LTC1565-31CS8#TRPBF

Overview

The LTC1565-31 is a 7th-order, continuous-time, linear phase lowpass filter with a cutoff frequency of 650kHz. It operates on a single 5V or ±5V supply and features differential inputs and outputs. The device provides 75dB spurious-free dynamic range and 78dB signal-to-noise ratio. It includes a shutdown mode with typical current consumption below 10μA. The component requires no external components or clock signals and is housed in an 8-lead plastic SO package.

Feature Summary

• Provides 7th-order filtering with linear phase response in the passband
• Features fully differential inputs and outputs for wireless system interfacing
• Includes a shutdown mode to minimize power consumption
• Operates without requiring external components or clock signals

Applications

• CDMA Basestations
• Data Communications
• Antialiasing Filters
• Smoothing or Reconstruction Filters
• Matched Filter Pairs

Procurement Notes

Verify the specific ordering suffix to confirm the temperature range and packaging format. The #TRPBF suffix indicates tape and reel packaging with lead-free finish. Ensure the CS variant matches the required operating temperature range of 0°C to 70°C for the intended application environment.

Selection Notes

Select this component for applications requiring high selectivity and linear phase characteristics without external tuning components. Consider the differential I/O interface for systems needing matched filter pairs. Verify that the 650kHz cutoff frequency aligns with the system bandwidth requirements and that the supply voltage supports the desired dynamic range performance.

Part Context

This part belongs to the LTC1565 family of continuous-time active filters. It is designed as a replacement for LC filters in data communications and cellular basestation applications. The device integrates the filter network, input buffers, and output drivers into a single compact package, simplifying circuit design compared to discrete solutions.

Replacement Considerations

Consult manufacturer documentation for alternative parts within the LTC156x series or other continuous-time filter families if different cutoff frequencies or order specifications are required.