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TS4962 データシート(PDF) 33 Page - STMicroelectronics

部品番号 TS4962
部品情報  2.8 W filter-free mono class D audio power amplifier
PDF  44 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TS4962 データシート(HTML) 33 Page - STMicroelectronics

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TS4962
Application information
44
4.9
Single-ended input configuration
It is possible to use the TS4962 in a single-ended input configuration. However, input
coupling capacitors are needed in this configuration. Figure 61 shows a typical single-ended
input application.
Figure 61. Single-ended input typical application
All formulas are identical except for the gain with Rin in kΩ.
Due to the internal resistor tolerance we have:
In the event that multiple single-ended inputs are summed, it is important that the
impedance on both TS4962 inputs (In- and In+) be equal.
Figure 62. Typical application schematic with multiple single-ended inputs
Rin
Rin
Cs
1u
GND
GND
Vcc
SPEAKER
Cin
Cin
Ve
GND
GND
Standby
In-
Stdby
In+
Out-
Out+
Vcc
1
4
3
7
8
6
5
GND
Internal
Bias
PWM
Output
Bridge
H
Oscillator
150k
150k
+
-
A
V
gle
sin
V
e
Out
+
Out
-
–
-------------------------------
300
R
in
----------
=
=
273
R
in
----------
A
V
g le
sin
327
R
in
----------
≤
≤
Rin1
Req
Cs
1u
GND
GND
Vcc
SPEAKER
Cin1
Ceq
Ve1
GND
GND
Standby
Rink
Cink
Vek
GND
In-
Stdby
In+
Out-
Out+
Vcc
1
4
3
7
8
6
5
GND
Internal
Bias
PWM
Output
Bridge
H
Oscillator
150k
150k
+
-



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