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参数资料
| 型号： | LISY300ALTR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 模拟信号调理 |
| 英文描述： | TEMPERATURE SENSOR, PBCC28 |
| 封装： | 7 X 7 MM, 1.50 MM HEIGHT, GREEN, PLASTIC, LGA-28 |
| 文件页数： | 13/13页 |
| 文件大小： | 171K |
| 代理商： | LISY300ALTR |
LISY300AL
Application hints
9/13
3
Application hints
Figure 3.
LISY300AL electrical connections and external components values
Power supply decoupling capacitors (100 nF ceramic or polyester + 10 F Aluminum)
should be placed as near as possible to the device (common design practice).
The LISY300AL allows to band limit the output rate response through the use of two first-
order on-chip filters: a switched capacitor low-pass filter, with 400Hz -3dB bandwidth, in
combination with an active low-pass filter. The active filter -3 dB nominal frequency (ftA) is
set through an internal resistor RACT and the external capacitor CACT (added between
CACT pin #5 and ANALOG OUTPUT pin #6), by the formula:
The value of the internal resistor RACT is 180 k, while the external capacitor CACT is used to
select the signal bandwidth. The sensed frequency range spans from DC up to the selected
bandwidth.
In order to further reduce high-frequency noise, the LISY300AL supports an additional
given by the formula:
100 nF
9.5kOhm
450nF
9nF
0.4nF
VDD
1
7
2
3
4
5
6
8
9 10 11 12 13 14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
GND
PD
ST
LISY300AL
(top view)
C2
R1
C1
CLOAD
CACT
GND
10 F
GND
COPT
ROPT
Optional
Low-pass filter
Digital signals
VoutYAW
+
z
f
tA
1
2
π R
ACT
C
ACT
---------------------------------------------------
=
f
tP
1
2
π R
OPT
C
OPT
----------------------------------------------------
=
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