LTC1067 - Rail-to-Rail, Very Low Noise Universal Dual Filter Building Block

Features

  • Rail-to-Rail Input and Output Operation
  • Operates from a Single 3V to ±5V Supply
  • Dual 2nd Order Filter in a 16-Lead SSOP Package
  • >80dB Dynamic Range on Single 3.3V Supply
  • Clock-to-Center Frequency Ratio of 100:1 for the LTC1067 and 50:1 for the LTC1067-50
  • Internal Sampling-to-Center Frequency Ratio of 200:1 for the LTC1067 and 100:1 for the LTC1067-50
  • Center Frequency Error < ±0.2% Typ
  • Low Noise: <40µVRMS, Q </=5
  • Customizable with Internal Resistors

Typical Application

LTC1067 Typical Application
LTC1067 Typical Application

Description

The LTC®1067/LTC1067-50 consist of two identical rail-to-rail, high accuracy and very wide dynamic range 2nd order switched-capacitor building blocks. Each building block, together with three to five resistors, provides 2nd order filter functions such as bandpass, highpass, lowpass, notch and allpass. High precision 4th order filters are easily designed. The center frequency of each 2nd order section is tuned by the external clock frequency. The internal clock-to-center frequency ratio (100:1 for the LTC1067 and 50:1 for the LTC1067-50) can be modified by the external resistors. These devices have a double sampled architecture which places aliasing and imaging components at twice the clock frequency. The LTC1067-50 is a low power device consuming about one half the current of the LTC1067. The LTC1067-50’s typical supply current is about 1mA from a 3.3V supply. The LTC1067 and LTC1067-50 are available in 16-pin narrow SSOP and SO packages. Mask programmable versions of the LTC1067 and LTC1067-50, with thin film resistors on-chip and custom clock-to-cutoff frequency ratios, can be designed in an SO-8 package to realize application specific monolithic filters. Please contact LTC Marketing for more details.

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
LTC1067-50CGN#PBF SSOP-16 GN C 05-08-1641 (GN16) Yes
LTC1067-50CGN#TRPBF SSOP-16 GN C 05-08-1641 (GN16) Yes
LTC1067-50CS#PBF SO-16 S C 05-08-1610 (S16) Yes
LTC1067-50CS#TRPBF SO-16 S C 05-08-1610 (S16) Yes
LTC1067-50IGN#PBF SSOP-16 GN I 05-08-1641 (GN16) Yes
LTC1067-50IGN#TRPBF SSOP-16 GN I 05-08-1641 (GN16) Yes
LTC1067-50IS#PBF SO-16 S I 05-08-1610 (S16) Yes
LTC1067-50IS#TRPBF SO-16 S I 05-08-1610 (S16) Yes
LTC1067CGN#PBF SSOP-16 GN C 05-08-1641 (GN16) Yes
LTC1067CGN#TRPBF SSOP-16 GN C 05-08-1641 (GN16) Yes
LTC1067CS#PBF SO-16 S C 05-08-1610 (S16) Yes
LTC1067CS#TRPBF SO-16 S C 05-08-1610 (S16) Yes
LTC1067IGN#PBF SSOP-16 GN I 05-08-1641 (GN16) Yes
LTC1067IGN#TRPBF SSOP-16 GN I 05-08-1641 (GN16) Yes
LTC1067IS#PBF SO-16 S I 05-08-1610 (S16) Yes
LTC1067IS#TRPBF SO-16 S I 05-08-1610 (S16) Yes


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
LTC1067-50CGN#PBF SSOP-16 C $4.20 $3.75 Yes
LTC1067-50CGN#TRPBF SSOP-16 C $3.81 Yes
LTC1067-50CS#PBF SO-16 C $4.25 $3.50 Yes
LTC1067-50CS#TRPBF SO-16 C $3.56 Yes
LTC1067-50IGN#PBF SSOP-16 I $4.70 $4.25 Yes
LTC1067-50IGN#TRPBF SSOP-16 I $4.31 Yes
LTC1067-50IS#PBF SO-16 I $4.75 $3.95 Yes
LTC1067-50IS#TRPBF SO-16 I $4.01 Yes
LTC1067CGN#PBF SSOP-16 C $4.20 $3.75 Yes
LTC1067CGN#TRPBF SSOP-16 C $3.81 Yes
LTC1067CS#PBF SO-16 C $4.25 $3.50 Yes
LTC1067CS#TRPBF SO-16 C $3.56 Yes
LTC1067IGN#PBF SSOP-16 I $4.70 $4.25 Yes
LTC1067IGN#TRPBF SSOP-16 I $4.31 Yes
LTC1067IS#PBF SO-16 I $4.75 $3.95 Yes
LTC1067IS#TRPBF SO-16 I $4.01 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

Applications

  • Notch Filters
  • Narrowband Bandpass Filters
  • Tone Detection
  • Noise Reduction Systems

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Design Tools

LTspice

LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice

Models for the following parts are available in LTspice:
LTC1067
LTC1067-50

Technical Support