LTC1164CSW#PBF

Overview

The LTC1164CSW#PBF is a low power, low noise quad universal filter building block manufactured by Analog Devices Inc. It integrates four independent second-order switched capacitor filter sections within a single 24-lead plastic SO package (SW). Each section typically consumes 850µA of supply current and operates from dual power supplies ranging from ±2.37V to ±8V. The device supports clock-to-center frequency ratios of 50:1 and 100:1, enabling center frequency tuning from 0.1Hz to 20kHz for Q values below 5. Key electrical characteristics include a maximum DC offset voltage of 5mV, a gain-bandwidth product of 2MHz, and a slew rate of 1.6V/µs.

Feature Summary

• Integrates four independent second-order switched capacitor filter building blocks in a compact package
• Supports multiple filter topologies including lowpass, highpass, bandpass, and notch configurations
• Features adjustable clock-to-center frequency ratios of 50:1 or 100:1 for precise tuning
• Operates with low power consumption while maintaining low noise performance

Applications

• Antialiasing filters
• Telecom signal processing
• Spectral analysis systems
• Loop filters

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance when sourcing this component. Confirm that the SW package designation matches the required surface mount footprint for your PCB layout. Ensure the operating temperature range aligns with your system requirements, as commercial grades are specified for -40°C to 85°C.

Selection Notes

Select this component when designing multi-stage active filters requiring precise frequency control without external capacitors. Consider the available modes of operation, such as Mode 1 for speed or Mode 3 for flexibility, based on your Q factor and clock frequency constraints. Evaluate the power supply requirements against the device's ±2.37V to ±8V operating range.

Part Context

This part belongs to the LTC1164 family of universal filter building blocks. While other variants exist in ceramic DIP or plastic PDIP packages, the CSW suffix specifically denotes the 24-lead wide plastic small outline package. This family allows designers to cascade sections to create higher-order filters like Butterworth or Elliptic responses.

Replacement Considerations

Consult manufacturer documentation for direct pin-compatible alternatives. The N24 package is noted as an alternate source option in official literature. Verify that any substitute maintains the same switched capacitor architecture and electrical specifications.