LTC1566-1 - Low Noise 2.3MHz Continuous Time Lowpass Filter


  • 7th Order, 2.3MHz Lowpass Filter in an SO-8
  • 62µVRMS Input Referred Noise
  • Operates on a Single 5V or a ±5V Supply
  • Differential Inputs and Outputs
  • Low Offset (3mV typical, 10mVMAX)
  • Adjustable Output Common Mode Voltage
  • 40dB Attenuation at 1.5 x fCUTOFF
  • Requires No External Components

Typical Application

LTC1566-1 Typical Application
LTC1566-1 Typical Application


The LTC®1566-1 is a 7th order continuous time lowpass filter with 12dB of passband gain. The selectivity, linearity and dynamic range makes the LTC1566-1 suitable for filtering in data communications or data acquisition systems. The filter attenuation is 40dB at 1.5 × fCUTOFF and at least 60dB for frequencies above 10MHz.

The LTC1566-1 has an input referred noise of 62µVRMS in a 2MHz bandwidth. In receiver applications where the signal levels are small, the filter features 71dB of spurious free dynamic range.

With 5% accuracy of the cutoff frequency, the LTC1566-1 can be used in applications requiring pairs of matched filters, such as transceiver I and Q channels.

The differential inputs and outputs provide a simple interface for wireless systems. The high impedance inputs are easily coupled to differential demodulators or D/A converters. The output DC common mode voltage and output DC offset voltage are adjustable so the signal path can be optimized for driving an A/D converter or differential modulator.

Other cutoff frequencies and single-ended I/O can be provided upon request. Please contact LTC Marketing.


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
LTC1566-1CS8#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LTC1566-1CS8#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LTC1566-1IS8#PBF SO-8 S8 I 05-08-1610 (S8) Yes
LTC1566-1IS8#TRPBF SO-8 S8 I 05-08-1610 (S8) Yes

LTC1566-1 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
LTC1566-1CS8#PBF SO-8 C $7.05 $5.95 Yes
LTC1566-1CS8#TRPBF SO-8 C $6.01 Yes
LTC1566-1IS8#PBF SO-8 I $7.30 $6.15 Yes
LTC1566-1IS8#TRPBF SO-8 I $6.21 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


  • WCDMA Basestations
  • Communication Filters
  • Antialiasing Filters
  • Smoothing or Reconstruction Filters
  • Matched Filter Pairs
  • Replacement for LC Filters

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