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CC2640F128RGZR VDDR 1.68 V output ripple

Bluetooth products, we do have bigger ripples in VDDR pin, the range of 1.52 to 1.68 V, the corrugated normal? Effect doesn't affect the use of the product?

Albin Zhang:

it is absolute correct. 

the DC2DC recharges the voltage of VDDR during chip standby. it is for power saving. 

you can see recharge *** if you test the system current. it will pump the voltage to high, then RTOS manage the recharge happens again while it drops a threshold. 

BR. AZ

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