LTC1061CSW#PBF

Overview

The LTC1061CSW#PBF is a high-performance triple universal filter building block manufactured by Analog Devices Inc. It integrates three independent switched-capacitor filter sections within a single 20-lead SO Wide package. The device supports clock-tunable center frequencies ranging from 0.1Hz to 35kHz, with an fO × Q product capability up to 1MHz. It operates on supply voltages between –2.37V and –8V (or 4.74V to 16V). Key electrical specifications include a guaranteed signal-to-noise ratio of 90dB, low offset voltages over temperature, and CMOS-compatible clock inputs.

Feature Summary

• Integrates three universal filter building blocks capable of producing various second-order functions including lowpass, bandpass, highpass, notch, and allpass responses.
• Supports cascading configurations to achieve higher-order filter functions up to 6th order using external resistors and a single clock source.
• Features clock inputs compatible with both T2L logic levels and standard CMOS signals for flexible system integration.

Applications

• Clock-tunable tracking filters
• Antialiasing filters
• High-order Chebyshev or Butterworth lowpass/bandpass implementations

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 ordering information aligns with the current manufacturer datasheet to avoid obsolete package variants.

Selection Notes

Select this component when a design requires multiple filter stages in a compact form factor without discrete op-amp complexity. Consider the maximum input frequency limits relative to the chosen clock frequency and supply voltage. Verify that the required center frequency range falls within the specified operational boundaries for the selected Q factor.

Part Context

This part belongs to the LTC1061 family of triple universal filter building blocks. It serves as a functional upgrade to the dual-filter LTC1060, providing an additional section for complex filter synthesis. The CSW variant specifically denotes the plastic SO Wide package option available for this series.

Replacement Considerations

The N20 package is listed as an alternate source option. For dual-filter requirements, the LTC1060 may be considered. Single-filter applications might utilize the LTC1059.