LTC1059CN#PBF

Overview

The LTC1059CN#PBF is a high-performance switched capacitor universal filter manufactured by Analog Devices Inc. It integrates a general-purpose active filter building block and an uncommitted operational amplifier within a single package. The device supports various second-order filter functions, including lowpass, bandpass, notch, highpass, and allpass configurations, utilizing only two to five external resistors and an external clock signal. The center frequency is tunable from 0.1Hz to 40kHz with a guaranteed clock-to-center frequency accuracy of 0.8%. It operates on dual supplies ranging from ±2.37V to ±8V or a single supply from 4.74V to 16V. The component is housed in a 14-lead PDIP (N) package.

Feature Summary

• Provides multiple second-order filter functions including lowpass, bandpass, notch, highpass, and allpass outputs using minimal external components.
• Features a wide center frequency range tunable from 0.1Hz to 40kHz dependent on an external clock signal.
• Includes an uncommitted operational amplifier for gain adjustment, cascading techniques, or additional filter synthesis.
• Operates with low power consumption and guarantees accurate center frequency and Q factor over the specified temperature range.

Applications

• Sinewave oscillators
• Sweepable bandpass and notch filters
• Full audio frequency filters
• Tracking filters

Procurement Notes

Verify that the specific ordering suffix matches the required package type and operating temperature range. Confirm that the procurement channel provides valid traceability documentation. Ensure the component meets RoHS compliance standards as defined by the manufacturer specifications. Cross-reference the part number against official distributor catalogs to confirm current availability status.

Selection Notes

Select this component when designing circuits requiring versatile switched capacitor filtering without complex external resistor networks. Consider the maximum clock frequency limits relative to the desired center frequency and quality factor settings. Evaluate the supply voltage requirements to ensure compatibility with the system's power rails. Verify that the input frequency range does not exceed the specified operational limits for the selected mode.

Part Context

This component belongs to the LTC1059 series of high-performance switched capacitor universal filters produced by Analog Devices Inc. It is functionally compatible with other devices in the family, such as the LTC1060 and LTC1061, allowing for higher-order filter realization through cascading. The device utilizes Linear Technology’s enhanced LTCMOS silicon gate process for manufacturing.

Replacement Considerations

The J Package (CERDIP) is listed as obsolete; consider the N Package (PDIP) or S Package (SOIC) for alternate sourcing. Consult Analog Devices marketing for parts specified with wider operating temperature ranges if environmental conditions exceed standard industrial limits.