10MHz to 1050MHz Integrated RF Oscillator with Buffered Outputs

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The MAX2620 combines a low-noise oscillator with two output buffers in a low-cost, plastic surface-mount, ultra-small µMAX® package. This device integrates functions typically achieved with discrete components. The oscillator exhibits low-phase noise when properly mated with an external varactor-tuned resonant tank circuit. Two buffered outputs are provided for driving mixers or prescalers. The buffers provide load isolation to the oscillator and prevent frequency pulling due to load-impedance changes. Power consumption is typically just 27mW in operating mode (VCC = 3.0V), and drops to less than 0.3µW in standby mode. The MAX2620 operates from a single +2.7V to +5.25V supply.
MAX2620: Typical Operating Circuit MAX2620: Typical Operating Circuit Enlarge+

Key Features

  • Low-Phase-Noise Oscillator: -110dBc/Hz (25kHz offset from carrier) Attainable
  • Operates from Single +2.7V to +5.25V Supply
  • Low-Cost Silicon Bipolar Design
  • Two Output Buffers Provide Load Isolation
  • Insensitive to Supply Variations
  • Low, 27mW Power Consumption (VCC = 3.0V)
  • Low-Current Shutdown Mode: 0.1µA (typ)


  • 900MHz Cordless Phones
  • 900MHz ISM-Band Applications
  • Analog Cellular Phones
  • Digital Cellular Phones
  • Land Mobile Radios
  • Narrow-Band PCS (NPCS)

See parametric specs for VCOs (14)

Part NumberLO Driver OutputsPLL Driver OutputsRF Freq.
RF Freq.
(mm x mm)
minmaxminmaxSee Notes
MAX2620 YesYes101050-16-22.5 to 5.2593.0 x 4.9
$4.33 @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.

MAX2620EVKIT: Evaluation Kit for the MAX2620
Product Reliability Reports: MAX2620.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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