Specifications:

Two pole Butterworth Filter

Outputs for high pass and low pass

Digitally adjustable frequency control with custom software

Cutoff Frequency Range 160Hz to 20kHz

Input voltage 12 volts

 

Primary Parts List:

ATMEL 8515 MCU

Burr-Brown UAF42 Universal Active Filter

2 Analog Devices AD7376 Variable Resistors @1M ohm

Maxium RS-232 Driver/Receiver MAX233

Power Supply with +12V, -12V +5V

 

How it works.

 

 

To view the full schematic in Adobe PDF click HERE.

 

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