BA7760 データシートの表示（PDF） - ROHM Semiconductor

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BA7760

Microphone Amplifier

ROHM Semiconductor 

Multimedia ICs

•Block diagram

–

– MIC AMP CH 1

MIC AMP CH 2

–

BA7760 / BA7760F

•Pin descriptions

Pin No.

Pin name

Function

Pin type

1 RIPPLE FILTER Ripple filter

Base (NPN) // 15kΩ

2 GND

GND

—

3 MIC IN ( + ) Ch1 CH1 microphone amplifier input ( + ) Base (NPN) // 120kΩ

4 MIC IN ( – ) Ch1 CH1 microphone amplifier input ( – ) Base (NPN)

5 FILTER Ch1

CH1 microphone amplifier fc

Base (NPN) ~ 450Ω

6 MIC OUT Ch1 CH1 microphone amplifier output

Push-pull

7 MIX IN

Mixer buffer input

Base (NPN) // 65kΩ

8 MIX OUT

Mixer buffer output

Push-pull

9 MIC OUT Ch2 CH2 microphone amplifier output

Push-pull

10 FILTER Ch2

CH2 microphone amplifier fc

Base (NPN) ~ 450Ω

11 MIC IN ( + ) Ch2 CH2 microphone amplifier input ( – ) Base (NPN)

12 MIC IN ( – ) Ch2 CH2 microphone amplifier input ( + ) Base (NPN) // 120kΩ

13 MUTE CTRL

Mute control

Fig.1

14

VCC

VCC

—

∗ “Parallel” and “series” respectively refer to parallel and series insertion. All figures are standard values.

2

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