17 ms·
I, too, chuckled at the "couple of hundred microamps" quote. However he refers to the high-speed clock, which is turned on only during transmit/receive, and is
by pplonbaw 8y ago
I, too, chuckled at the "couple of hundred microamps" quote. However he refers to the high-speed clock, which is turned on only during transmit/receive, and is indeed negligible compared to the total power consumption during RF communication.
That being said, their low-frequency on-chip oscillator specs are horrendous (50ppm PER DEGREE). You can't maintain a BTLE connection or mesh node with that kind of clock, you still need a 32kHz crystal oscillator, so TI haven't "solved" the crystal oscillator problem just yet...
- zbrozek 8y agoIndeed; they clearly haven't solved accuracy. But they've done a remarkable job of cleanliness. In particular, the close-in phase noise (e.g., at offsets from carrier < 1 KHz) these BAW-endowed parts are amazing.
- SwaraLink 8y agoWith the CC26xx parts you can use a 32kHz RCOSC and get accurate enough timing for BTLE connections, so with the CC2652RB you should be able to have true "crystal-less" Bluetooth LE.