Dual, SiGe High-Linearity, 3000MHz to 4000MHz Downconversion Mixer with LO Buffer

Lowest Noise, Highest Linearity 3000MHz to 4000MHz Dual, SiGe Mixer for WiMAX and LTE Base Stations, Featuring Superior IIP3, NF, and 2RF-2LO Performance

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The MAX19999 dual-channel downconverter provides 8.3dB of conversion gain, +24dBm input IP3, +11.4dBm 1dB input compression point, and a noise figure of 10.5dB for 3000MHz to 4000MHz WiMAX™ and LTE diversity receiver applications. With an optimized LO frequency range of 2650MHz to 3700MHz, this mixer is ideal for low-side LO injection architectures.

In addition to offering excellent linearity and noise performance, the MAX19999 also yields a high level of component integration. This device includes two double-balanced passive mixer cores, two LO buffers, and a pair of differential IF output amplifiers. Integrated on-chip baluns allow for single-ended RF and LO inputs.

The MAX19999 requires a nominal LO drive of 0dBm and a typical supply current of 388mA at VCC = +5.0V or 279mA at VCC = +3.3V.

The MAX19999 is pin compatible with the MAX19997A 1800MHz to 2900MHz mixer and pin similar with the MAX19985/MAX19985A and MAX19995/MAX19995A series of 700MHz to 2200MHz mixers, making this entire family of downconverters ideal for applications where a common PCB layout is used across multiple frequency bands.

The MAX19999 is available in a compact 6mm x 6mm, 36-pin thin QFN package with an exposed pad. Electrical performance is guaranteed over the extended temperature range, from TC = -40°C to +85°C.
MAX19999: Typical Application Circuit MAX19999: Typical Application Circuit Enlarge+

Key Features

  • 3000MHz to 4000MHz RF Frequency Range
  • 2650MHz to 3700MHz LO Frequency Range
  • 50MHz to 500MHz IF Frequency Range
  • 8.3dB Conversion Gain
  • +24dBm Input IP3
  • 10.5dB Noise Figure
  • +11.4dBm Input 1dB Compression Point
  • 74dBc Typical 2 x 2 Spurious Rejection at PRF = -10dBm
  • Dual Channels Ideal for Diversity Receiver Applications
  • Integrated LO Buffer
  • Integrated LO and RF Baluns for Single-Ended Inputs
  • Low -3dBm to +3dBm LO Drive
  • Pin Compatible with the MAX19997A 1800MHz to 2900MHz Mixer
  • Pin Similar to the MAX9995/MAX9995A and MAX19995/MAX19995A 1700MHz to 2200MHz Mixers and the MAX9985/MAX9985A and MAX19985/MAX19985A 700MHz to 1000MHz Mixers
  • 39dB Channel-to-Channel Isolation
  • Single +5.0V or +3.3V Supply
  • External Current-Setting Resistors Provide Option for Operating Device in Reduced-Power/Reduced-Performance Mode


  • 3.5GHz WiMAX and LTE Base Stations
  • Fixed Broadband Wireless Access
  • Microwave Links
  • Military Systems
  • Private Mobile Radios
  • Wireless Local Loop

See parametric specs for Downconverter Mixers (27)

Part NumberChannelsRF Freq.
RF Freq.
LO Frequency
LO Frequency
IF Frequency
IF Frequency
Input IP3
Noise Figure
2RF-2LO/ 2LO-2RF
3.3V Supply Current
5V Supply Current
(mm x mm)
minmaxminmaxminmaxSee Notes
MAX19999 23000400026503700505008.32410.5743.0 to 5.252793886.0 x 6.0
$13.24 @1k

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Technical Documents

Tutorial 5100 General Layout Guidelines for RF and Mixed-Signal PCBs
Product Reliability Reports: MAX19999.pdf 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

Quality Management System >
Environmental Management System >


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