Overview

Features and Benefits

  • High Speed, Up to 250kHz Center Frequency
  • Four Identical Filters in a 0.3 Inches
  • Clock-to-Center Frequency Ratio of 20:1
  • Double-Sampling, Improved Aliasing
  • Operates from ±2.37V to ±8V Power Supplies
  • Customized Version with Internal Resistors Available
  • Low Noise
  • Low Harmonic Distortion
  • Available in 24-Pin DIP and SO Wide Packages

Product Details

The LTC1264 consists of four identical, high speed 2nd order switched-capacitor filter building blocks designed for center frequencies up to 250kHz. Each building block, together with three to five resistors, can provide 2nd order functions like lowpass, highpass, bandpass and notch. The center frequency of each 2nd order section is tuned via an external clock. The clock-to-center frequency ratio is internally set to 20:1, but it can be modified via external resistors.

The aliasing performance of the LTC1264 is improved by double-sampling each 2nd order section. Input signal frequencies can reach up to twice the clock frequency before any alias products will be detectable.

For Q ≤ 5 and for TA < 85°C, the maximum center frequency is 160kHz. For Q ≤ 2, the maximum center frequency is 250kHz. Up to 8th order filters can be realized by cascading all four 2nd order sections.

A customized monolithic version of the LTC1264 including internal thin film resistors can be obtained.

Applications

  • Digital Communications
  • Spread Spectrum Communications
  • Spectral Analysis
  • Loran Receivers
  • Instrumentation

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Product Recommendations

LTC1264 Companion Parts

Recommended Suggested Oscillator

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

PCN-PDN Information

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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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