LTC1562IG#PBF

Overview

The LTC1562IG#PBF is a low noise, low distortion continuous-time active RC quad universal filter manufactured by Analog Devices Inc. It features four independent second-order filter blocks capable of center frequencies from 10kHz to 150kHz with typical accuracy of -0.3%. The device operates on a single or dual supply ranging from 4.75V to 10.5V total. Key electrical parameters include a typical signal-to-noise ratio of 97dB on a single 5V supply and -96dB total harmonic distortion at 20kHz input. It utilizes resistor-programmable fO, Q, and gain settings without requiring an external clock.

Feature Summary

• Four independent second-order filter sections for versatile cascading configurations
• Continuous-time architecture eliminating the need for external clocks
• Rail-to-rail input and output voltage capabilities
• Resistor-programmable center frequency, quality factor, and gain

Applications

• High resolution systems (14 bits to 18 bits)
• Antialiasing and reconstruction filters
• Data communications and equalizers
• Dual or I-and-Q channels using two matched fourth-order filters in one package

Procurement Notes

Verify the specific suffix 'IG' indicates industrial temperature range (-40°C to 85°C) and SSOP-20 packaging. Confirm RoHS compliance status through official manufacturer documentation prior to ordering. Ensure design accounts for substrate pins tied to V– in the selected package variant.

Selection Notes

Select this component when designing filters between 10kHz and 150kHz requiring high dynamic range without clock jitter. Consider the -0.3% center frequency accuracy if tight tolerance is required. Evaluate power supply constraints as the device supports both single and dual supply operation within the specified voltage limits.

Part Context

The LTC1562 series represents a family of very low noise, low distortion active RC quad universal filters. The IG suffix specifically denotes the industrial temperature grade and plastic SSOP package. This part replaces traditional op-amp based RC active filters and LC modules in compact designs.

Replacement Considerations

Public confirmed substitutes include LTC1562CG (Commercial grade), LTC1562ACG (A Grade Commercial), and LTC1562AIG (A Grade Industrial). Verify temperature range and accuracy specifications match application requirements when substituting.