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TS4972 Fiches technique(PDF) 25 Page - STMicroelectronics

No de pièce TS4972
Description  1.2W Audio Power Amplifier with Standby Mode Active High
PDF  30 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TS4972 Fiches technique(HTML) 25 Page - STMicroelectronics

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Application Information
TS4972
25/30
Application n°4 : Differential inputs BTL power
amplifier
In this configuration, we need to place these
components : R1, R4, R5, R6, R7, C4, C5, C12.
We have also : R4 = R5, R1 = R6, C4 = C5.
The differential gain of the amplifier is:
Note : Due to the VICM range (see Operating
Condition), GVDIFF must have a minimum value
shown in figure 84.
For Vcc=5V, a 20Hz to 20kHz bandwidth and
20dB gain BTL power amplifier you could follow
the bill of material below.
Components:
C10
Short Circuit
C12
1µF
S1, S2, S6, S7
2mm insulated Plug
10.16mm pitch
S8
3 pts connector 2.54mm
pitch
P1
SMB Plug
Figure 84: Minimum Differential Gain vs
Power Supply Voltage
Designator
Part Type
G VDIFF = 2
R1
R4
--------
2.5
3.0
3.5
4.0
4.5
5.0
5.5
10
15
20
25
30
35
40
Power Supply Voltage (V)
Designator
Part Type
R1
110k / 0.125W
R4
22k / 0.125W
R5
22k / 0.125W
R6
110k / 0.125W
R7
100k / 0.125W
R8
Short circuit
C4
470nF
C5
470nF
C6
100µF
C7
100nF
C9
Short Circuit
C10
Short Circuit
C12
1µF
S1, S2, S6, S7
2mm insulated Plug
10.16mm pitch
S8
3 pts connector 2.54mm
pitch
P1, P2
SMB Plug



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