TS2012IQT View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

TS2012IQT

Filter-free stereo 2x2.8W class D audio power amplifer

STMicroelectronics 

Application information

TS2012

4.6

Note:

Wake-up time (twu)

When the standby is released to set the device ON, there is a delay of 1ms typically. The

TS2012 has an internal digital delay that mutes the outputs and releases them after this

time in order to avoid any pop noise.

The gain increases smoothly (see Figure 44) from the mute to the gain selected by the G1

and G0 pin (Section 4.2).

4.7

Note:

Shutdown time

When the standby command is set, the time required to set the output stage considered into

high impedance and to put the internal circuitry in shutdown mode, is typically 1ms. 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 44).

4.8

Consumption in shutdown mode

Between the shutdown pin and GND there is an internal 300kΩ (+-/20%) resistor. This

resistor forces the TS2012 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 0V.

With a 0.4V shutdown voltage pin for example, you must add 0.4V/300kΩ=1.3µA in typical

(0.4V/240kΩ=1.66µA in maximum for each shutdown pin) to the standby current specified in

Table 5 to Table 7. Of course, this current will be provided by the external control device for

standby pins.

4.9

Single-ended input configuration

It is possible to use the TS2012 in a single-ended input configuration. However, input

coupling capacitors are mandatory in this configuration. The schematic diagram in Figure 45

shows a typical single-ended input application.

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