LTC1565-31CS8#PBF

Overview

The LTC1565-31 is a seventh-order continuous-time linear phase lowpass filter with a cutoff frequency of 650kHz. It operates on a single 5V or ±5V supply, drawing 24mA to 33mA in normal mode and less than 10μA in shutdown. The device features differential inputs and outputs, achieving a spurious-free dynamic range of 75dB and a maximum signal-to-noise ratio of 78dB. It provides 36dB attenuation at twice the cutoff frequency and over 72dB above three times the cutoff. The component requires no external components or clock signals and includes a shutdown pin for power management.

Feature Summary

• Seventh-order continuous-time linear phase response
• Differential inputs and outputs for wireless system interfacing
• Shutdown mode with ultra-low current consumption
• Requires no external components or clock signals

Applications

• CDMA basestations
• Data communications systems
• Antialiasing filters
• Smoothing or reconstruction filters
• Matched filter pairs for I and Q channels

Procurement Notes

Verify the specific suffix against official documentation to confirm temperature range and packaging type. The CS8 suffix indicates commercial operation from 0°C to 70°C in an SO-8 package. Confirm RoHS compliance status via manufacturer datasheets before procurement. Ensure ordering codes match the required lead finish and reel specifications.

Selection Notes

Select this component for applications requiring high selectivity without external tuning components. The fixed 650kHz cutoff suits narrowband cellular and data communication filtering. Verify supply voltage compatibility, as it supports both single 5V and dual ±5V configurations. Consider the shutdown feature if power conservation is critical during idle periods.

Part Context

This part belongs to the LTC1565 family of continuous-time active filters. It serves as a replacement for discrete LC filters, offering superior linearity and compactness. Related parts include the LTC1560 and LTC1562 series, which offer different orders and cutoff frequencies for varied signal processing requirements.

Replacement Considerations

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