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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