LTC1064CN#PBF

Overview

The LTC1064CN#PBF is a low noise, fast quad universal filter building block manufactured by Analog Devices Inc. It consists of four high-speed switched-capacitor filter sections housed in a 24-lead plastic DIP package. The device supports a maximum center frequency of 140kHz and operates with power supplies ranging from ±2.375V to ±8V. It features clock-to-center frequency ratios of 50:1 and 100:1 simultaneously available via Pin 17 configuration. The operating temperature range for this variant is -40°C to +85°C.

Feature Summary

• Contains four independent second-order switched-capacitor filter building blocks capable of realizing various filter functions including lowpass, highpass, bandpass, and notch responses.
• Offers flexible clock-to-center frequency ratio selection allowing simultaneous operation at 50:1 or 100:1 ratios through external pin configuration.
• Provides low offset voltage characteristics and reduced wideband noise compared to previous generation devices in the series.

Applications

• Anti-aliasing filters
• Wide frequency range tracking filters
• Spectral analysis systems
• Loop filters

Procurement Notes

Verify the specific ordering suffix #PBF indicates lead-free compliance when sourcing components. Confirm that the CN package designation corresponds to the 24-lead plastic DIP format required for the target assembly process. Ensure the AC/C grade matches the intended thermal operating environment specifications.

Selection Notes

Select this component when designing circuits requiring multiple synchronized filter stages within a single integrated circuit. Consider the maximum clock frequency limitations relative to the desired center frequencies. Evaluate the need for external buffering if driving low impedance loads or coaxial cables to maintain signal integrity.

Part Context

This part belongs to the LTC1064 family of universal filter building blocks. It serves as a versatile alternative to discrete active filter designs, consolidating four second-order sections into one package. The CN suffix specifically denotes the plastic dual in-line package variant suitable for general-purpose prototyping and production.

Replacement Considerations

The J Package (Ceramic DIP) is listed as an alternate source option. Users should verify pin compatibility and thermal performance differences between the plastic and ceramic variants before substitution.