LTC1064-1CSW#PBF

Overview

The LTC1064-1CSW#PBF is an 8th-order, clock-sweepable elliptic lowpass switched capacitor filter in a 16-pin SW package. It operates from ±2.37V to ±8V supplies with a maximum corner frequency of 50kHz and a 100:1 clock-to-cutoff ratio. Electrical specifications include 150µVRMS wideband noise, 0.03% THD at 3VRMS input, and stopband attenuation exceeding 68dB at 1.5 times the cutoff frequency. The device requires no external components for frequencies up to 20kHz.

Feature Summary

• Clock-programmable elliptic filtering architecture
• Integrated internal film resistors eliminate external components
• Low harmonic distortion and wideband noise performance

Applications

• Antialiasing filters
• Telecom PCM filters

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance when sourcing. Confirm the SW package variant matches the required pinout and thermal characteristics. Ensure the ordering part number aligns with the manufacturer's current production status and availability channels.

Selection Notes

Select this component for applications requiring high-order filtering without discrete op-amp complexity. Verify that the system clock can provide the necessary 100:1 ratio. Check if compensation capacitors are needed for cutoff frequencies above 20kHz to maintain passband flatness.

Part Context

This part belongs to the LTC1064 family of switched capacitor filters. It shares pin compatibility with the LTC1064-2 series. The SW package provides a surface-mount alternative to the traditional DIP options while maintaining identical electrical functionality.

Replacement Considerations

LTC1064-2

FAQ

What is the relationship between the clock frequency and the cutoff frequency?

The clock to cutoff frequency ratio is fixed at 100:1.

Are external components required for operation?

No external components are needed for cutoff frequencies up to 20kHz. Capacitors are required for frequencies above 20kHz.

What is the maximum operating supply voltage range?

The device operates from ±2.37V to ±8V power supplies.