LTC1059 - High Performance Switched Capacitor Universal Filter


  • All Filter Parameters Guaranteed over Temperature
  • Wide Center Frequency Range (0.1Hz to 40kHz)
  • Low Noise Wide Dynamic Range
  • Guaranteed Operation for ±2.37V and ±5V Supply
  • Low Power Consumption
  • Guaranteed Clock-to-Center Frequency Accuracy of 0.8% (LTC1059A)
  • Guaranteed Low Offset Voltages over Temperature
  • Very Low Center Frequency and Q Tempco
  • Clock Input T²L or CMOS Compatible
  • Separate Highpass (or Notch or Allpass), Bandpass, Lowpass Outputs

Typical Application

LTC1059 Typical Application
LTC1059 Typical Application


The LTC®1059 consists of a general purpose, high performance, active filter building block and an uncommitted op amp. The filter building block together with an external clock and 2 to 5 resistors can produce various 2nd order functions which are available at its three output pins. Two out of three always provide lowpass and bandpass functions while the third output pin can produce notch or highpass or allpass. The center frequency of these functions can be tuned from 0.1Hz to 40kHz and is dependent on an external clock or an external clock and a resistor ratio. The filter can handle input frequencies up to 100kHz. The uncommitted op amp can be used to obtain additional allpass and notch functions, for gain adjustment or for cascading techniques.

Higher than 2nd order filter functions can be obtained by cascading the LTC1059 with the LTC1060 dual universal filter or the LTC1061 triple universal filter. Any classical filter realization (such as Butterworth, Cauer, Bessel and Chebyshev) can be formed.

The LTC1059 can be operated with single or dual supplies ranging from ±2.37V to ±8V (or 4.74V to 16V single supply).

The LTC1059 is manufactured by using Linear Technology?s enhanced LTCMOS? silicon gate process.


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
LTC1059CN#PBF N-14 N C 05-08-1510 (N14) Yes
LTC1059CS#PBF SO-14 S C 05-08-1610 (S14) Yes
LTC1059CS#TRPBF SO-14 S C 05-08-1610 (S14) Yes

LTC1059 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
LTC1059CN#PBF N-14 C $3.75 $3.10 Yes
LTC1059CS#PBF SO-14 C $4.20 $3.30 Yes
LTC1059CS#TRPBF SO-14 C $3.36 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.

Click here to view our complete list of demo boards


  • Sinewave Oscillators
  • Sweepable Bandpass/Notch Filters
  • Full Audio Frequency Filters
  • Tracking 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!

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