LTC1563

PRODUCTION

Active RC, 4th Order Lowpass Filter Family

Data Sheet Product Selection Table
Viewing:

Overview

  • Extremely Easy to Use—A Single Resistor Value Sets the Cutoff Frequency (256Hz < fC < 256kHz)
  • Extremely Flexible—Different Resistor Values Allow Arbitrary Transfer Functions with or without Gain (256Hz < fC < 256kHz)
  • Supports Cutoff Frequencies Up to 360kHz Using FilterCAD™
  • LTC1563-2: Unity-Gain Butterworth Response Uses a Single Resistor Value, Different Resistor Values Allow Other Responses with or without Gain
  • LTC1563-3: Unity-Gain Bessel Response Uses a Single Resistor Value, Different Resistor Values Allow Other Responses with or without Gain
  • Rail-to-Rail Input and Output Voltages
  • Operates from a Single 3V (2.7V Min) to ±5V Supply
  • Low Noise: 36µVRMS for fC = 25.6kHz, 60µVRMS for fC = 256kHz
  • fC Accuracy < ±2% (Typ)
  • DC Offset < 1mV
  • Cascadable to Form 8th Order Lowpass Filters
  • Available in Narrow SSOP-16 Package

The LTC1563-2/LTC1563-3 are a family of extremely easy-to-use, active RC lowpass filters with rail-to-rail inputs and outputs and low DC offset suitable for systems with a resolution of up to 16 bits. The LTC1563-2, with a single resistor value, gives a unity-gain Butterworth response. The LTC1563-3, with a single resistor value, gives a unity-gain Bessel response. The proprietary architecture of these parts allows for a simple resistor calculation:

R = 10k (256kHz/fC); fC = Cutoff Frequency

where fC is the desired cutoff frequency. For many applications, this formula is all that is needed to design a filter. By simply utilizing different valued resistors, gain and other responses are achieved.

The LTC1563-X features a low power mode, for the lower frequency applications, where the supply current is reduced by an order of magnitude and a near zero power shutdown mode.

The LTC1563-Xs are available in the narrow SSOP-16 package (Same footprint as an SO-8 package).

Applications

  • Discrete RC Active Filters and Modules
  • Antialiasing Filters
  • Smoothing or Reconstruction Filters
  • Linear Phase Filtering for Data Communication
  • Phase Locked Loops
LTC1563
Active RC, 4th Order Lowpass Filter Family
Single 3.3V, 256Hz to 256kHz Butterworth Lowpass Filter Frequency Response Product Package 1
Add to myAnalog

Add product to the Products section of myAnalog (to receive notifications), to an existing project or to a new project.

Create New Project
Ask a Question

Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Design Note 2

Technical Articles 2

Data Sheet

This is the most up-to-date revision of the Data Sheet.

Learn More
Add to myAnalog

Add media to the Resources section of myAnalog, to an existing project or to a new project.

Create New Project

Software Resources

Can't find the software or driver you need?

Request a Driver/Software

Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

  • LTC1563-2
  • LTC1563-3
LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

Evaluation Kits

eval board
schematic 1
schematic 2
schematic 3
schematic 4
schematic 5
DC338B-A

LTC1563-2CGN Demo Board | Universal Lowpass Filter

Buy Now View Details

Product Details

Demonstration circuit DC338B-A is for the evaluation of filter circuits using an LTC1563-2 and DC338B-B for an LTC1563-3. LTC1563-2 and LTC1563-3 are dual 2nd order active RC filter building blocks with precision ±1.5% capacitors. The LTC1563-2 uses six equal value resistors to implement a 4th order Butterworth lowpass filter, and the LTC1563-3 uses six equal value resistors to implement a 4th order Bessel lowpass filter. The lowpass cutoff frequency (f C ) range of an LTC1563-X filter is 256Hz to 256kHz.

eval board
schematic 6
schematic 7
schematic 8
schematic 9
schematic 10
DC338B-B

LTC1563-3CGN Demo Board | Universal Lowpass Filter

Buy Now View Details

Product Details

Demonstration circuit DC338B-A is for the evaluation of filter circuits using an LTC1563-2 and DC338B-B for an LTC1563-3. LTC1563-2 and LTC1563-3 are dual 2nd order active RC filter building blocks with precision ±1.5% capacitors. The LTC1563-2 uses six equal value resistors to implement a 4th order Butterworth lowpass filter, and the LTC1563-3 uses six equal value resistors to implement a 4th order Bessel lowpass filter. The lowpass cutoff frequency (f C ) range of an LTC1563-X filter is 256Hz to 256kHz.
DC338B-A
LTC1563-2CGN Demo Board | Universal Lowpass Filter
DC338B-A Demo Board DC338B-A Demo Board DC338B-A Demo Board DC338B-A Demo Board DC338B - Schematic
DC338B-B
LTC1563-3CGN Demo Board | Universal Lowpass Filter
DC338B-B Demo Board DC338B-B Demo Board DC338B-B Demo Board DC338B-B Demo Board DC338B - Schematic

Latest Discussions

1 Years Ago
LTC1563-3 Bandpass config: Datasheet disagrees with LTSpice
2 Years Ago
LTC1563-2 simulation results in LTspice
2 Years Ago
PSRR of LTC1563
View related discussion on EngineerZone®

Recently Viewed