The LSM303DLHC is a 3-axis accelerometer + 3-axis magnetometer chip from ST. The datasheet is a bit light on details however. I'm trying to work out
- what is different about the low-power mode and how much power does it save, and
- what is the high precision mode?
The only info I can glean from the datasheet is on page 15:
LSM303DLHC provides two different acceleration operating modes, respectively reported as “normal mode” and “low-power mode”. While normal mode guarantees high resolution, low-power mode reduces further the current consumption.
followed by a table with the following info:
Low-power mode - BW(Hz) = ODR/2, Turn on time = 1ms
Normal mode - BW(Hz) = ODR/9, Turn on time = 7/ODR
ODR means output data rate, and I assume BW means bandwidth, but bandwidth of what? The term bandwidth or BW doesn't appear in the rest of the datasheet. In the electrical characteristic there is no info on the low-power mode consumption.
Can anyone shed some light on this?