ba3570fs ROHM Co. Ltd., ba3570fs Datasheet - Page 7

• Manufacturer Part Number: ba3570fs
• Description: Als Headphone Driver
• Manufacturer: ROHM Co. Ltd.

FExplanation of ALS operation and attached compo-
nents
(1)
The ALS system control circuit is shown in Fig. 9.
S ALS mode switching table
S ALS SW external connection value: C13
By increasing the capacitance of C13, the switching
sound made when ALS is turned on or off can be re-
duced, however, the switching time will increase. Set the
value appropriately for the application.
S ALS external connection value: C14
The ALC attack and recovery time for ALS is determined
by C14 connected to the pin (Pin 9).
560
Audio ICs
ALS system control circuit
FMute amplifier (pin numbers are for 22-pin BA3570F)
The output muting can be switched on or off.
FMute switching table
FMUTE SW external connection value: C8
By increasing the capacitance of C8, the switching
sound made when the mute is turned on or off can be
reduced, however, the switching time will increase. Set
the value appropriately for the application.
BA3570F / BA3570FS