TS4972IJT STMicroelectronics, TS4972IJT Datasheet - Page 24

• Manufacturer Part Number: TS4972IJT
• Description: 1.2W POWER AUDIO AMPLIFIER WITH STANDBY MODE ACTI
• Manufacturer: STMicroelectronics

TS4972
Application n°3 : 50Hz to 10kHz bandwidth and
10dB gain BTL power amplifier.
Components :
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.
24/28
R1
R2
R4
R6
R7
R8
C2
C5
C6
C7
C9
C10
C12
S1, S2, S6, S7
S8
P1
Designator
G
V D I FF
33k / 0.125W
Short Circuit
22k / 0.125W
Short Cicuit
100k / 0.125W
Short Cicuit
470pF
150nF
100µF
100nF
Short Circuit
Short Circuit
1µF
2mm insulated Plug
10.16mm pitch
3 pts connector 2.54mm
pitch
SMB Plug
= 2
R1
------- -
R4
Part Type
Fig. 84 :
Voltage
For Vcc=5V, a 20Hz to 20kHz bandwidth and 20dB
gain BTL power amplifier you could follow the bill
of material below.
Components :
R1
R4
R5
R6
R7
R8
C4
C5
C6
C7
C9
C10
C12
S1, S2, S6, S7
S8
P1, P2
40
35
30
25
20
15
10
2.5
Designator
Minimum Differential Gain vs Power Supply
3.0
Power Supply Voltage (V)
3.5
4.0
110k / 0.125W
22k / 0.125W
22k / 0.125W
110k / 0.125W
100k / 0.125W
Short circuit
470nF
470nF
100µF
100nF
Short Circuit
Short Circuit
1µF
2mm insulated Plug
10.16mm pitch
3 pts connector 2.54mm
pitch
SMB Plug
4.5
Part Type
5.0
5.5