LTC1264-7CSW#TRPBF

Overview

The LTC1264-7CSW#TRPBF is a clock-tunable monolithic 8th order lowpass filter with linear passband phase and flat group delay. It features a maximally flat amplitude response with steeper roll-off than equivalent Bessel filters, achieving 28dB attenuation at twice the cutoff frequency. The cutoff frequency is tuned via an external TTL or CMOS clock, supporting ratios of 25:1 or 50:1 to obtain frequencies between 200kHz and 250kHz. Operating on dual supplies from ±2.375V to ±8V or a single 5V supply, it provides 65dB THD throughout a 100kHz passband. The device is housed in a 16-lead plastic SO Wide package.

Feature Summary

• Linear phase and flat group delay characteristics for minimal signal distortion
• Steeper roll-off performance compared to standard 8th order Bessel filters
• Clock-tunable operation allowing flexible cutoff frequency adjustment
• Single-chip implementation requiring no external components

Applications

• Data communication filters
• Time delay networks
• Phase matched filters

Procurement Notes

Verify that the ordering suffix #TRPBF confirms tape and reel packaging and lead-free compliance. Confirm the CSW suffix corresponds to the 16-lead SO Wide package variant. Ensure the C grade matches the required -40°C to 85°C operating temperature range. Cross-reference the manufacturer part number with official Analog Devices documentation to validate authenticity.

Selection Notes

Select this component when linear phase response and steep attenuation are critical requirements. Verify that the application can accommodate the necessary external clock source. Compare the 25:1 and 50:1 clock-to-cutoff ratios against the specific bandwidth needs. Consider the 16-lead SO Wide package dimensions for PCB layout constraints.

Part Context

This device belongs to the LTC1264 family of active filters. It is pin-compatible with the LTC1064-X series, facilitating direct upgrades or design modifications within existing architectures. The family includes various orders and response types, but the LTC1264-7 specifically targets applications demanding precise phase linearity combined with high-speed filtering capabilities.

Replacement Considerations

Public confirmed substitute part numbers are not available.