Hi,
We are using the IAM-20380 gyroscope in a small low power device and I am trying to optimize power consumption. In some cases the sleep mode is too slow to react and I need to use the next best thing, but I am not sure what it is.
My assumption is the standby-mode (Power mgmt 1 register 107, bit 4). But there seems to be no information about the power consumption of that mode in the data sheet. Table 2 of the data sheet lists power consumptions, but not for standby.
What power/current consumption should I expect to get with the standby-mode? My own measurements indicate clearly more than 1 mA, but can it really be so high?
Petri Haavisto
Sharpeye Systems, Finland
Hi Petri,
thanks for your inquiry and your interest in our products. Apologize for the very late response and I hope it's going to be still useful.
Back to your question. Gyro standby mode allows a quick recovery of gyro functionality by keeping gyro drive and pll circuitry enabled; these blocks are those that account for the most of startup time and the consumption of the device: that's the reason why overall current consumption doesn't reduce much when in standby-mode.
Unfortunately, if sleep time reaction is too low for your needs, there's no other way to reduce power consumption.
Hope it helps.
Best regards,
Simone