参数资料
型号: TS4997
厂商: 意法半导体
英文描述: 2 x 1W differential input stereo audio amplifier with programmable 3D effects
中文描述: 2个1W的差分输入立体声音频放大器,可编程的3D效果
文件页数: 3/34页
文件大小: 434K
代理商: TS4997
TS4997
Typical application schematics
3/34
1
Typical application schematics
Figure 1
shows a typical application for the TS4997 with a gain of +6dB set by the input
resistors.
Figure 1.
Typical application schematics
Table 1.
External component descriptions
Components
Functional description
R
IN
Input resistors that set the closed loop gain in conjunction with a fixed internal
feedback resistor (Gain = R
feed
/R
IN
, where R
feed
= 50k
Ω
).
C
IN
Input coupling capacitors that block the DC voltage at the amplifier input
terminal. Thanks to common mode feedback, these input capacitors are
optional. However, if they are added, they form with R
IN
a 1st order high pass
filter with -3dB cut-off frequency (f
cut-off
= 1 / (2 x
π
x R
IN
x C
IN
)).
C
S
Supply bypass capacitors that provides power supply filtering.
C
B
Bypass pin capacitor that provides half supply filtering.
Cin1
330nF
Cb
1uF
Cs
1uF
Rin1
24k
Rin2
24k
1
2
4
3
1
1
1
5
6
14
12
11
9
10
8
7
BIAS
STBY
3D
EFFECT
LEFT
RIGHT
LIN-
RIN-
LIN+
RIN+
Bypass
GND
GND
LOUT-
LOUT+
ROUT-
ROUT+
-
+
+
-
S
S
3
3
Vcc
TS4997 - QFN16
Rin3
24k
Rin4
24k
Cin2
330nF
Cin3
330nF
Cin4
330nF
VCC
Left Speaker
8 Ohms
Right Speaker
8 Ohms
S
S
3
3
P1
Diff. input L-
P2
Diff. input L+
P3
Diff. input R-
P4
Diff. input R+
Optional
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