LTC1064-2CSW#TRPBF

Overview

The LTC1064-2CSW#TRPBF is a monolithic 8th-order lowpass Butterworth filter in a 16-pin SW package. It provides a maximally flat passband with a -48dB/octave attenuation slope and over 80dB maximum attenuation. The cutoff frequency is programmed by an external TTL or CMOS clock, supporting ratios of 50:1 (Pin 10 at V+) or 100:1 (Pin 10 at V-), with a maximum cutoff of 140kHz. It operates from ±2.37V to ±8V supplies, features 80µVRMS wideband noise, and requires no external components.

Feature Summary

• Monolithic 8th-order Butterworth lowpass filter providing maximally flat passband response
• Clock-programmable cutoff frequency with selectable 50:1 or 100:1 clock-to-cutoff ratios
• Integrated design requiring no external passive components for operation
• Low harmonic distortion and wideband noise performance suitable for precision signal conditioning

Applications

• Antialiasing filters for data acquisition systems
• Smoothing filters for sensor signal processing
• Tracking high-frequency lowpass filtering applications

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates tape and reel packaging when sourcing this component. Confirm the manufacturer is Analog Devices Inc. or its authorized licensee Linear Technology Corporation. Ensure the part number matches the 16-lead SW package configuration. Check for RoHS compliance status if required by your manufacturing standards. Validate the operating temperature range corresponds to the 'C' grade specification.

Selection Notes

Select the LTC1064-2 when an 8th-order Butterworth response is required without external capacitors. Choose the 50:1 ratio mode for higher cutoff frequencies relative to the clock speed, or the 100:1 mode for lower cutoffs. Ensure the available clock signal meets the logic threshold requirements for the chosen supply voltage. Verify that the input signal amplitude remains within the linear operating range to maintain specified distortion levels.

Part Context

This component belongs to the LTC1064 family of clock-sweepable lowpass filters. It is pin-compatible with the LTC1064-1, which offers a different filter response characteristic. The device utilizes enhanced analog CMOS Si-gate process technology. It serves as a compact alternative to discrete multi-op-amp RC active filter realizations.

Replacement Considerations

The LTC1064-1 is a pin-compatible alternative offering a different filter response. For wider temperature ranges, consult marketing for military-grade variants. The N14 package is suggested as an alternate source option for legacy requirements.