TS4962_07 STMICROELECTRONICS [STMicroelectronics], TS4962_07 Datasheet - Page 37

• Manufacturer Part Number: TS4962_07
• Description: 2.8W filter-free mono class D audio power amplifier
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

TS4962
4.11
Example 1: Dual differential inputs
Figure 63. Method for shorting pertubations to ground
In the case where the distance between the TS4962 output and the speaker terminals is
high, it's possible to have low frequency EMI issues due to the fact that the typical operating
frequency is 250kHz. In this configuration, we recommend using an output filter (as
represented in
close as possible to the device.
Several examples with summed inputs
Figure 64. Typical application schematic with dual differential inputs
With (R
i
in kΩ):
0.5V
Figure 1: Typical application schematics on page
From TS4962 output
≤
E2+
E1+
E1-
E2-
Standby
V
------------------------------------------------------------------------------------------------------------------------------- - V
CC
R2
R1
×
R1
R2
R
V
IC
1
300
×
1
1
4
3
=
R
×
Stdby
In-
In+
2
E
------------------------
A
A
(
+
1
V
V
Ferrite chip bead
+
R
-
+
1
2
300
150k
150k
1
2
+
=
=
Oscillator
+
Internal
E
Bias
Out
------------------------------ -
Out
------------------------------ -
R
1
×
E
E
-
2
(
1
2
)
V
and V
+
+
+
+
+
PWM
IC1
–
–
–
–
2
Gnd
Out
E
Out
E
×
×
1
2
-
-
R
about 100pF
R
IC
-
-
Output
Bridge
1
2
=
=
2
Vcc
GND
7
GND
×
H
+
To speaker
=
6
300
--------- -
300
--------- -
R
Out+
Out-
R
R
V
2
E
------------------------
IC2
1
2
2
+
5
8
×
2
+
E
GND
R
Vcc
2
1
SPEAKER
-
)
8). It should be placed as
≤
Cs
1u
Application information
CC
–
0.8V
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