBLE-012012-10
Power Supply Connections and Recommended External Components
Power Connections
The CYBLE-01201X-X0 contains two power supply connections,
VDD and VDDR. The VDD connection supplies power for both
digital and analog device operation. The VDDR connection
supplies power for the device radio.
VDD accepts a supply range of 1.71 V to 5.5 V. VDDR accepts
a supply range of 1.9 V to 5.5 V. These specifications can be
found in
Table 9 . The maximum power supply ripple for both
power connections on the module is 100 mV, as shown in
Table 7 .
The power supply ramp rate of VDD must be equal to or greater
than that of VDDR.
Connection Options
Two connection options are available for any application:
1. Single supply: Connect VDD and VDDR to the same supply.
2. Independent supply: Power VDD 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 two ferrite beads will
depend on the specific application and configuration of the
CYBLE-01201X-X0.
Figure 8 details the recommended host schematic for an
independent supply scenario.
The recommended ferrite bead value is 330

, 100 MHz. (Murata
BLM21PG331SN1D).
Figure 7. Recommended Host Schematic Options for a Single Supply Option
Two Ferrite Bead Option (Seen from Bottom)
Single Ferrite Bead Option (Seen from Bottom)