3 ms·
It also seems to fill a different niche from the MEMS resonators Apple are using. Those are ultra-low-power 32KHz oscillators for keeping time in standby mode,
by makomk 8y ago
It also seems to fill a different niche from the MEMS resonators Apple are using. Those are ultra-low-power 32KHz oscillators for keeping time in standby mode, but the CC2652RB still relies on an external quartz crystal for that, perhaps because this tech is even more power-hungry than the already too power-hungry high frequency quartz oscillator it replaces.
- abainbridge 8y agoSounds like it is slightly higher power. From the article: > Asked if there is any tradeoff by integrating a BAW resonator in the wireless MCU package, Wong noted a potential power delta at about 2% — “a couple of hundred microamps.” He called it “a reasonable tradeoff, [considering] its benefits outweigh [it].” But, I guess if you can invest the money and area you saved by not having an external crystal and buy a 2% bigger battery, which is probably a net win.