TS4995 datasheet(21/26 Pages) STMICROELECTRONICS

No de pièce	TS4995

Description	1.2 W fully differential audio power amplifier with selectable standby and 6 dB fixed gain

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Fabricant	STMICROELECTRONICS [STMicroelectronics]

Site Internet	http://www.st.com

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TS4995

Application information

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4.7

Shutdown time

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

impedance and the internal circuitry in shutdown mode is a few microseconds.

Note:

In shutdown mode, the Bypass pin and Vin+, Vin- pins are shorted to ground by internal

switches. This allows a quick discharge of Cb and Cin.

4.8

Pop performance

Due to its fully differential structure, the pop performance of the TS4995 is close to perfect.

However, due to mismatching between internal resistors Rin, Rfeed, and external input

capacitors Cin, some noise might remain at startup. To eliminate the effect of mismatched

components, the TS4995 includes pop reduction circuitry. With this circuitry, the TS4995 is

close to zero pop for all possible common applications.

In addition, when the TS4995 is in standby mode, due to the high impedance output stage in

this configuration, no pop is heard.

4.9

Single-ended input configuration

It is possible to use the TS4995 in a single-ended input configuration. However, input

coupling capacitors are needed in this configuration. The schematic diagram in Figure 58

shows an example of this configuration.

TS4995 Fiches technique(PDF) 21 Page - STMicroelectronics