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ENG3090B Datasheet(PDF) 49 Page - List of Unclassifed Manufacturers

Part # ENG3090B
Description  MT6516 Design Notice V1.0
PDF  212 Pages
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Manufacturer  ETC2 [List of Unclassifed Manufacturers]
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ENG3090B Datasheet(HTML) 49 Page - List of Unclassifed Manufacturers

Back Button ENG3090B Datasheet HTML 45Page - List of Unclassifed Manufacturers ENG3090B Datasheet HTML 46Page - List of Unclassifed Manufacturers ENG3090B Datasheet HTML 47Page - List of Unclassifed Manufacturers ENG3090B Datasheet HTML 48Page - List of Unclassifed Manufacturers ENG3090B Datasheet HTML 49Page - List of Unclassifed Manufacturers ENG3090B Datasheet HTML 50Page - List of Unclassifed Manufacturers ENG3090B Datasheet HTML 51Page - List of Unclassifed Manufacturers ENG3090B Datasheet HTML 52Page - List of Unclassifed Manufacturers ENG3090B Datasheet HTML 53Page - List of Unclassifed Manufacturers Next Button
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49
External RC value
External RC value
▪
RC value on mp3_out path
1) Bandwidth:
2) Amplitude degradation:
3) Larger resistance, better bass, smaller volume;
4) Larger capacitance, better bass, higher cost, larger PCB area.
5) Pout < Earphone speaker rated power
6) example:
•
(R1, C, Fc, Amplitude)
– (
100ohm, 47uF, 25.65Hz, -12.3dB)
RC
f
c
π
2
1
=
2
1
2
log
20
]
[
R
R
R
dB
amplitude
+
=
C
47u (4V)
C
47u (4V)
150
R1
HP Jack
1
2
3
150 R1
AGND
MP3_OUTR
MP3_OUTL
R1
C
R2
R=R1+R2
2
)
(
2
R
V
P
rms
out
=



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