KA9270 데이터 시트보기 (PDF) - Samsung
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KA9270 Datasheet PDF : 7 Pages
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KA9270
3. MUTE
R6
Vi
RQON
-
+
AUDIO FILTER
Where:
RQON = internal TR
ON resistance
Vo
Fig. 5 Equivalent Circuit of Mute Switch ON Mode
Mute attenuation [M (att)] ratio is as follow;
M (att) = 20 log VO
VI
= 20 log RQON (dB)
R6
4. LOW PASS FILTER
R3
Vi
R2
C3
R1
C4
-
+
Fig. 6 Equivalent Circuit of LPF
Cut off frequency (FC) is as follow:
fC =
1
2π√R2 R1 C3 C4
(Hz)
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