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ELM412

Part Number	ELM412
Manufacturer	ELM
Description	Piezo Element Driver
Published	Dec 20, 2013
Detailed Description	ELM412 Piezo Element Driver Description The ELM412 is an 8 pin oscillator circuit for driving piezo-electric elements. W...
Datasheet	ELM412 PDF File

Overview

ELM412 Piezo Element Driver Description The ELM412 is an 8 pin oscillator circuit for driving piezo-electric elements.
With the exception of one external resistor, all of the circuitry required to drive a typical piezo ‘bender’ is contained within this chip.
This circuit allows the user to select one of eight possible operating frequencies by way of three logic level inputs.
These eight frequencies represent some of the more common resonant frequencies used for piezo elements.
If desired, the frequency can be continually varied by the controlling circuit.
The output of the ELM412 uses a bridge configuration to obtain maximum audio drive for a given power supply level.
A single input pin is a...

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