1. Products
  2. RF and Microwave
  3. RF Mixers
  4. Single, Double, and Triple Balanced Mixers
  5. LT5521

Alternative Parts


Features and Benefits

  • Wideband Output Frequency Range to 3.7GHz
  • +24.2dBm IIP3 at 1.95GHz RF Output
  • Low LO Leakage: –42dBm
  • Integrated LO Buffer: Low LO Drive Level
  • Single-Ended LO Drive
  • Wide Single Supply Range: 3.15V to 5.25V
  • Double-Balanced Active Mixer
  • Shutdown Function
  • 16-Lead (4mm × 4mm) QFN Package

Product Details

The LT5521 is a very high linearity mixer optimized for low distortion and low LO leakage applications. The chip includes a high speed LO buffer with single-ended input and a double-balanced active mixer. The LT5521 requires only –5dBm LO input power to achieve excellent distortion and noise performance, while reducing external drive circuit requirements. The LO buffer is internally 50Ω matched for wideband operation.

With a 250MHz input, a 1.7GHz LO and a 1.95GHz output frequency, the mixer has a typical IIP3 of +24.2dBm, –0.5dB conversion gain and a 12.5dB noise figure.

The LT5521 offers exceptional LO-RF isolation, greatly reducing the need for output filtering to meet LO suppression requirements.

The device is designed to work over a supply voltage range from 3.15V to 5.25V.


  • Cellular, W-CDMA, PHS and UMTS Infrastructure
  • Cable Downlink Infrastructure
  • Wireless Infrastructure
  • Fixed Wireless Access Equipment
  • High Linearity Mixer Applications

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

Tools & Simulations

Design Tool


ADIsimRF is an easy-to-use RF signal chain calculator. Cascaded gain, noise, distortion and power consumption can be calculated, plotted and exported for signal chains with up to 50 stages. ADIsimRF also includes an extensive data base of device models for ADI’s RF and mixed signal components.

Product Recommendations

LT5521 Companion Parts

Recommended Suggested Oscillator

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
LT5521EUF#PBF Material Declaration Reliability Data 16-Lead QFN (4mm x 4mm x 0.75mm w/ EP)
LT5521EUF#TRPBF Material Declaration Reliability Data 16-Lead QFN (4mm x 4mm x 0.75mm w/ EP)
Wafer Fabrication Data R409 Reliability Data

Sample & Buy

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Buy Now Pricing

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List Pricing

(*)The 1Ku 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 Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


Lead Times

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Price Table Help


Evaluation Boards

Pricing displayed is based on 1-piece.

Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.