CLM920_AC3 Module Hardware Usage Guide
Shanghai Yuge Information Technology co., LTD
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capacitor (eliminating clock and digital signal interference) and 10pF, 33pF (eliminating low
frequency RF interference). Ceramic capacitors.
Figure 3-2 Power supply design
3.3.2 Power reference circuit
In actual design, the power circuit can be designed using a switching DC power supply
or a linear LDO power supply, and then the PMOS transistor is used to control the power
supply input so that the power supply can be completely cut off. Both design circuits need to
supply enough current. Specific reference to the following circuit design.
Figure 3-3 LDO linear power supply reference circuit
