LTC1064-7CN

Overview

The LTC1064-7CN is a monolithic 8th-order lowpass filter featuring linear passband phase and flat group delay. It provides steeper roll-off than equivalent Bessel filters, achieving 34dB attenuation at twice the cutoff frequency. The cutoff frequency is tuned via an external TTL or CMOS clock with ratios of 50:1 or 100:1. Operating on a single 5V supply, it delivers 76dB S/N + THD, while ±7.5V supplies yield 92dB. The device includes internal gain stages requiring no external components and exhibits 5% overshoot with no ringing in transient response.

Feature Summary

• Monolithic 8th-order architecture providing linear phase and flat group delay characteristics
• Clock-tunable cutoff frequency selectable via external digital signal
• Steeper stopband attenuation compared to standard Bessel topologies
• Integrated design eliminating the need for external passive components

Applications

• Data communication filtering systems
• Time delay network implementations
• Phase-matched filter arrays

Procurement Notes

Verify the specific suffix CN indicates the plastic DIP package variant. Confirm the operating temperature range matches the application requirements, as commercial grades differ from military specifications. Ensure the ordering part number aligns with the required lead configuration and thermal performance metrics defined in the manufacturer's documentation.

Selection Notes

Select this component when linear phase response and precise group delay are critical. Evaluate the clock-to-cutoff ratio requirements, as the 50:1 mode enables double-sampling to reduce aliasing risks. Consider power supply constraints, noting that dynamic range improves significantly with higher voltage rails compared to single-supply operation.

Part Context

This component belongs to the LTC1064 series of clock-tunable active filters. It shares pin compatibility with the LTC1064-X, LTC1164-7, and LTC1264-7 families. The CN suffix specifically denotes the 14-lead plastic dual in-line package (PDIP) variant within the broader product line.

Replacement Considerations

Publicly confirmed substitutes include the LTC1064-X series, LTC1164-7, and LTC1264-7 due to direct pin compatibility.