LTC1264CSW#TRPBF

Overview

The LTC1264CSW#TRPBF is a high-speed, quad universal filter building block from Analog Devices Inc. It integrates four identical second-order switched-capacitor sections within a 24-lead SOIC-Wide package. The device operates on power supplies ranging from ±2.375V to ±8V and supports center frequencies up to 250kHz with a standard clock-to-center frequency ratio of 20:1. Key electrical characteristics include a gain-bandwidth product of 7MHz, a slew rate of 10V/µs, and a maximum clock frequency of 6MHz at ±7.5V. Power supply current typically draws 14mA at ±5V, with a maximum DC offset voltage of ±45mV for the integrators.

Feature Summary

• Integrates four identical second-order switched-capacitor filter sections in a single package
• Features double-sampling architecture to improve aliasing performance
• Supports multiple operational modes including Mode 1, Mode 1b, Mode 2, and Mode 3 for versatile filter configurations
• Provides low noise and low harmonic distortion suitable for precision signal processing

Applications

• Digital communications systems
• Spread spectrum communications
• Spectral analysis equipment
• Loran receivers
• General instrumentation

Procurement Notes

Verify the component authenticity by checking the manufacturer markings against official lead-free part marking guidelines. Confirm the specific ordering suffix matches the required tape and reel packaging format. Ensure the supplier provides valid traceability documentation to guarantee compliance with RoHS standards and prevent counterfeit parts in the supply chain.

Selection Notes

Select this component when designing filters requiring center frequencies up to 250kHz with precise clock tuning capabilities. Consider the available operational modes to determine if the fixed 20:1 ratio or adjustable ratios meet the design specifications. Evaluate the power supply requirements and ensure the operating temperature range aligns with the application environment constraints.

Part Context

This part belongs to the LTC1264 family of high-speed switched-capacitor filters. It is functionally equivalent to the LTC1264CN but utilizes a wide SOIC package instead of a plastic DIP. The #TRPBF suffix indicates it is supplied in a tape and reel format and is lead-free compliant. This variant is designed for surface-mount assembly processes.

Replacement Considerations

The LTC1264CN serves as a direct pin-compatible alternative using a different package style. Customized versions with internal thin-film resistors are available upon request from the manufacturer.