TLC14CDR

Overview

The TLC14CDR is a fourth-order Butterworth low-pass switched-capacitor filter manufactured by Texas Instruments. It integrates analog filtering functions within a single monolithic integrated circuit, eliminating the need for external passive components such as resistors and capacitors typically required in discrete active filter designs. The device operates using an external clock signal to define its cutoff frequency characteristics, providing precise and stable filtering performance suitable for various signal processing applications.

Feature Summary

• Integrates fourth-order Butterworth low-pass filtering response without requiring external passive components
• Utilizes switched-capacitor technology for precise frequency control via external clock input
• Provides stable and accurate analog filtering characteristics within a compact integrated circuit

Applications

• Signal conditioning circuits requiring precise low-pass filtering
• Data acquisition systems needing anti-aliasing filters
• Audio processing equipment utilizing switched-capacitor techniques

Procurement Notes

Verify the specific datasheet revision and manufacturing date code upon procurement. Confirm that the external clock source meets the voltage and frequency requirements specified in the official Texas Instruments documentation. Ensure compatibility with the system's power supply voltages and logic levels before integration into the final design.

Selection Notes

Select this component when a fourth-order Butterworth response is required without the complexity of discrete component matching. Consider the dependency on an external clock signal for defining the filter's cutoff frequency. Evaluate the available board space for the clock generation circuitry alongside the filter IC itself.

Part Context

The TLC14 belongs to the family of switched-capacitor filters offered by Texas Instruments. These devices are designed to replace traditional RC active filters, offering improved accuracy and reduced sensitivity to temperature variations. The CD suffix indicates a plastic small-outline package variant suitable for surface-mount assembly.

Replacement Considerations

Public confirmed substitute part numbers include TLC04CDR and MF4CN-100. Verify pinout compatibility and electrical specifications against the original design requirements before substitution.