Basic circuit diagram of a 2.4 GHz radio system-on-chip CC2430

  
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Figure C1, C2 is 22pF capacitor connected to 32 MHz .png">crystal oscillator circuit , the use of quartz crystal
Basic circuit diagram of a 2.4 GHz radio system-on-chip CC2430 - schematic

oscillator for normal operation. C3, C4 is 15 pF capacitor connected to the 32.768 kHz crystal oscillator circuit, quartz crystal for this work in sleep mode, reducing power consumption. C5 = 0.1 F, for removing some of the clutter, to prevent the microcontroller error reset. C6 ~ C8 were 100 nF, 220n F, 220 nF, used as a filter to remove clutter to make a more stable voltage. C9 = 5.6 pF, Unbalanced transformer circuit by the capacitor C9 and inductor L1, L2, L3 and microwave transmission line consisting of a PCB, the entire structure to meet the RF input / output matching resistor (50 ) requirements, L1, L2, L3, respectively 8.2 nH, 22 nH, 1.8 nH. C10, C11, C12, C13, C14 as decoupling capacitors for power supply filtering, to improve the stability of the work of the chip. Bias resistor R1, R2 respectively 43 k , 56 k , R1 is used to set the 32 MHz crystal oscillator precision bias current. Since the CC2430 chip has low power consumption, use 2 2 800 mAh of battery power the node. External antenna antenna choice.




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