High-Linearity, 650MHz to 1000MHz Upconversion/Downconversion Mixer with LO Buffer/Switch

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The MAX2031 high-linearity passive upconverter or downconverter mixer is designed to provide +36dBm IIP3, 7dB NF, and 7dB conversion loss for a 650MHz to 1000MHz RF frequency range to support GSM/cellular base-station transmitter or receiver applications. With a 650MHz to 1250MHz LO frequency range, this particular mixer is ideal for high-side LO injection architectures. For a pin-to-pin-compatible mixer meant for low-side LO injection, refer to the MAX2029.

In addition to offering excellent linearity and noise performance, the MAX2031 also yields a high level of component integration. This device includes a double-balanced passive mixer core, a dual-input LO selectable switch, and an LO buffer. On-chip baluns are also integrated to allow for a single-ended RF input for downconversion (or RF output for upconversion), and single-ended LO inputs. The MAX2031 requires a nominal LO drive of 0dBm, and supply current is guaranteed to be below 100mA.

The MAX2031 is pin compatible with the MAX2039/MAX2041 1700MHz to 2200MHz mixers, making this family of passive upconverters and downconverters ideal for applications where a common PC board layout is used for both frequency bands.

The MAX2031 is available in a compact 20-pin thin QFN package (5mm x 5mm) with an exposed pad. Electrical performance is guaranteed over the extended -40°C to +85°C temperature range.
MAX2031: Typical Application Circuit MAX2031: Typical Application Circuit Enlarge+

Key Features

  • 650MHz to 1000MHz RF Frequency Range
  • 650MHz to 1250MHz LO Frequency Range
  • 570MHz to 900MHz LO Frequency Range (Refer to the MAX2029 Data Sheet)
  • DC to 250MHz IF Frequency Range
  • 7dB Conversion Loss
  • +36dBm Input IP3
  • +27dBm Input 1dB Compression Point
  • 7dB Noise Figure
  • Integrated LO Buffer
  • Integrated RF and LO Baluns
  • Low -3dBm to +3dBm LO Drive
  • Built-In SPDT LO Switch with 49dB LO1 to LO2 Isolation and 50ns Switching Time
  • Pin Compatible with the MAX2039/MAX2041 1700MHz to 2200MHz Mixers
  • External Current-Setting Resistor Provides Option for Operating Mixer in Reduced-Power/Reduced-Performance Mode


  • Communication Systems
  • Digital and Spread-Spectrum
  • GSM 850/GSM 900 2G and 2.5G EDGE Base Stations
  • Integrated Digital Enhanced Network (iDEN®) Base Stations
  • Microwave and Fixed Broadband Wireless Access
  • Predistortion Receivers
  • WCDMA/LTE and cdma2000® Base Stations
  • WiMAX™ Base Stations and Customer Premise Equipment
  • 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
5V Supply Current
(mm x mm)
minmaxminmaxminmaxSee Notes
MAX2031 1815100065012500250-7367724.75 to 5.25855.0 x 5.0
$8.83 @1k

See parametric specs for Upconverter Mixers (12)

Part NumberGain
Input IP3
LO +/-2IF
LO +/-3IF
LO Leakage at RF
Output Noise Floor
5V Supply Current
MAX2031 -7.4366483-25.5-16785

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.

MAX2031EVKIT: Evaluation Kit for the MAX2031

Technical Documents

Tutorial 5100 General Layout Guidelines for RF and Mixed-Signal PCBs
Product Reliability Reports: MAX2031.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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