LTC1562CG#PBF

Overview

The LTC1562CG#PBF is a very low noise, low distortion active RC quad universal filter manufactured by Analog Devices Inc. It features four independent second-order filter sections housed in a 20-lead plastic SSOP package. The device operates on a single or dual supply ranging from 4.75V to 10.5V total. It supports center frequencies between 10kHz and 150kHz with typical accuracy of -0.5%. Key electrical parameters include a typical signal-to-noise ratio of 103dB at -5V supply (Q=1) and 97dB on a single 5V supply. The outputs are rail-to-rail, and the device includes a zero-power shutdown mode.

Feature Summary

• Contains four independent second-order filter blocks that can be cascaded for higher order filtering
• Provides continuous-time filtering without requiring an external clock source
• Features rail-to-rail input and output voltage capabilities for maximum dynamic range
• Includes a zero-power shutdown mode to minimize current consumption when inactive

Applications

• High resolution systems requiring 14 bits to 18 bits precision
• Antialiasing and reconstruction filters in data acquisition chains
• Data communications and equalizer circuits
• Dual or I-and-Q channel processing using two matched fourth-order filters
• Replacing bulky LC filter modules in compact designs

Procurement Notes

Verify the specific ordering suffix to confirm the package type and temperature grade. The #PBF designation indicates lead-free compliance and tube packaging. Confirm availability status as distribution channels may list this component as discontinued or limited stock depending on the region and date of inquiry.

Selection Notes

Select the LTC1562CG#PBF for applications requiring precise analog filtering in the 10kHz to 150kHz range. Ensure the design accommodates the required supply voltage range of 4.75V to 10.5V. Consider the thermal characteristics of the SSOP package if operating near the upper temperature limits. Verify that external resistor tolerances meet the required center frequency accuracy specifications.

Part Context

This component belongs to the LTC1562 family of universal active filters. It is distinct from the LTC1562-2, which is optimized for higher center frequencies around 200kHz. The CG variant specifically denotes the commercial temperature range and SSOP package format, differentiating it from industrial grades or alternative package styles like PDIP.

Replacement Considerations

Public confirmed substitute part numbers: LTC1562ACG, LTC1562IG, LTC1562AIG.