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TS4909 Datasheet(PDF) 3 Page - STMicroelectronics

No. de pieza TS4909
Descripción Electrónicos  Dual mode low power 150mW stereo headphone amplifier with capacitor-less and single-ended outputs
PDF  32 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TS4909 Datasheet(HTML) 3 Page - STMicroelectronics

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TS4909
Typical application schematics
3/32
1
Typical application schematics
Figure 1.
Typical applications for the TS4909
Table 1.
Application component information
Component
Functional description
Rin1,2
Inverting input resistor that sets the closed loop gain in conjunction with Rfeed. This
resistor also forms a high pass filter with Cin (fc = 1 / (2 x Pi x Rin x Cin)).
Cin1,2
Input coupling capacitor that blocks the DC voltage at the amplifier’s input terminal.
Rfeed1,2
Feedback resistor that sets the closed loop gain in conjunction with Rin.
AV= closed loop gain = -Rfeed/Rin.
Cb
Half supply bypass capacitor.
Cs
Supply bypass capacitor that provides power supply filtering.
Vin1
Vin2
Rin1
Rin2
Rfeed1
Rfeed2
Cin1
330nF
Cin2
BIAS
Gnd
Vcc
Cs
1µF
20k
20k
20k
330nF
Vout1
Vout2
Vout3
Standby
20k
Phantom ground configuration
Single-ended configuration
Cout1
Cout2
Cb
1µF
Vin1
Vin2
Rin1
Rin2
Rfeed1
Rfeed2
Cin1
330nF
Cin2
BIAS
Gnd
Vcc
Cs
1µF
20k
20k
20k
330nF
Vout1
Vout2
Vout3
Standby
20k
Cb
1µF
SE/PHG
SE/PHG



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