LIS2DW12 datasheet(21/66 Pages) STMICROELECTRONICS

部件名	LIS2DW12

功能描述	MEMS digital output motion sensor: high-performance ultra-low-power 3-axis

PDF	66 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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21 / 66 page

Digital main blocks

5.1

Block diagram of filters

Figure 7. Accelerometer chain

Referring to Figure 7. Accelerometer chain, the first block is the Low-Pass Filter 1 (LPF1) whose behavior is a

function of the actual ODR and mode selected in CTRL1 (20h). The signal is then downsampled and can be

either directly sent to the output registers or to the Low-Pass Filter 2 (LPF2) or High-Pass-Filter (HP) using the

BW_FILT[1:0] bits and FDS bit in CTRL6 (25h).

In the low-pass path, it is possible to apply a user offset determined by the X_OFS_USR (3Ch), Y_OFS_USR

(3Dh), Z_OFS_USR (3Eh) register values and the USR_OFF_W bit in CTRL7 (3Fh) and send the result to the

output using the USR_OFF_ON_OUT bit in CTRL7 (3Fh).

In the high-pass path, it is possible to use the high-pass filter reference mode (HP) using the HP_REF_MODE bit

in CTRL7 (3Fh).

LIS2DW12

Digital main blocks

DS11811 - Rev 8

page 21/66

LIS2DW12 数据表(PDF) 21 Page - STMicroelectronics