LSM6DSTTR datasheet(48/180 Pages) STMICROELECTRONICS

No de pièce	LSM6DSTTR

Description	iNEMO inertial module: always-on 3D accelerometer and 3D gyroscope

PDF	180 Pages

Scroll/Zoom	100%

Fabricant	STMICROELECTRONICS [STMicroelectronics]

Site Internet	http://www.st.com

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48 / 180 page

Functionality

LSM6DST

48/180

DocID033525 Rev 2

6.3

Gyroscope power modes

In the LSM6DST, the gyroscope can be configured in four different operating modes: power-

down, low-power, normal mode and high-performance mode. The operating mode selected

depends on the value of the G_HM_MODE bit in CTRL7_G (16h). If G_HM_MODE is set to

'0', high-performance mode is valid for all ODRs (from 12.5 Hz up to 6.66 kHz).

To enable the low-power and normal mode, the G_HM_MODE bit has to be set to '1'. Low-

power mode is available for lower ODRs (12.5, 26, 52 Hz) while normal mode is available

for ODRs equal to 104 and 208 Hz.

6.4

Block diagram of filters

Figure 15. Block diagram of filters

6.4.1

Block diagrams of the accelerometer filters

In the LSM6DST, the filtering chain for the accelerometer part is composed of the following:



Analog filter (anti-aliasing)



Digital filter (LPF1)



Composite filter

Details of the block diagram appear in the following figure.

Figure 16. Accelerometer UI chain

LSM6DSTTR Fiches technique(PDF) 48 Page - STMicroelectronics