LTC1066-1CSW#PBF

Overview

The LTC1066-1CSW#PBF is an 8th-order clock-tunable switched-capacitor lowpass filter in an 18-pin SO Wide package. It provides selectable elliptic or linear phase responses with a maximum cutoff frequency of 120kHz at ±8V supplies. The device features 14-bit DC gain linearity, a maximum DC offset of ±1.5mV, and a DC offset temperature coefficient of 7µV/°C. It operates from single 5V to ±8V power supplies, drives 1kΩ loads with 0.02% THD, and offers a signal-to-noise ratio of 90dB with 500MΩ input impedance.

Feature Summary

• Provides selectable elliptic or linear phase response via pin configuration
• Delivers high DC accuracy with 14-bit gain linearity and minimal offset drift
• Enables clock-tunable operation for flexible cutoff frequency adjustment
• Integrates high-performance op amps eliminating need for external buffers

Applications

• Instrumentation systems requiring precise signal conditioning
• Data acquisition systems utilizing anti-aliasing filtering
• Audio signal processing applications demanding low distortion
• Smoothing filters for precision measurement circuits

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance when sourcing this component. Confirm the CSW designation matches the required wide plastic SO package dimensions. Ensure the ordering information aligns with the manufacturer's current documentation to avoid discrepancies in pinout or electrical specifications during procurement.

Selection Notes

Select this component when an 8th-order filter response is necessary without external active components. Consider the clock-to-cutoff frequency ratios of 50:1 for elliptic or 100:1 for linear phase modes. Evaluate the power supply requirements against the available voltage rails, as performance varies between single 5V and dual ±8V configurations.

Part Context

This part belongs to the LTC1066 family of switched-capacitor filters manufactured by Analog Devices. It is designed for applications requiring high DC accuracy and tunable bandwidth. The device integrates the filter network and output buffering into a single monolithic solution, simplifying circuit design compared to discrete multi-stage implementations.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.