Hi,
My customer reported around 40mA peak current when CC1310 7XD is transmitting at 14dBm output power. I have used the Launchpad to verify and find the same. Details as below.
1. Datasheet spec, we can see 10dBm transmit current is 12.9mA and 14dBm is 22.6mA.
2. Setup using launchpad
Using 3V battery to power the Launchpad, with a 10 Ohm resistor in serial to measure the current. All jumpers are removed.
Software #1 : Using the rfPacketTX, 10dBm output power;
Software #2 : Using the rfPacketTX, 14dBm output power; (CCFG_FORCE_VDDR_HH is set);
Above is for 10dBm TX power, we can see the current is around 210mV on 10 Ohm resistor, which is around 21mA.
Above is 14dBm output power, it's 400mv which is 40mA.
Questions:
Even we take the 48MHz active M3 into consideration (2.5mA), the current is still high. (I don't think the external flash would consume too much power).
Could you help review above experiments and share comments? Thanks.