SiGe High-Linearity, 1400MHz to 2200MHz Downconversion Mixer with LO Buffer/Switch

Lowest Noise, Highest Linearity, 1400MHz to 2200MHz SiGe Downconversion Mixer for 2.5G, 3G, and 4G Base Stations

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The MAX9994 high-linearity downconversion mixer provides 8.3dB gain, +26.2dBm IIP3, and 9.7dB NF for 1400MHz to 2200MHz UMTS/WCDMA, DCS, and PCS base-station receiver applications. With a wide LO range of 1400MHz to 2000MHz, the MAX9994 can be used in either high-side or low-side LO injection architectures, depending on the RF band of interest. Higher LO applications are supported by the MAX9996, which is pin-pin and functionally compatible with the MAX9994.

In addition to offering excellent linearity and noise performance, the MAX9994 also yields a high level of component integration. This device includes a double-balanced passive mixer core, an IF amplifier, a dual-input LO selectable switch, and an LO buffer. On-chip baluns are also integrated to allow for single-ended RF and LO inputs. The MAX9994 requires a nominal LO drive of 0dBm, and supply current is guaranteed to be below 235mA.

The MAX9994/MAX9996 are pin compatible with the MAX9984/MAX9986 815MHz to 995MHz mixers, making this entire family of downconverters ideal for applications where a common PC board layout is used for both frequency bands. The MAX9994 is also functionally compatible with the MAX9993.

The MAX9994 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.
MAX9994: Typical Application Circuit MAX9994: Typical Application Circuit Enlarge+

Key Features

  • 1400MHz to 2200MHz RF Frequency Range
  • 1400MHz to 2000MHz LO Frequency Range (MAX9994)
  • 1900MHz to 2400MHz LO Frequency Range (MAX9996)
  • 40MHz to 350MHz IF Frequency Range
  • 8.3dB Conversion Gain
  • +26.2dBm Input IP3
  • +12.6dBm Input 1dB Compression Point
  • 9.7dB Noise Figure
  • 67dBc 2RF - 2LO Spurious Rejection at PRF = -10dBm
  • Integrated LO Buffer
  • Integrated RF and LO Baluns for Single-Ended Inputs
  • Low -3dBm to +3dBm LO Drive
  • Built-In SPDT LO Switch with 45dB LO1 to LO2 Isolation and 50ns Switching Time
  • Pin Compatible with the MAX9984/MAX9986 815MHz to 995MHz Mixers
  • Functionally Compatible with the MAX9993
  • External Current-Setting Resistors Provide Option for Operating Mixer in Reduced Power/Reduced Performance Mode


  • cdmaOne™ and cdma2000® Base Stations
  • DCS1800/PCS1900 EDGE Base Stations
  • Digital and Spread-Spectrum Communication Systems
  • Fixed Broadband Wireless Access
  • Microwave Links
  • Military Systems
  • PHS/PAS Base Stations
  • Predistortion Receivers
  • Private Mobile Radios (PMRs)
  • TD-SCDMA/TD-LTE Base Stations
  • UMTS/LTE Base Stations
  • Wireless Local Loop (WLL)

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
MAX9994 11400220014002000403508.326.29.7674.75 to 5.252065.0 x 5.0
$9.06 @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.

MAX9994EVKIT: Evaluation Kit for the MAX9994
Product Reliability Reports: MAX9994.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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