LTC1564IG#TRPBF

Overview

The LTC1564IG#TRPBF is a digitally controlled continuous-time lowpass filter and 4-bit programmable gain amplifier (PGA) in a 16-lead SSOP package. It provides an adjustable cutoff frequency from 10kHz to 150kHz in 10kHz steps, achieving approximately 100dB attenuation at 2.5 times the cutoff frequency. The integrated PGA offers gains from 1V/V to 16V/V. Operating on a total supply voltage of 2.7V to 10V, it delivers a typical dynamic range of 122dB with rail-to-rail input and output swing capabilities.

Feature Summary

• Digitally programmable 8th-order elliptic lowpass filter response
• Integrated 4-bit programmable gain amplifier for signal normalization
• Rail-to-rail analog input and output voltage swing
• Low noise mute mode and low power shutdown capability

Applications

• Antialiasing and reconstruction filtering for data acquisition systems
• DSP front ends requiring high resolution and variable gain
• Scientific instruments processing signals buried in noise
• Communications systems with programmable data rates

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates lead-free tape and reel packaging. Confirm that the IG suffix corresponds to the industrial temperature range of -40°C to 85°C. Ensure compatibility with the required digital control logic levels and supply voltage constraints before procurement.

Selection Notes

Select this component when a fixed filter shape with variable cutoff and gain is required without external passive components. Verify that the 10kHz to 150kHz frequency range covers the application bandwidth. Consider the input impedance variations at higher gain settings and ensure the driving source can handle the resulting load.

Part Context

This part belongs to the LTC1564 family of self-contained active filters. It integrates both filtering and amplification functions into a single monolithic device, eliminating the need for discrete RC networks or separate amplifier stages. The design targets applications needing precise analog front-end conditioning with digital programmability.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.