參數(shù)資料
型號: LIS2L06AL
廠商: STMICROELECTRONICS
元件分類: 模擬信號調(diào)理
英文描述: SPECIALTY ANALOG CIRCUIT, PBGA8
封裝: 5 X 5 MM, 1.60 MM HEIGHT, PLASTIC, LGA-8
文件頁數(shù): 2/17頁
文件大小: 202K
代理商: LIS2L06AL
Application hints
LIS2L06AL
10/17
4
Application hints
Figure 3.
LIS2L06AL Electrical Connection
Power supply decoupling capacitors (100nF ceramic or polyester + 10
F Aluminum) should
be placed as near as possible to the device (common design practice).
The LIS2L06AL allows to band limit Voutx and Vouty through the use of external capacitors.
The re-commended frequency range spans from DC up to 2.0kHz. In particular, capacitors
must be added at output pins to implement low-pass filtering for antialiasing and noise
reduction. The equation for the cut-off frequency (ft) of the external filters is:
Taking in account that the internal filtering resistor (Rout) has a nominal value equal to
110k
, the equation for the external filter cut-off frequency may be simplified as follows:
The tolerance of the internal resistor can vary typically of ±20% within its nominal value of
110k
; thus the cut-off frequency will vary accordingly. A minimum capacitance of 1nF for
Cload(x, y) is required in any case.
Table 5.
Filter Capacitor Selection, Cload (x,y)
Cut-off frequency
Capacitor value
1 Hz
1500 nF
10 Hz
150 nF
20 Hz
68 nF
50 Hz
30 nF
100 Hz
15 nF
200 Hz
6.8 nF
500 Hz
3 nF
DIRECTION OF THE
DETECTABLE
ACCELERATIONS
1
X
Vout X
100nF
Cload x
LIS2L06AL
10F
Vdd
Vout Y
GND
Cload y
(top view)
Optional
Digital signals
GND
ST
FS
Y
f
t
1
2
π R
out
C
load
xy
,
()
--------------------------------------------------------------
=
f
t
1.45
F
C
load
xy
,
()
-------------------------------Hz
[]
=
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