LTC1064-1ACJ

Overview

The LTC1064-1ACJ is an 8th-order, clock-sweepable Cauer lowpass switched capacitor filter. It features a 50:1 fCLK to fCUTOFF ratio with ±0.1dB passband ripple and 80dB stopband attenuation at 2 × fCUTOFF. The device achieves cutoff frequencies up to 100kHz with wideband noise of 135µVRMS and total harmonic distortion of 0.03%. It operates on dual supplies up to ±8V and accepts TTL or CMOS clocks up to 5MHz.

Feature Summary

• Provides high-selectivity 8th-order filtering within a compact package
• Features low noise and low harmonic distortion for signal integrity
• Allows flexible frequency tuning via external clock signals

Applications

• Antialiasing filters
• Telecom filters
• Sinewave generators

Procurement Notes

Verify the specific ACJ suffix against official documentation to confirm temperature range and package type. Ensure the ordering part number matches the required lead configuration and thermal characteristics. Confirm availability through authorized distributors.

Selection Notes

Select this component when high-order filtering is required without discrete op-amp complexity. Consider the 50:1 clock-to-cutoff ratio and compensation requirements for frequencies above 20kHz. Verify power supply voltage compatibility and input signal levels against absolute maximum ratings.

Part Context

This device belongs to the LTC1064 family of switched capacitor filters. It is pin-compatible with the LTC1064-1, LTC1064-2, and LTC1064-3 variants. The family utilizes enhanced LTCMOS silicon gate process technology for performance.

Replacement Considerations

The datasheet lists the LTC1069-1, LTC1069-6, LTC1569-6, and LTC1569-7 as related parts. These offer different order responses or power profiles but may require circuit redesign due to package and functional differences.