LTC1564 - 10kHz to 150kHz Digitally Controlled Antialiasing Filter and 4-Bit P.G.A

Features

  • 4-Bit Digitally Controlled 8th-Order Lowpass Filter
    –fCUTOFF Adjustable from 10kHz to 150kHz in 10kHz Steps
  • 4-Bit Digitally Controlled Programmable Gain Amplifier
    – G = 1 to 16 in 1V/V Steps
  • Miniature 16-Pin SSOP Package
  • No External Components
  • 122dB Total System Dynamic Range
  • Rail-to-Rail Input and Output Range
  • 2.7V to 10V Operation
  • Low Noise Mute Mode
  • Low Power Shutdown Mode
  • Available in 16-Lead Plastic SSOP Package

Typical Application

LTC1564 Typical Application
LTC1564 Typical Application

Description

The LTC1564 is a new type of continuous time filter for antialiasing, reconstruction and other band-limiting applications. No other analog components or filter expertise are needed to use it. There is one analog input pin and one analog output pin. The cutoff frequency (fC) and gain are programmable while the shape of the lowpass response is fixed. A latching digital interface stores fC and gain settings or it can be bypassed for control directly from the pins. The LTC1564 operates from 2.7V to 10V total (single or split supplies) and comes in a 16-pin surface mount SSOP.

The LTC1564 is a rail-to-rail high resolution 8th-order lowpass filter with two stopband notches, giving approximately 100dB attenuation at 2.5 times the passband cutoff frequency fC (a de-facto standard for DSP front ends). Signals with low or variable levels can be normalized with the built-in variable gain that reduces input-referred noise with increasing gain for a typical dynamic range (maximum signal level to minimum noise) of 122dB (20 equivalent bits) with 20kHz fC and 118dB at 100kHz fC on a ±5V supply.

Other frequency-response shapes can be provided upon request. Please contact LTC Marketing.

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
Drawing
RoHS
LTC1564CG#PBF SSOP-16 G C 05-08-1640 (G16) Yes
LTC1564CG#TRPBF SSOP-16 G C 05-08-1640 (G16) Yes
LTC1564IG#PBF SSOP-16 G I 05-08-1640 (G16) Yes
LTC1564IG#TRPBF SSOP-16 G I 05-08-1640 (G16) Yes


LTC1564 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LTC1564CG#PBF SSOP-16 C $10.13 $8.95 Yes
LTC1564CG#TRPBF SSOP-16 C $9.01 Yes
LTC1564IG#PBF SSOP-16 I $11.67 $10.30 Yes
LTC1564IG#TRPBF SSOP-16 I $10.36 Yes
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC393A LTC1564CG | Digitally Programmable Amplifier and Filter $150.00
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Click here to view our complete list of demo boards

Applications

  • Antialias or Reconstruction Filtering
  • DSP Systems
  • Communications Systems
  • Scientific Instruments
  • High Resolutions (16 Bits to 20 Bits)
  • Processing Signals Buried in Noise
  • Audio Signal Processing
  • Programmable Data Rates
  • Automatic Gain Control (AGC)
  • Single Part Replacing Multiple Filters

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Design Tools

Linear Technology provides a variety of custom design simulation tools and device models to allow even novice designers to quickly and easily evaluate circuits using high performance switching regulators, amplifiers, data converters, filters and more. Please visit our Design Tools page to view and download:

  • LTspice - A powerful SPICE simulator, schematic capture and waveform viewer with enhancements and models for easing the simulation of switching regulators
  • LTpowerCAD - A complete power supply selection, synthesis and design tool
  • LTpowerPlay - A development environment supporting Linear Technology's Digital Power System Management (PSM) products
  • PScope & QuikEval - USB-based product demonstration and data acquisition system for use with our ADCs, DACs, and more
  • Linduino - Arduino compatible system for developing and distributing firmware libraries and example code
  • LinearLab Tools - A collection of Matlab and Python programs that provide direct access to Linear Technology’s data converter evaluation boards
  • And More!

Technical Support