3 Application Interfaces
26
The reference design is shown in the following figure.
Figure 4. Reference power supply design
Design Description
Table 24. Design description
To reduce power fluctuations
during module operation
Use a capacitor with low ESR
220uF x 2, 10uF, 22uF
LDO or DCDC power supply requires
capacitor with a capacitance of no less
than 440uF.
Battery power supply requires
capacitance of 100uF to 220uF.
Filter out interference caused
by clock and digital signals.
Eliminate low-frequency and
intermediate-frequency RF
interference.
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