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TS4999 bảng dữ liệu(PDF) 28 Page - STMicroelectronics

tên linh kiện TS4999
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TS4999 bảng dữ liệu(HTML) 28 Page - STMicroelectronics

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Application information
TS4999
28/36
4.7
Consumption in shutdown mode
Between the shutdown pin and GND there is an internal 300 k
Ω (+-/20%) resistor. This
resistor forces the TS4999 to be in shutdown mode when the shutdown input is left floating.
However, this resistor also introduces additional shutdown power consumption if the
shutdown pin voltage is not at 0 V.
With a 0.4 V shutdown voltage pin for example, you must add 0.4 V/300 k
Ω = 1.3 µA typical
(0.4 V/240 k
Ω = 1.66 µA in maximum) for each shutdown pin to the standby current
specified in Table 8, Table 9 and Table 10.
Of course, this current will be provided by the external control device for standby pins.
4.8
Single-ended input configuration
It is possible to use the TS4999 in a single-ended input configuration. Input coupling
capacitors are also mandatory in this configuration. The schematic diagram in Figure 59
shows a typical single-ended input application.
Figure 59.
Typical single-ended input application
TS4999
Left speaker
Right speaker
Cin
Cin
Left Input
Cin
Cin
Right Input
Standby C ontrol
VCC
CsL
1uF
Cs
0.1uF
Gain Select
Control
CsR
1uF
3D Effect
Control
VCC
VCC
Gain
Select
Oscillator
PWM
PWM
Gain
Select
Standby
Control
Protection
Circuit
Bridge
H
Bridge
H
Lin+
Lin-
G0
G1
Rin+
Rin-
STBYL
STBYR
Lout+
A5
A7
E5
E7
E3
A3
D2
E1
C5
C3
B2
A1
Lout-
Rout+
Rout-
RPVCC
PGND
AGN D
AVCC
LPVC C



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