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CYBLE-212006-01 Datasheet(PDF) 10 Page - Cypress Semiconductor |
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CYBLE-212006-01 Datasheet(HTML) 10 Page - Cypress Semiconductor |
10 / 39 page ![]() Document Number: 002-15631 Rev.*B Page 10 of 39 PRELIMINARY CYBLE-212006-01 CYBLE-202007-01 CYBLE-202013-11 Power Supply Connections and Recommended External Components Power Connections The CYBLE-2X20XX-X1 contains two power supply connec- tions, 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 2.0V to 3.6V. 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 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-2X20XX-X1. 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) |
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