MSA180 Просмотр технического описания (PDF) - Oki Electric Industry

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производитель

MSA180

Piezo Speaker Amplifier

Oki Electric Industry 

¡ Semiconductor

MSA180

Application Example for Circuits Containing the MSM6388/MSM6588 Speech Recorders

The example below shows how to connect the MSA180 with the MSM6388 or MSM6588 family

speech recording ICs using the recorders' STBY output to control operation and standby mode of the

MSA180. As voice output stops, STBY rises to the "H" level. For this reason, MODE2 is used to control

operation and standby modes of the MSA180.

VDD

VDD

AOUT

MSM6388 CS3(STBY)

or MSM6588

GND

BASE

VCC

PIEZO SPEAKER

MODE2

SP

R1

C1 AIN MSA180

MODE1

SP

GND

Notes: 1. The diode on AOUT reduces pop noise.

2. This circuit makes use of the STBY output of the speech synthesizer.

3. As the voice reproduction stops, STBY outputs a "H" level to MODE2, setting the stand-

by function.

4. If MODE2 is used, MODE1 must be connected to GND.

5. Leave the BASE pin open if it is not used.

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