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BA6387K データシートの表示(PDF) - ROHM Semiconductor
部品番号
コンポーネント説明
メーカー
BA6387K
Preservo amplifier for CD players
ROHM Semiconductor
BA6387K Datasheet PDF : 13 Pages
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Optical disc ICs
(1) LOOP ON timing
When FOK turns high, the fall of FE’ is detected and the
FOCUS LOOP turns ON.
FE' (pin31)
0.4V
0.2V
pin8
FZC (internal)
RFO (pin23)
FOK (pin12)
0.3V
FOCUS LOOP ON (internal)
Fig.4 LOOP ON timing
BA6387K
(2) LOOP OFF timing
After FOK turns low, the FOCUS LOOP turns OFF after
the delay T (s) shown in the figure below.
RFO (pin23)
0.3V
FOK (pin12)
pin8
FOCUS LOOP ON (internal)
V
B
T
T=14E3
⋅
C
⋅
In (1+1.5 / V
CC
) [S]
Fig.5 LOOP OFF timing
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