Multimedia ICs
BA7760 / BA7760F
Output from these dual amplifiers is level-adjusted with
an attached volume control (VR) and then input to pin
7 and mixed by the mixer buffer amplifier. The ON /
OFF operation of the mixer buffer amplifier can be con-
trolled with the signal input to pin 13 (MUTE CTRL).
For DC loads, this volume control (VR) should be set
above 4.5kΩ to assure proper performance of the IC’s
internal driver.
Mode
MUTE
MUTE
Control signal
Operation
Muted
L
H
Normal operation
Application example
•
10kΩ
MIX BF
+
8
7
6
5
4
3
2
1
10µF
–
9
5kΩ
1µF
(VR)
5kΩ
(VR)
1µF
10
R6
+
+
–
–
R7
R4
11
12
13
14
220Ω
220Ω
47µF
47µF
4.7µF
4.7µF
2.2kΩ
2.2kΩ
22µF
BA7760 / F
Fig. 4
5
ROHM [ ROHM ]
