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MAX9981
825MHz to 915MHz, Dual SiGe High-Linearity Active Mixer

Industry's First Dual SiGe Mixer Reduces Cost, Space, and Component Count for 2.5G and 3G BTS Designs


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 424kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The MAX9981 dual high-linearity mixer integrates a local oscillator (LO) switch, LO buffer, LO splitter, and two active mixers. On-chip baluns allow for single-ended RF and LO inputs. The active mixers eliminate the need for an additional IF amplifier because the mixer provides a typical overall conversion gain of 2.1dB.

The MAX9981 active mixers are optimized to meet the demanding requirements of GSM850, GSM900, and CDMA850 base-station receivers. These mixers provide exceptional linearity with an input IP3 of greater than +27dBm. The integrated LO driver allows for a wide range of LO drive levels from -5dBm to +5dBm. In addition, the built-in high-isolation switch enables rapid LO selection of less than 250ns, as needed for GSM transceiver designs.

The MAX9981 is available in a 36-pin QFN package (6mm x 6mm) with an exposed paddle, and is specified over the -40°C to +85°C extended temperature range.

An evaluation kit is available:  MAX9981EVKIT  

Key Features   Applications/Uses
  • +27.3dBm Input IP3
  • +13.6dBm Input 1dB Compression Point
  • 825MHz to 915MHz RF Frequency Range
  • 70MHz to 170MHz IF Frequency Range
  • 725MHz to 1085MHz LO Frequency Range
  • 2.1dB Conversion Gain
  • 10.8dB Noise Figure
  • 42dB Channel-to-Channel Isolation
  • -5dBm to +5dBm LO Drive
  • +5V Single-Supply Operation
  • Built-In LO Switch with 52dB LO1 to LO2 Isolation
  • ESD Protection
  • Integrated RF and LO Baluns for Single-Ended Inputs

 
  		• Cellular cdmaOne™ and cdma2000® Base Station Receivers
  		• Digital and Spread-Spectrum Communication Systems
  		• GSM 850/GSM 900 2G and 2.5G EDGE Base Station Receivers
  		• Microwave Point-to-Point Links
  		• TDMA and Integrated Digital Enhanced Network (iDEN®) Base-Station Receivers

    Key Specifications:  Downconverter Mixers
    Part Number RF Freq.
    (MHz)    		 RF Freq.
    (MHz)    		 Gain
    (dB)    		 Input IP3
    (dBm)    		 Noise Figure
    (dB)    		 ISUPPLY
    (mA)    		 Footprint
    (mm x mm)    		 Package/Pins Price
    min max See Notes
    MAX9981  825 915 2.1 27.3 10.8 291 6.0 x 6.0
    TQFN/36
    		 $12.25 @1k
    See All Downconverter Mixers (24)

    Diagram
    MAX9981: Pin Configuration
    Pin Configuration

    Application Notes
  		• Application Note 2371: Consider Overall Cascaded Performance When Comparing Integrated RF Frequency Mixers to Passive Mixer Solutions - MAX9981

    Evaluation Kits
  		• MAX9981EVKIT

    Design Guides
  		• Wireless (PDF)

    Reliability Reports
  		• Show FIT data for:
  		• Request Reliability Report for:

    Software/Models
    none

    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


    Devices: 1-6 of 6

    MAX9981 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX9981ETX+D    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX9981ETX+TD    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX9981ETX    
    		Active TQFN;36 pin;37.2 mm²
    Outline Drawing: 21-0141 (PDF)
    Land Pattern: 90-0049 (PDF)
    Use pkgcode/variation: T3666-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX9981ETX-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX9981ETX+  
    		Active TQFN;36 pin;37.2 mm²
    Outline Drawing: 21-0141 (PDF)
    Land Pattern: 90-0049 (PDF)
    Use pkgcode/variation: T3666+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX9981ETX+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet

    More Information
  		• New Product Press Release 2002-11-06 

    Related Products
    MAX9982 825MHz to 915MHz, SiGe High-Linearity Active Mixer

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    •  QuickView   Technical Documents   Ordering Info   More Information  
     Description 
     Key Features 
     Applications/Uses 
     Key Specifications 
     Diagram 

    		 Data Sheet 
     Application Notes 
     Design Guides 
     Engineering Journals 
     Reliability Reports 
     Software/Models 
     Evaluation Kits 

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    Document Ref.: 19-2588; Rev 0; 2002-11-05
    This page last modified: 2009-10-14


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