UAF42 Universal Active Filter IC

Description

The UAF42 is a versatile "Universal Active Filter" that takes the complexity out of high-performance analog circuit design. Perfect for hobbyists and audio enthusiasts, this IC can be easily configured to function as a low-pass, high-pass, and band-pass filter simultaneously, with an additional uncommitted operational amplifier included for extra flexibility. It features internal high-precision 1000pF capacitors, which eliminate the common headache of sourcing tightly matched components for your filter projects. Whether you are working on audio equalization, noise reduction, or sensor signal conditioning, this 14-pin through-hole (DIP) package is breadboard-friendly and remarkably easy to use for creating stable, accurate filters without the need for complex calculations.

FEATURES

• Highly versatile: Simultaneously provides Low-Pass, High-Pass, and Band-Pass outputs.

• Simple Design: Uses a classic state-variable architecture.

• Built-in Precision: Includes internal 1% accuracy 1000pF capacitors and 0.5% resistors.

• Easy Customization: Frequency and Q-factor are easily set using external resistors.

• Low Distortion: High-quality operational amplifiers integrated on-chip.

• Extra Op-Amp: Features an auxiliary uncommitted op-amp for summing or gain stages.

• Broad Frequency Range: Capable of handling frequencies up to 100 kHz.

Applications

• Audio crossover networks and graphic equalizers.

• Noise rejection and anti-aliasing filters for ADCs.

• Signal conditioning for sensors and laboratory instruments.

• Biomedical instrumentation (EEG/ECG signal filtering).

• DIY Synthesizers and electronic music gear.

Parameters

• Package Type: 14-Pin PDIP (Through-Hole).

• Supply Voltage Range: ±6V to ±18V.

• Low Quiescent Current: 6mA (typical).

• Internal Capacitor Value: 1000pF (±1%).

• Operating Temperature Range: -25°C to +85°C.

• Filter Type: State-Variable (Universal).

• Maximum Operating Frequency: 100 kHz.