ELM412 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.
ELM412 Key Features
- Low power CMOS design
- Wide supply range
- 3.0 to 5.5 volt operation
- No external timing elements required
- Generates eight mon piezo frequencies
- Bridged output for greater audio power
- Modified waveform for reduced harmonics