TDA2613/N1 查看數據表（PDF） - Philips Electronics

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TDA2613/N1

6W hi-fi audio power amplifier

Philips Electronics 

Philips Semiconductors

6 W hi-fi audio power amplifier

Product specification

TDA2613

Input mute circuit

The input mute circuit operates only during switching on and off of the supply voltage. The circuit compares the 1⁄2 supply

voltage (at pin 3) with an internally fixed reference voltage (Vref), derived directly from the supply voltage. When the

voltage at pin 3 is lower than Vref the non-inverting input (pin 9) is disconnected from the amplifier. The voltage at pin 3

is determined by an internal voltage divider and the external 100 µF capacitor.

During switching on, a time delay is created between the reference voltage and the voltage at pin 3, during which the

input terminal is disconnected, (as illustrated in Fig.5).

Fig.5 Input mute circuit; time delay.

July 1994

9

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