800

Audio ICs

BA3853BFS

FApplication notes

(1)

Power supply voltage range

Operation of the basic functions of the application exam-

ple circuit are guaranteed if operated within the stipulated

power supply voltage and ambient temperature ranges.

Rohm cannot guarantee the ratings for the electrical

characteristics, but these will not change radically if the

circuit is operated within the stipulated power supply volt-

age and ambient temperature ranges.

(2)

Mute circuits

Both the main volume and fader volume circuits have a

built-in mute circuit. Mute is applied to all output pins.

Mute logic

(3)

Loudness control

with the main volume.

attenuation is

*30dB or lower. Up to a signal attenuation

of

*10dB, the circuit is designed to have a change in

loudness of 0dB.

*10dB to *30dB,

the change in loudness is smaller approaching

*10dB,

and gets larger approaching

*30dB.

if the amount of boost due to the combined tone boost

and loudness exceeds the maximum boost, the circuit

design ensures that the amount of loudness change will

not exceed the maximum amount of tone boost (see

Figs. 6 and 7).

and off above 2.5V.

(4)

Balance / fader

The balance control curve has been designed so that at

above 2.8V, channel 1 (1-Fr, 1-Rr) is attenuated, and at

below 2.2V, channel 2 (2-Fr, 2-Rr) is attenuated.

The fader control curve has been designed so that at be-

low 2.2V, the front (1-Fr, 2-Fr) is attenuated, and at above

2.8V, the rear (1-Rr, 2-Rr) is attenuated.

(5)

Input / output circuits

Buffers are used before and after the signal input and

output pins.