TS2007_11 Datasheet, PDF (24/29 Pages) STMicroelectronics – 3 W filter-free Class D audio power amplifer with 6-12 dB fixed gain select

Application information
TS2007
4.7
Note:
Shutdown time
When the standby command is set, the time required to put the two output stages into high
impedance and to put the internal circuitry in shutdown mode, is typically 5 ms. This time is
used to decrease the gain and avoid any pop noise during shutdown.
The gain decreases smoothly until the outputs are muted (see Figure 49).
4.8
Consumption in shutdown mode
Between the shutdown pin and GND there is an internal 300 kΩ resistor. This resistor forces
the TS2007 to be in shutdown when the shutdown input is left floating.
However, this resistor also introduces additional shutdown power consumption if the
shutdown pin voltage is not 0 V.
Referring to Table 2: Operating conditions on page 3, with a 0.4 V shutdown voltage pin for
example, you must add 0.4V/300k = 1.3 µA in typical (0.4V/273 k = 1.46 µA in maximum) to
the shutdown current specified in Table 5 to Table 9.
4.9
Single-ended input configuration
It is possible to use the TS2007 in a single-ended input configuration. However, input
coupling capacitors are needed in this configuration. The following schematic diagram
shows a typical single-ended input application.
Figure 50. Typical application for single-ended input configuration
Input
Gain Select Control
GS
Cin
4 IN-
-
Gain
3
Select ₊
IN+
Cin
Standby
Control
Standby
VCC
Cs
1uF
Vcc
PWM
TS2007
OUT+ 8
H
Bridge
5
OUT-
Oscillator
Gnd
Speaker
Standby Control
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Doc ID 13123 Rev 4