Linear Technology's LTC1563-2IGN Active RC Lowpass Filter

The LTC1563-2IGN is a highly integrated active RC lowpass filter designed by Linear Technology, now part of Analog Devices, that significantly simplifies the design of an eighth-order lowpass filter. This product stands out for its easy-to-use feature set, which allows designers to implement high-performance filters without the need for any external resistors or capacitors to set the frequency.

Key Features

• Filter Order: The LTC1563-2IGN is an 8th-order filter, which provides excellent selectivity and a steep roll-off rate.
• Filter Type: It is a Butterworth filter, known for its maximally flat frequency response in the passband, ensuring minimal signal distortion.
• Cutoff Frequency: The filter features a factory-settable corner frequency from 1kHz to 150kHz, which can be adjusted using a single external resistor for fine-tuning.
• Low Noise: With its low noise design, the LTC1563-2IGN contributes minimal additional noise to the signal chain, preserving signal integrity.
• Low Distortion: The device offers low total harmonic distortion (THD), making it suitable for high-fidelity audio applications.
• Single Supply Operation: It operates from a single 5V supply, simplifying power supply design.
• Compact Package: The LTC1563-2IGN comes in a 16-pin narrow SSOP package, which is ideal for space-constrained applications.

Applications

The LTC1563-2IGN is perfect for a range of applications where a high-quality analog signal processing is required. It is particularly well-suited for:

• Anti-aliasing filters for data acquisition systems
• Lowpass filters for telecommunications
• Audio processing equipment
• ADC/DAC filtering
• Signal conditioning applications

Conclusion

The LTC1563-2IGN from Linear Technology is an exemplary solution for designers looking to implement an eighth-order lowpass filter with ease and precision. Its integration of active components, coupled with the ability to fine-tune the cutoff frequency, makes it a versatile choice for high-performance filtering applications across various industries. The combination of its Butterworth response, low noise, and low distortion characteristics ensures that the LTC1563-2IGN delivers a clean and accurate signal in a compact form factor.