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STA321 Datasheet(PDF) 73 Page - STMicroelectronics

No. de pieza STA321
Descripción Electrónicos  4-channel digital audio system with FFX??driver
PDF  157 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STA321 Datasheet(HTML) 73 Page - STMicroelectronics

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STA321
Headphone detection
Doc ID 15351 Rev 3
73/157
12.1
Applications circuits
Two applications circuits are given here, one for the binary single-ended application and one
for the binary headphone application.
Figure 51.
Headphone detection circuit for single-ended configuration
Figure 52.
Headphone detection circuit for binary HP configuration
HP_DET1
HP_DET
I
2C
100 k
1 k
VCC33
TUD_EN
HP_DET2
Filter
FFX
modulator
CMOS
bridge
EAPWM
out
L1
L2
1 k
5 k
HP_DET_FILT
VCC33
HP_DET1
HP_DET
I
2C
100 k
1 k
VCC33
TUD_EN
HP_DET2
FFX
modulator
CMOS
bridge
EAPWM
out
L1
L2
1 k
5 k
hp_det_filt
VCC33
L3
1 k
Filter



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