LTC5549

PRODUCTION

2GHz to 14GHz Microwave Mixer with Integrated LO Frequency Doubler

Data Sheet Product Selection Table
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Overview

  • Upconversion or Downconversion
  • High IIP3:
    • +28.2dBm at 5.8GHz
    • +22.8dBm at 12GHz
  • 8.0dB Conversion Loss at 5.8GHz
  • +14.3dBm Input P1dB at 5.8GHz
  • Integrated LO Buffer: 0dBm LO Drive
  • Bypassable Integrated LO Frequency Doubler
  • Low LO-RF Leakage: <–30dBm
  • 50Ω Single-Ended RF, LO and IF Ports
  • 3.3V/115mA Supply
  • Fast Turn ON/OFF for TDD Operation
  • 2mm × 3mm, 12-Lead QFN Package

The LTC5549 is a general purpose passive doublebalanced mixer that can be used for upconversion or downconversion. The RF port is designed for the 2GHz to 14GHz band and the IF port is optimized for 500MHz to 6GHz operation. An integrated LO buffer amplifier supports LO frequencies from 1GHz to 12GHz, requiring only 0dBm LO power. The LTC5549 delivers high IIP3 and input P1dB with low power consumption.

An internal LO frequency doubler can be enabled by a CMOS-compatible digital control pin, allowing operation with a lower, one-half LO input frequency. This allows the mixer’s LO port to be used with existing synthesizers, such as the LTC6946 and LTC6948 family.

The LTC5549’s high level of integration minimizes the total solution cost, board space and system level variation with its 2mm × 3mm package size.

Applications

  • Microwave Transceivers
  • Wireless Backhaul
  • Point-to-Point Microwave
  • Phased-Array Antennas
  • C, X and Ku Band RADAR
  • Test Equipment
  • Satellite MODEMs
LTC5549
2GHz to 14GHz Microwave Mixer with Integrated LO Frequency Doubler
Conversion Loss and IIP3 (Low Side LO, IF = 1890MHz) Product Package 1
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Documentation

Data Sheet 1

Reliability Data 2

User Guide 1

Technical Articles 4

Data Sheet

This is the most up-to-date revision of the Data Sheet.

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Digital to Analog Converters (DACs) 1
LTC2000A
PRODUCTION 16-/14-/11-Bit 2.7Gsps DACs
Low-Noise Amplifiers (LNAs) & Power Amplifiers 1
LTC6431-20
RECOMMENDED FOR NEW DESIGNS 20dB Gain Block, 50Ω IF Amplifier
Modulators & Demodulators 2
LTC5585
PRODUCTION Wideband IQ Demodulator with IIP2 and DC Offset Control
LTC5588-1
PRODUCTION 200MHz to 6000MHz Quadrature Modulator with Ultrahigh OIP3
Phase-Locked Loop (PLL) Synthesizers 1
LTC6948
LAST TIME BUY Ultralow Noise 0.37GHz to 6.39GHz Fractional-N Synthesizer with Integrated VCO
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Tools & Simulations

ADIsimRF

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.

Open Tool

S-Parameter 1

Evaluation Kits

eval board
schematic 1
schematic 2
schematic 3
schematic 4
schematic 5
DC2310A

LTC5549 Demo Board | 2GHz to 14GHz Microwave Mixer with Integrated LO Frequency Doubler

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Product Details

Demonstration circuit 2310A is optimized for evaluation of the LTC5549 passive double-balanced mixer with integrated LO frequency doubler. Its RF port is matched to 50Ω from 2GHz to 13.6GHz with 9dB return loss, and the LO port is matched to 50Ω from 1GHz to 12GHz with 10dB return loss. The IF output is matched to 50Ω from 700MHz to 6GHz with 10dB return loss. The LTC5549 can be used for upconverting and downconverting applications.
DC2310A
LTC5549 Demo Board | 2GHz to 14GHz Microwave Mixer with Integrated LO Frequency Doubler
DC2310A Demo Board DC2310A Demo Board DC2310A Demo Board DC2310A Demo Board DC2310A - Schematic

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