Multimedia ICs
BA7760 / BA7760F
Block diagram
•
–
MIC AMP CH 1
MIC AMP CH 2
–
–
Pin descriptions
•
Pin No.
Pin name
RIPPLE FILTER Ripple filter
Function
Pin type
Base (NPN) // 15kΩ
—
1
2
GND
GND
3
MIC IN ( + ) Ch1
MIC IN ( – ) Ch1
FILTER Ch1
MIC OUT Ch1
MIX IN
CH1 microphone amplifier input ( + ) Base (NPN) // 120kΩ
4
CH1 microphone amplifier input ( – ) Base (NPN)
5
CH1 microphone amplifier fc
CH1 microphone amplifier output
Mixer buffer input
Base (NPN) ~ 450Ω
Push-pull
6
7
Base (NPN) // 65kΩ
Push-pull
8
MIX OUT
Mixer buffer output
9
MIC OUT Ch2
FILTER Ch2
MIC IN ( + ) Ch2
MIC IN ( – ) Ch2
MUTE CTRL
VCC
CH2 microphone amplifier output
CH2 microphone amplifier fc
Push-pull
10
11
12
13
14
Base (NPN) ~ 450Ω
CH2 microphone amplifier input ( – ) Base (NPN)
CH2 microphone amplifier input ( + ) Base (NPN) // 120kΩ
Mute control
Fig.1
VCC
—
“Parallel” and “series” respectively refer to parallel and series insertion. All figures are standard values.
2
ROHM [ ROHM ]
