LTC1565-31IS8#PBF

Overview

The LTC1565-31IS8#PBF is a 7th-order continuous-time linear phase lowpass filter in an 8-lead plastic SO package. It operates on a single 5V or ±5V supply with a cutoff frequency of 650kHz and 5% accuracy. Key electrical parameters include a typical power supply current of 24mA at 5V, shutdown current under 10μA, and wideband noise of 118μV RMS. The device offers a spurious-free dynamic range of 75dB and a maximum signal-to-noise ratio of 78dB. It features differential inputs and outputs, low offset voltage, and requires no external components or clock signals.

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 external clock signals or discrete components

Applications

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

Procurement Notes

Verify the IS8 suffix confirms the -40°C to 85°C industrial temperature range. Confirm the #PBF designation indicates lead-free finish compliance. Ensure the order matches the specific 8-lead SO package requirements for your PCB layout.

Selection Notes

Select this component when a fixed 650kHz cutoff with linear phase is required. Use the CS8 variant for commercial temperature ranges. Verify that the 5V supply capability meets system constraints. Consider the differential architecture for noise rejection needs.

Part Context

This part belongs to the LTC1565 family of continuous-time active filters. It serves as a replacement for LC filters where size and phase linearity are critical. Related parts include the LTC1565-31CS8 for commercial temperatures and other orders in the 1565 series for different cutoff frequencies.

Replacement Considerations

The LTC1565-31CS8#PBF is the commercial temperature version of this component. Other members of the LTC1565 series offer different cutoff frequencies but share similar architectural characteristics.