LTC1065IN8

Overview

The LTC1065IN8 is a monolithic, clock-tunable, linear phase 5th order Bessel lowpass filter with high DC accuracy. It operates from ±2.375V to ±8V power supplies and features an internal oscillator or external clock input. The device provides a typical output DC offset of 1mV and 80dB common mode rejection. Key electrical parameters include a maximum cutoff frequency of 50kHz, a 100:1 clock-to-cutoff ratio, 80µVRMS wideband noise, and 50µVRMS clock feedthrough. It is housed in an 8-pin PDIP package.

Feature Summary

• Clock-tunable cutoff frequency using internal RC or external clock
• Linear phase 5th order Bessel response for minimal transient distortion
• High DC accuracy with typically 1mV output offset
• Low clock feedthrough and wideband noise for precision signal conditioning

Applications

• Anti-aliasing filters
• Strain gauge amplifiers
• Digital voltmeters
• Audio signal processing

Procurement Notes

Verify the specific ordering suffix against official Analog Devices documentation to confirm package type and temperature range. Ensure the component matches the required pinout and electrical specifications for your design. Cross-reference the manufacturer part number with authorized distributors to confirm authenticity and availability status before procurement.

Selection Notes

Select this component when a precise Bessel response is required for applications sensitive to phase linearity. Consider the internal oscillator capabilities if external clock generation is undesirable. Verify that the supply voltage range and operating temperature meet system requirements. Check pin compatibility with alternative models like the LTC1063 if different filter responses are needed.

Part Context

The LTC1065 series includes variants such as the LTC1063 (Butterworth response) and LTC1064 (8th order). The IN8 designation specifically indicates the industrial temperature range (-40°C to 85°C) and the 8-pin PDIP package. This family offers clock-tunable filtering solutions for various analog signal processing needs.

Replacement Considerations

LTC1063CN8 is a pin-compatible alternative offering a Butterworth response instead of Bessel. For higher-order filtering, consider the LTC1064 series. Verify that any replacement maintains the required clock-tunability and DC accuracy specifications.