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  2. RF and Microwave
  3. I/Q Modulators and Demodulators
  4. I/Q Demodulators
  5. LTC5594


Features and Benefits

  • True Zero IF Demodulation
  • Wideband Input Matched from 500MHz to 9GHz
  • Wide IF Bandwidth: DC to 1GHz (1dB Flatness)
  • 37dB Image Rejection, Adjustable to 60dB
  • High Total OIP3: 37dBm at 5.8GHz
  • 58dBm OIP2 at 5.8GHz, Adjustable to 65dBm
  • Max Power Conversion Gain: 9.2dB at 5.8GHz
  • Single-Ended RF Input with On-Chip Transformer
  • User Adjustable DC Offset Null
  • Serial Interface
  • IF Amplifier Gain Adjustable in Eight Steps
  • IF Amplifier Shutdown/Enable
  • Low Power Shutdown Mode
  • Operating Temperature Range (TC): −40°C to 105°C
  • 32-Lead 5mm × 5mm QFN Package

Product Details

The LTC5594 is a direct conversion quadrature demodulator optimized for high linearity zero-IF and low-IF receiver applications in the 300MHz to 9GHz frequency range. The very wide IF bandwidth of more than 1GHz makes the LTC5594 particularly suited for demodulation of very wideband signals, especially in 5G front-haul/back-haul receiver applications. The outstanding dynamic range of the LTC5594 makes the device suitable for demanding infrastructure direct conversion applications. Proprietary technology inside the LTC5594 provides the capability to optimize OIP2 to 65dBm, and achieve image rejection better than 60dB. The DC offset control function allows nulling of the DC offset at the A/D converter input, thereby optimizing the dynamic range of true zero-IF receivers that use DC-coupled IF signal paths. The wideband RF and LO input ports make it possible to cover all the major wireless infrastructure frequency bands using a single device. The IF outputs of the LTC5594 are designed to interface directly with most common A/D converter input interfaces. The high OIP3 and high conversion gain of the device eliminate the need for additional amplifiers in the IF signal path.


  • 5G Base Station Front-haul/Back-haul Receivers
  • Military and Satellite Receivers
  • Point-to-Point Broadband Radios
  • High Linearity Direct Conversion I/Q SDR
  • Test Instrumentation
  • DPD Receivers

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

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.

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
LTC5594IUH#PBF Material Declaration Reliability Data 32-Lead QFN (5mm x 5mm x 0.75mm w/ EP)
LTC5594IUH#TRPBF Material Declaration Reliability Data 32-Lead QFN (5mm x 5mm x 0.75mm w/ EP)
Wafer Fabrication Data R550 Reliability Data

Sample & Buy

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Evaluation Boards

Pricing displayed is based on 1-piece.

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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.