The resistor programmable continuous audio active filter IC is a CMOS chip that can be configured for either a lowpass, bandpass, highpass, allpass or notch filter. Butterworth, Bessel, elliptic and Chebyshev filters can be implemented. The frequency range covers the audio spectrum to 20 kHz. There is a low power version with a frequency range to 5kHz. There is a power down pin to reduce current consumption when the filter is not in use. The 8 pin part is a single filter stage, the 16pin part offers a dual filter stage. Between 2 and 5 external resistors set the filter characteristics depending on the desired response. Q can be set from between 0.25 and 50. No clock signal is required.

• Independent Q. frequency and gain adjustments
• Low sensitivity to external resistor variation
• Operates up to 20 kHz
• Low Power Operation
• Low Voltage Operation
• On Chip Power Save Pin
• Cascadeble for Higher Order Filtering

• Spectrum Analyzers
• General Purpose Systems
• Portable Systems
• Anti-Alias Filters
• Reconstruction Filters
• Telecommunications
• Tracking Filters
• Harmonic Analysis
• Noise Analysis
• Data Communication
• Wireless Applications