MSA180 View Datasheet(PDF) - Oki Electric Industry

Part Name

Description

Manufacturer

MSA180

Piezo Speaker Amplifier

Oki Electric Industry 

¡ Semiconductor

PIN CONFIGURATION (TOP VIEW)

MODE2 1

AIN 2

GND 3

SP 4

8 MODE1

7 BASE

6 VCC

5 SP

8-Pin Plastic DIP or 8-Pin Plastic SOP

MSA180

PIN DESCRIPTIONS

Pin

Symbol

Type

Description

6

VCC

— Power supply pin.

3

GND

— Ground pin.

2

AIN

I

Voice signal input pin.

This pin switches the device between operation and standby modes.

8

MODE1

I

The IC is in operation mode if VIH > 1.0 V on the MODE1 pin and is in

standby mode if VIL < 0.3 V on the MODE1 pin. When MODE1 is used,

MODE2 must be connected to VCC.

This pin switches the device between operation and standby modes.

1

MODE2

I

The IC is in operation mode if VIL < VCC–1.0 V on MODE1 pin and is in

standby mode if VIH > VCC–0.3 V on MODE1 pin. When MODE2 is used

MODE1 must be connected to GND.

This pin is connected to the base of an external transistor. If an

7

BASE

O

external transistor is not used to control system voltage, this pin must

be left open.

4

SP

This is a speaker output pin that provides signals with the same phase

O

as the input.

This is a speaker output pin that provides signals with an inverted

5

SP

O

phase to the input.

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