TS4956 datasheet(45/51 Pages) STMICROELECTRONICS

Part #	TS4956

Description	Stereo audio amplifier system with I2C bus interface

PDF	51 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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45 / 51 page

TS4956

Application information

45/51

4.9

Pop and click performance

The TS4956 has internal pop and click reduction circuitry which eliminates the output

transients, such as for example during switch-on or switch-off phases, or during a switch

from one output mode to another, or when changing the volume. The performance of this

circuitry is closely linked to the values of the input capacitor Cin, the output capacitor Cout

(for single-ended configuration) and the bias voltage bypass capacitor Cb.

The values of Cin and Cout are determined by the lower cut-off frequency value requested.

The value of Cb will affect the THD+N and PSRR values in lower frequencies.

The TS4956 is optimized to have low pop and click in the typical schematic configurations

(see

Figure 1 on page 3 and Figure 2 on page 4).

4.10

Thermal shutdown

The TS4956 device has internal thermal shutdown protection in the event of extreme

temperatures. Thermal shutdown is active when the device reaches temperature 150°C.

TS4956 Datasheet(PDF) 45 Page - STMicroelectronics