LTC1560-1 - 1MHz/500kHz Continuous Time Low Noise, Lowpass Elliptic Filter


  • 5th Order, 1MHz Elliptic Filter in SO-8 Package
  • Pin Selectable 1MHz/500kHz Cutoff Frequency
  • Signal-to-Noise Ratio (SNR): 75dB
  • Signal-to-Noise Ratio with –63dB THD: 69dB
  • Passband Ripple (fCUTOFF = 1MHz): ±0.3dB
  • Stopband Attenuation Better Than 60dB
  • No External Components Required

Typical Application

LTC1560-1 Typical Application
LTC1560-1 Typical Application


The LTC®1560-1 is a 5th order, continuous-time, lowpass filter. The elliptic transfer function of the LTC1560-1 was carefully chosen to reach a compromise between selectivity, for antialiasing applications, and transient response. The filter cutoff frequency, fCUTOFF, is pin selectable to either 500kHz (Pin 5 to V+) or 1MHz (Pin 5 to V). When programmed for 1MHz, the passband ripple is typically ±0.2dB up to 0.55fCUTOFF and ±0.3dB to 0.9fCUTOFF. The transition band gain is –24dB at 1.4fCUTOFF and –51dB at 2fCUTOFF. Stopband attenuation is 63dB at 2.43fCUTOFF and above, remaining at least 60dB to 10MHz with proper board layout. When the LTC1560-1 is programmed for fCUTOFF = 500kHz, the filter response closely follows the 1MHz case with the exception of passband flatness near the cutoff frequency; the gain at fCUTOFF is –1.3dB.

The LTC1560-1, unlike other high frequency filters, is designed for low noise and low distortion. With a 1VRMS input signal, the signal-to-noise ratio is 69dB and the THD is –63dB. The maximum SNR of 75dB is obtained with a 2.1VRMS input signal. This results in –46dB THD.

The LTC1560-1 operates with ±5V supplies, has a power saving mode and is available in an SO-8 surface mount package.

Other cutoff frequencies from 450kHz to 1.5MHz can be obtained. Demo board DC135A is available for the LTC1560-1. For more information 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
LTC1560-1CS8#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LTC1560-1CS8#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LTC1560-1IS8#PBF SO-8 S8 I 05-08-1610 (S8) Yes
LTC1560-1IS8#TRPBF SO-8 S8 I 05-08-1610 (S8) Yes

LTC1560-1 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
LTC1560-1CS8#PBF SO-8 C $5.45 $4.65 Yes
LTC1560-1CS8#TRPBF SO-8 C $4.71 Yes
LTC1560-1IS8#PBF SO-8 I $6.20 $5.25 Yes
LTC1560-1IS8#TRPBF SO-8 I $5.31 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
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