LTC1564CG#PBF

Overview

The LTC1564CG#PBF is a digitally controlled continuous-time lowpass filter and programmable gain amplifier in a 16-lead SSOP package. It provides an 8th-order elliptic response with cutoff frequencies adjustable from 10kHz to 150kHz in 10kHz steps. The device features a 4-bit programmable gain amplifier offering gains from 1V/V to 16V/V. It operates on total supply voltages between 2.7V and 10V, delivering up to 122dB of dynamic range at ±5V supplies. Key electrical parameters include approximately 100dB attenuation at 2.5 times the cutoff frequency, rail-to-rail input and output swing, and shutdown current as low as 45µA.

Feature Summary

• Digitally controlled 8th-order lowpass filter with fixed elliptic response shape
• Integrated 4-bit programmable gain amplifier for signal normalization
• Rail-to-rail input and output voltage swing capability
• Low power shutdown mode with latching digital interface

Applications

• Antialiasing or reconstruction filtering for data acquisition systems
• DSP front ends requiring high stopband rejection
• Automatic gain control (AGC) circuits
• Processing signals buried in noise

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance when sourcing this component. Confirm that the CG designation corresponds to the commercial temperature range of 0°C to 70°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 is required for band-limiting and variable gain amplification. It is suitable for applications needing precise cutoff frequency adjustments without external passive components. Consider the input impedance variations at higher gain settings when interfacing with source circuits.

Part Context

This part belongs to the LTC1564 family of low-noise programmable filters manufactured by Analog Devices Inc. It serves as a specialized analog front-end component designed to simplify system design by integrating filtering and amplification functions into a single surface-mount package.

Replacement Considerations

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