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參數(shù)資料
| 型號： | LY530ALTR |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PBGA16 |
| 封裝： | 5 X 5 MM, 1.60 MM HEIGHT, LEAD FREE, LGA-16 |
| 文件頁數(shù)： | 7/30頁 |
| 文件大?。?/td> | 576K |
| 代理商： | LY530ALTR |
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LY530AL
Application hints
15/30
3
Application hints
Figure 5.
LY530AL 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).
VDDA(pin 16) and VDDD(pin 15) lines have been kept separated to avoid switching noise
coupling on the analog side.
The LY530AL 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 #3 and ANALOG OUTPUT pin #4), 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 LY530AL supports an additional optional
low-pass filter on ANALOG OUTPUT pin #4 (
Figure 5). The cutoff frequency (f
tP) is given by
the formula:
100 nF
9.5kOhm
450nF
9nF
0.4nF
VDDD
GND
PD
ST
C2
R1
C1
CLOAD
CACT
GND
10 F
GND
COPT
ROPT
Optional
Low-pass filter
Digital signals
VoutYAW
+
z
LY530AL
(Top View)
1
16
14
13
9
8
6
5
SCL/SPC
CS
DR
SDO
SDA_SDI_SDO
IF_DIS
9nF
VDDA
GND
10 F
100 nF
f
tA
1
2
π R
ACT
C
ACT
---------------------------------------------------
=
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