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LC823450 데이터시트(PDF) 89 Page - ON Semiconductor

부품명 LC823450
상세설명  Low Power & High-Resolution Audio Processing System LSI
PDF  112 Pages
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제조업체  ONSEMI [ON Semiconductor]
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LC823450 데이터시트(HTML) 89 Page - ON Semiconductor

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LC823450
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APPLICATION
XTAL
For Oscillation
Figure 37. For
Oscillation
C2
C1
R2
R1
XIN
XOUT
Table 54.
Symbol
Value
XT1
XIN1/XOUT1
XTRTC
XIN32K/XOUT32K
20 MHz
48 MHz
32.768 KHz
R1
1 M
Ω
1 M
Ω
10 M
Ω
R2
0
Ω
0
Ω
0
Ω
C1
3 pF
3 pF
10 pF
C2
3 pF
3 pF
10 pF
60. Optimize the circuit constant for each product when you use this oscillation cell and ask to the manufacturer of the crystal oscillator to
investigate (matching investigation) because the best circuit constant changes depending on the specification of the crystal oscillator used
and the ambient surrounding (parasitic capacitance etc. of an external substrate).
61. The values of parts are for reference. There is a possibility that the adjustment is needed according to the situation of the set.
62. The following may be needed as the anti−noise measures of oscillation circuit.
− Be adjacent as much as possible, and shorten wiring between elements such as this LSI and the crystal oscillator.
− GND of the oscillation circuit close to GND (VSS) of this LSI as much as possible.
− Do not bring the wiring pattern of the large current drive close around the oscillation circuit.
− Take wide pattern to avoid the effect of interference of other signals.



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