LTC5567 - 300MHz to 4GHz Active Downconverting Mixer with Wideband IF


  • High IIP3: +26.9dBm at 1950MHz
  • 1.9dB Conversion Gain
  • Low Noise Figure: 11.8dB at 1950MHz
  • 16.5dB NF Under 5dBm Blocking
  • Low Power: 294mW
  • Wide IF Frequency Range Up to 2.5GHz
  • LO Input 50Ω Matched when Shutdown
  • –40°C to 105°C Operation (TC)
  • Very Small Solution Size
  • Pin Compatible with LT5557
  • 16-Lead (4mm × 4mm) QFN package

Typical Application

LTC5567 Typical Application
LTC5567 Typical Application


The LTC®5567 is optimized for RF downconverting mixer applications that require wide IF bandwidth. The part is also a pin-compatible upgrade to the LT5557 active mixer, offering higher linearity and 1dB compression, wider bandwidth, and lower output spurious levels. Integrated RF and LO transformers and LO buffer amplifiers allow a very compact solution.

The RF input is 50Ω matched from 1.4GHz to 3GHz, and easily matched for higher or lower RF frequencies with simple external matching. The LO input is 50Ω matched from 1GHz to 4GHz, even when the IC is disabled. The LO input is easily matched for higher or lower frequencies, as low as 300MHz, with simple external matching. The low capacitance differential IF output is usable up to 2.5GHz.


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
LTC5567IUF#PBF 4x4 QFN-16 UF I 05-08-1692 Yes
LTC5567IUF#TRPBF 4x4 QFN-16 UF I 05-08-1692 Yes

LTC5567 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
LTC5567IUF#PBF 4x4 QFN-16 I $9.29 $6.50 Yes
LTC5567IUF#TRPBF 4x4 QFN-16 I $6.56 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
DC1861A LTC5567 | 300MHz to 4GHz High Linearity Active Downconverting Mixer with Wideband IF Demo Board $125.00
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Click here to view our complete list of demo boards


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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:

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