SiGe, High-Linearity, 2000MHz to 3900MHz Downconversion Mixer with LO Buffer

Lowest Noise, Highest Linearity 2000MHz to 3900MHz SiGe Mixer for WCS, LTE, WiMAX, and MMDS Base Stations, Featuring Superior IP3, NF, and 2 x 2 Performance

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The MAX19996A single, high-linearity downconversion mixer provides 8.7dB conversion gain, +24.5dBm IIP3, and 9.8dB noise figure for 2000MHz to 3900MHz WCS, LTE, WiMAX™, and MMDS wireless infrastructure applications. With an ultra-wide LO frequency range of 2100MHz to 4000MHz, the MAX19996A can be used in either low-side or high-side LO injection architectures for virtually all 2.5GHz and 3.5GHz applications. For a 2.5GHz variant tuned specifically for low-side injection, refer to the MAX19996 data sheet.

In addition to offering excellent linearity and noise performance, the MAX19996A also yields a high level of component integration. This device includes a double-balanced passive mixer core, an IF amplifier, and an LO buffer. On-chip baluns are also integrated to allow for single-ended RF and LO inputs. The MAX19996A requires a nominal LO drive of 0dBm, and supply current is typically 230mA at VCC = 5.0V, or 150mA at VCC = 3.3V.

The MAX19996A is pin compatible with the MAX19996 2000MHz to 3000MHz mixer. The device is also pin similar with the MAX9984/MAX9986/MAX9986A 400MHz to 1000MHz mixers and the MAX9993/MAX9994/MAX9996 1700MHz to 2200MHz mixers, making this entire family of downconverters ideal for applications where a common PCB layout is used for multiple frequency bands.

The MAX19996A is available in a compact 5mm x 5mm, 20-pin thin QFN with an exposed pad. Electrical performance is guaranteed over the extended -40°C to +85°C temperature range.
MAX19996A: Typical Application Circuit MAX19996A: Typical Application Circuit Enlarge+

Key Features

  • 2000MHz to 3900MHz RF Frequency Range
  • 2100MHz to 4000MHz LO Frequency Range
  • 50MHz to 500MHz IF Frequency Range
  • 8.7dB Conversion Gain
  • 9.8dB Noise Figure
  • +24.5dBm Typical Input IP3
  • 11dBm Typical Input 1dB Compression Point
  • 67dBc Typical 2LO-2RF Spurious Rejection at PRF = -10dBm
  • Integrated LO Buffer
  • Integrated RF and LO Baluns for Single-Ended Inputs
  • Low -3dBm to +3dBm LO Drive
  • Pin Compatible with the MAX19996 2000MHz to 3000MHz Mixer
  • Pin Similar with the MAX9993/MAX9994/MAX9996 Series of 1700MHz to 2200MHz Mixers and the MAX9984/MAX9986/MAX9986A Series of 400MHz to 1000MHz Mixers
  • Single 5.0V or 3.3V Supply
  • External Current-Setting Resistors Provide Option for Operating Device in Reduced-Power/Reduced-Performance Mode


  • 2.3GHz WCS Base Stations
  • 2.5GHz WiMAX and LTE Base Stations
  • 2.7GHz MMDS Base Stations
  • 3.5GHz WiMAX and LTE Base Stations
  • Fixed Broadband Wireless Access
  • Military Systems
  • Private Mobile Radios
  • Wireless Local Loop

Technical Documents

Tutorial 5100 General Layout Guidelines for RF and Mixed-Signal PCBs
Product Reliability Reports: MAX19996A.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.

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