729

Audio ICs

BA336 / BA338 / BA338L

FCircuit operation

The BA336 / BA338 / BA338L operates according to

the timing shown in Fig. 2. When the input signal is below

the input decision level, the electrical potential of Pin 2

which sets the mute detection time inverts. At this point

the potential of Pin 1 begins to rise according to the time

val from the inverting of the mute detection time

comparator to the inverting of the pulse width compara-

tor, the output is high. When the power is turned on or

muting is turned off, a reset pulse is generated for a cer-

tain period of time (determined by the Pin 6 capacitor),

the internal flip-flop resets, and an output pulse is not

generated. When an input signal comes in after this, the

flip-flop resets, mute detection goes on standby, and an

output pulse is obtained with each song gap.If the mute

of silence in songs.