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Technology Front

New HT45F2020 Sound Effect Generator MCU

Published: Mar 30,2016

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Holtek announces its new sound effect generator MCU, the HT45F2020. The device is suitable for applications which require sound effect generators such as car alarms, security alarms etc. but can be used in a host of other products. The device can also be used in vibration products such as electric toothbrushes, meal pagers etc. where different vibration effects may be required.

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As the device includes an internal shunt regulator it does not require an external zener diode or LDO buck IC to provide its wide operating voltage range of 8V~30V. The I/O ports can directly drive a piezo buzzer or a 100Ω~300Ω diaphragm speaker. Using an external audio amplifier the device can of course also drive a standard coil speaker. The device is supplied in a SOT23-6 package type.

To make the sound generation process a simple matter, Holtek provides a parameter software platform known as the Sound Effect Generator Wizard. This contains dozens of sound effects and can also simultaneously load up to eight different sound effects. There are also 200ms soft chirp and fade-in options. The software platform also provides an application circuit for users to reference and to accelerate their product design times.

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