TS2007FC datasheet(26/33 Pages) STMICROELECTRONICS

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Application information

TS2007FC

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DocID14937 Rev 4

4.6

Wakeup time (twu)

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

TS2007FC has an internal digital delay that mutes the outputs and releases them after this

time in order to avoid any pop noise.

Note:

The gain increases smoothly (see Figure 43 and Figure 44) from the mute to the gain

selected by the GS pin (Section 4.2).

4.7

Shutdown time

When the standby command is set to high, the time required to put the two output stages

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

This time is used to decrease the gain and avoid any pop noise during shutdown.

Note:

The gain decreases smoothly until the outputs are muted (see Figure 43 and Figure 44).

4.8

Consumption in shutdown mode

Between the shutdown pin and GND there is an internal 300 k

Ω resistor. This resistor forces

the TS2007FC 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 does not equal 0 V. This extra current is provided by the device that

drives the standby pin of the amplifier.

Referring to Table 2: Operating conditions, with a 0.4 V shutdown voltage pin for example,

you must add 0.4 V/300 k = 1.3 µA in typical (0.4 V/273 k = 1.46 µA maximum) to the

shutdown current specified in Table 5 to Table 9.

4.9

Single-ended input configuration

It is possible to use the TS2007FC 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.

TS2007FC Datenblatt(PDF) 26 Page - STMicroelectronics