LTC5591 - Dual 1.3GHz to 2.3GHz High Dynamic Range Downconverting Mixer


  • Conversion Gain: 8.5dB at 1950MHz
  • IIP3: 26.2dBm at 1950MHz
  • Noise Figure: 9.9dB at 1950MHz
  • 15.5dB NF Under 5dBm Blocking
  • High Input P1dB
  • 47dB Channel-to-Channel Isolation
  • 1.25W Power Consumption at 3.3V
  • Low Power Mode: <800mW Consumption
  • Independent Channel Shutdown Control
  • 50Ω Single-Ended RF and LO Inputs
  • LO Input Matched In All Modes
  • 0dBm LO Drive Level
  • Small Package and Solution Size
  • –40°C to 105°C Operation

Typical Application

LTC5591 Typical Application
LTC5591 Typical Application


The LTC®5591 is part of a family of dual-channel high dynamic range, high gain downconverting mixers covering the 600MHz to 4.5GHz RF frequency range. The LTC5591 is optimized for 1.3GHz to 2.3GHz RF applications. The LO frequency must fall within the 1.4GHz to 2.1GHz range for optimum performance. A typical application is a LTE or W-CDMA multichannel or diversity receiver with a 1.7GHz to 2.2GHz RF input and low side LO.

The LTC5591’s high conversion gain and high dynamic range enable the use of lossy IF filters in high selectivity receiver designs, while minimizing the total solution cost, board space and system-level variation. A low current mode is provided for additional power savings and each of the mixer channels has independent shutdown control.


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
LTC5591IUH#PBF 5x5 QFN-24 UH I 05-08-1747 Yes
LTC5591IUH#TRPBF 5x5 QFN-24 UH I 05-08-1747 Yes

LTC5591 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
LTC5591IUH#PBF 5x5 QFN-24 I $13.57 $9.50 Yes
LTC5591IUH#TRPBF 5x5 QFN-24 I $9.56 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
DC1710A-B LTC5591 | Dual 1.3GHz to 2.3GHz High Dynamic Range Down Mixer Demo Circuit, IF=190MHz, +/-30MHz BW. $125.00
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Click here to view our complete list of demo boards


  • 3G/4G Wireless Infrastructure Diversity Receivers (LTE, W-CDMA, TD-SCDMA, UMTS, GSM1800)
  • Remote Radio Unit
  • MIMO Multichannel Receivers

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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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