LTC1564IG#PBF

Overview

The LTC1564IG#PBF is an 8th-order continuous-time lowpass filter with a digitally controlled cutoff frequency ranging from 10kHz to 150kHz in 10kHz steps. It integrates a 4-bit programmable gain amplifier offering gains from 1V/V to 16V/V. The device operates on total supplies between 2.7V and 10V, providing rail-to-rail input and output swing. It achieves approximately 100dB attenuation at 2.5 times the cutoff frequency and delivers a dynamic range of 118dB to 122dB depending on settings. The component is housed in a 16-lead plastic SSOP package.

Feature Summary

• Digitally programmable cutoff frequency and gain via internal latching interface
• Rail-to-rail analog input and output signal handling
• Integrated mute mode for zero-gain operation with reduced noise
• Low power shutdown capability with high impedance output state

Applications

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

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance when sourcing this component. Confirm that the IG designation corresponds to the industrial temperature range of -40°C to 85°C. Ensure the 16-pin SSOP package dimensions match the target PCB footprint requirements before finalizing procurement orders.

Selection Notes

Select this component when a single-chip solution combining filtering and amplification is required to minimize external parts count. Consider the fixed elliptic response shape and ensure it meets the specific stopband rejection needs. Verify that the digital control interface compatibility matches the system's microcontroller or logic levels.

Part Context

This part belongs to the LTC1564 series of low-noise programmable filters manufactured by Analog Devices Inc. It serves as a specialized active filter designed to simplify the design of high-resolution data acquisition chains by integrating variable gain and anti-aliasing functions into one surface-mount package.

Replacement Considerations

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