Dual, SiGe, High-Linearity, 1200MHz to 1700MHz Downconversion Mixer with LO Buffer/Switch

Lowest Noise, Highest Linearity, 1200MHz to 1700MHz, Dual SiGe Mixer Features Superior IP3, NF, and 2LO - 2RF Performance


The MAX19993 dual-channel downconverter is designed to provide 6.4dB of conversion gain, +27dBm input IP3, 15.4dBm 1dB input compression point, and a noise figure of 9.8dB for 1200MHz to 1700MHz diversity receiver applications. With an optimized LO frequency range of 1000MHz to 1560MHz, this mixer is ideal for low-side LO injection architectures. High-side LO injection is supported by the MAX19993A, which is pin-pin and functionally compatible with the MAX19993.

In addition to offering excellent linearity and noise performance, the MAX19993 also yields a high level of component integration. This device includes two double-balanced passive mixer cores, two LO buffers, a dual-input LO selectable switch, and a pair of differential IF output amplifiers. Integrated on-chip baluns allow for single-ended RF and LO inputs. The device requires a nominal LO drive of 0dBm and a typical supply current of 337mA at VCC = +5.0V or 275mA at VCC = +3.3V.

The MAX19993 is pin compatible with the MAX9985/MAX19985A/MAX9995/MAX19993A/MAX19994/MAX19994A/
MAX19995/MAX19995A series of 700MHz to 2200MHz mixers and pin similar to the MAX19997A/MAX19999 series of 1850MHz to 4000MHz mixers, making this entire family of downconverters ideal for applications where a common PCB layout is used across multiple frequency bands.

The device is available in a 6mm × 6mm, 36-pin TQFN package with an exposed pad. Electrical performance is guaranteed over the extended temperature range, from TC = -40°C to +85°C.
MAX19993: Typical Application Circuit MAX19993: Typical Application Circuit Enlarge+

Key Features

  • 1200MHz to 1700MHz RF Frequency Range
  • 1000MHz to 1560MHz LO Frequency Range
  • 50MHz to 500MHz IF Frequency Range
  • 6.4dB Typical Conversion Gain
  • 9.8dB Typical Noise Figure
  • +27dBm Typical Input IP3
  • 15.4dBm Typical Input 1dB Compression Point
  • 72dBc Typical 2RF - 2LO Spurious Rejection at PRF = -10dBm
  • Dual Channels Ideal for Diversity Receiver Applications
  • 47dB Typical Channel-to-Channel Isolation
  • Low -6dBm to +3dBm LO Drive
  • Integrated LO Buffer
  • Internal RF and LO Baluns for Single-Ended Inputs
  • Built-In SPDT LO Switch with 57dB LO-to-LO Isolation and 50ns Switching Time
  • Pin Compatible with the MAX9985/MAX19985A/MAX9995/MAX19993A/MAX19994/MAX19994A/MAX19995/MAX19995A Series of 700MHz to 2200MHz Mixers
  • Pin Similar to the MAX19997A/MAX19999 Series of 1850MHz to 4000MHz Mixers
  • Single +5V or +3.3V Supply
  • External Current-Setting Resistors Provide Option for Operating Device in Reduced-Power/Reduced-Performance Mode


  • Fixed Broadband Wireless Access
  • Military Systems
  • Private Mobile Radios
  • WCDMA/LTE Base Stations
  • Wireless Local Loop
Part Number Channels RF Freq.
RF Freq.
LO Freq.
LO Freq.
IF Freq.
IF Freq.
Input IP3
Noise Figure
2RF-2LO/ 2LO-2RF
3.3V Supply Current
5V Supply Current
(mm x mm)
min max min max min max See Notes
MAX19993  2 1200 1700 1000 1560 50 500 6.4 27 9.8 72 3.0 to 5.25 275 337 6.0 x 6.0 $10.05 @1k
See All Downconverter Mixers (35)
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

Quality and Environmental Data

Product Reliability Reports: MAX19993.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

Related Resources